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annotate planemo/lib/python3.7/site-packages/networkx/classes/reportviews.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 # Copyright (C) 2004-2019 by
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2 # Aric Hagberg <hagberg@lanl.gov>
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3 # Dan Schult <dschult@colgate.edu>
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4 # Pieter Swart <swart@lanl.gov>
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5 # All rights reserved.
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6 # BSD license.
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7 #
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8 # Authors: Aric Hagberg (hagberg@lanl.gov),
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9 # Pieter Swart (swart@lanl.gov),
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10 # Dan Schult(dschult@colgate.edu)
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11 """
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12 View Classes provide node, edge and degree "views" of a graph.
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13
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14 Views for nodes, edges and degree are provided for all base graph classes.
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15 A view means a read-only object that is quick to create, automatically
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16 updated when the graph changes, and provides basic access like `n in V`,
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17 `for n in V`, `V[n]` and sometimes set operations.
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18
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19 The views are read-only iterable containers that are updated as the
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20 graph is updated. As with dicts, the graph should not be updated
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21 while iterating through the view. Views can be iterated multiple times.
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22
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23 Edge and Node views also allow data attribute lookup.
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24 The resulting attribute dict is writable as `G.edges[3, 4]['color']='red'`
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25 Degree views allow lookup of degree values for single nodes.
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26 Weighted degree is supported with the `weight` argument.
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27
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28 NodeView
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29 ========
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30
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31 `V = G.nodes` (or `V = G.nodes()`) allows `len(V)`, `n in V`, set
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32 operations e.g. "G.nodes & H.nodes", and `dd = G.nodes[n]`, where
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33 `dd` is the node data dict. Iteration is over the nodes by default.
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34
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35 NodeDataView
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36 ============
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37
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38 To iterate over (node, data) pairs, use arguments to `G.nodes()`
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39 to create a DataView e.g. `DV = G.nodes(data='color', default='red')`.
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40 The DataView iterates as `for n, color in DV` and allows
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41 `(n, 'red') in DV`. Using `DV = G.nodes(data=True)`, the DataViews
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42 use the full datadict in writeable form also allowing contain testing as
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43 `(n, {'color': 'red'}) in VD`. DataViews allow set operations when
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44 data attributes are hashable.
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45
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46 DegreeView
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47 ==========
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48
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49 `V = G.degree` allows iteration over (node, degree) pairs as well
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50 as lookup: `deg=V[n]`. There are many flavors of DegreeView
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51 for In/Out/Directed/Multi. For Directed Graphs, `G.degree`
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52 counts both in and out going edges. `G.out_degree` and
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53 `G.in_degree` count only specific directions.
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54 Weighted degree using edge data attributes is provide via
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55 `V = G.degree(weight='attr_name')` where any string with the
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56 attribute name can be used. `weight=None` is the default.
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57 No set operations are implemented for degrees, use NodeView.
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58
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59 The argument `nbunch` restricts iteration to nodes in nbunch.
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60 The DegreeView can still lookup any node even if nbunch is specified.
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61
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62 EdgeView
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63 ========
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64
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65 `V = G.edges` or `V = G.edges()` allows iteration over edges as well as
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66 `e in V`, set operations and edge data lookup `dd = G.edges[2, 3]`.
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67 Iteration is over 2-tuples `(u, v)` for Graph/DiGraph. For multigraphs
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68 edges 3-tuples `(u, v, key)` are the default but 2-tuples can be obtained
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69 via `V = G.edges(keys=False)`.
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70
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71 Set operations for directed graphs treat the edges as a set of 2-tuples.
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72 For undirected graphs, 2-tuples are not a unique representation of edges.
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73 So long as the set being compared to contains unique representations
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74 of its edges, the set operations will act as expected. If the other
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75 set contains both `(0, 1)` and `(1, 0)` however, the result of set
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76 operations may contain both representations of the same edge.
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77
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78 EdgeDataView
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79 ============
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80
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81 Edge data can be reported using an EdgeDataView typically created
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82 by calling an EdgeView: `DV = G.edges(data='weight', default=1)`.
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83 The EdgeDataView allows iteration over edge tuples, membership checking
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84 but no set operations.
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85
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86 Iteration depends on `data` and `default` and for multigraph `keys`
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87 If `data is False` (the default) then iterate over 2-tuples `(u, v)`.
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88 If `data is True` iterate over 3-tuples `(u, v, datadict)`.
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89 Otherwise iterate over `(u, v, datadict.get(data, default))`.
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90 For Multigraphs, if `keys is True`, replace `u, v` with `u, v, key`
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91 to create 3-tuples and 4-tuples.
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92
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93 The argument `nbunch` restricts edges to those incident to nodes in nbunch.
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94 """
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95 from collections.abc import Mapping, Set, Iterable
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96 import networkx as nx
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97
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98 __all__ = ['NodeView', 'NodeDataView',
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99 'EdgeView', 'OutEdgeView', 'InEdgeView',
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100 'EdgeDataView', 'OutEdgeDataView', 'InEdgeDataView',
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101 'MultiEdgeView', 'OutMultiEdgeView', 'InMultiEdgeView',
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102 'MultiEdgeDataView', 'OutMultiEdgeDataView', 'InMultiEdgeDataView',
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103 'DegreeView', 'DiDegreeView', 'InDegreeView', 'OutDegreeView',
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104 'MultiDegreeView', 'DiMultiDegreeView',
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105 'InMultiDegreeView', 'OutMultiDegreeView']
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106
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107
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108 # NodeViews
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109 class NodeView(Mapping, Set):
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110 """A NodeView class to act as G.nodes for a NetworkX Graph
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111
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112 Set operations act on the nodes without considering data.
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113 Iteration is over nodes. Node data can be looked up like a dict.
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114 Use NodeDataView to iterate over node data or to specify a data
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115 attribute for lookup. NodeDataView is created by calling the NodeView.
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116
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117 Parameters
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118 ----------
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119 graph : NetworkX graph-like class
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120
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121 Examples
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122 --------
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123 >>> G = nx.path_graph(3)
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124 >>> NV = G.nodes()
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125 >>> 2 in NV
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126 True
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127 >>> for n in NV: print(n)
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128 0
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129 1
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130 2
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131 >>> assert(NV & {1, 2, 3} == {1, 2})
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132
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133 >>> G.add_node(2, color='blue')
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134 >>> NV[2]
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135 {'color': 'blue'}
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136 >>> G.add_node(8, color='red')
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137 >>> NDV = G.nodes(data=True)
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138 >>> (2, NV[2]) in NDV
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139 True
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140 >>> for n, dd in NDV: print((n, dd.get('color', 'aqua')))
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141 (0, 'aqua')
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142 (1, 'aqua')
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143 (2, 'blue')
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144 (8, 'red')
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145 >>> NDV[2] == NV[2]
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146 True
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147
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148 >>> NVdata = G.nodes(data='color', default='aqua')
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149 >>> (2, NVdata[2]) in NVdata
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150 True
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151 >>> for n, dd in NVdata: print((n, dd))
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152 (0, 'aqua')
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153 (1, 'aqua')
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154 (2, 'blue')
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155 (8, 'red')
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156 >>> NVdata[2] == NV[2] # NVdata gets 'color', NV gets datadict
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157 False
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158 """
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159 __slots__ = '_nodes',
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160
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161 def __getstate__(self):
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162 return {'_nodes': self._nodes}
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163
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164 def __setstate__(self, state):
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165 self._nodes = state['_nodes']
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166
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167 def __init__(self, graph):
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168 self._nodes = graph._node
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169
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170 # Mapping methods
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171 def __len__(self):
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172 return len(self._nodes)
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173
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174 def __iter__(self):
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175 return iter(self._nodes)
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176
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177 def __getitem__(self, n):
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178 return self._nodes[n]
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179
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180 # Set methods
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181 def __contains__(self, n):
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182 return n in self._nodes
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183
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184 @classmethod
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185 def _from_iterable(cls, it):
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186 return set(it)
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187
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188 # DataView method
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189 def __call__(self, data=False, default=None):
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190 if data is False:
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191 return self
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192 return NodeDataView(self._nodes, data, default)
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193
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194 def data(self, data=True, default=None):
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195 if data is False:
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196 return self
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197 return NodeDataView(self._nodes, data, default)
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198
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199 def __str__(self):
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200 return str(list(self))
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201
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202 def __repr__(self):
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203 return '%s(%r)' % (self.__class__.__name__, tuple(self))
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204
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205
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206 class NodeDataView(Set):
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207 """A DataView class for nodes of a NetworkX Graph
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208
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209 The main use for this class is to iterate through node-data pairs.
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210 The data can be the entire data-dictionary for each node, or it
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211 can be a specific attribute (with default) for each node.
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212 Set operations are enabled with NodeDataView, but don't work in
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213 cases where the data is not hashable. Use with caution.
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214 Typically, set operations on nodes use NodeView, not NodeDataView.
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215 That is, they use `G.nodes` instead of `G.nodes(data='foo')`.
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216
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217 Parameters
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218 ==========
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219 graph : NetworkX graph-like class
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220 data : bool or string (default=False)
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221 default : object (default=None)
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222 """
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223 __slots__ = ('_nodes', '_data', '_default')
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224
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225 def __getstate__(self):
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226 return {'_nodes': self._nodes,
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227 '_data': self._data,
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228 '_default': self._default}
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229
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230 def __setstate__(self, state):
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231 self._nodes = state['_nodes']
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232 self._data = state['_data']
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233 self._default = state['_default']
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234
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235 def __init__(self, nodedict, data=False, default=None):
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236 self._nodes = nodedict
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237 self._data = data
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238 self._default = default
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239
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240 @classmethod
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241 def _from_iterable(cls, it):
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242 try:
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243 return set(it)
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244 except TypeError as err:
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245 if "unhashable" in str(err):
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246 msg = " : Could be b/c data=True or your values are unhashable"
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247 raise TypeError(str(err) + msg)
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248 raise
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249
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250 def __len__(self):
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251 return len(self._nodes)
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252
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253 def __iter__(self):
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254 data = self._data
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255 if data is False:
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256 return iter(self._nodes)
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257 if data is True:
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258 return iter(self._nodes.items())
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259 return ((n, dd[data] if data in dd else self._default)
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260 for n, dd in self._nodes.items())
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261
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262 def __contains__(self, n):
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263 try:
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264 node_in = n in self._nodes
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265 except TypeError:
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266 n, d = n
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267 return n in self._nodes and self[n] == d
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268 if node_in is True:
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269 return node_in
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270 try:
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271 n, d = n
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272 except (TypeError, ValueError):
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273 return False
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274 return n in self._nodes and self[n] == d
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275
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276 def __getitem__(self, n):
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277 ddict = self._nodes[n]
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278 data = self._data
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279 if data is False or data is True:
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280 return ddict
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281 return ddict[data] if data in ddict else self._default
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282
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283 def __str__(self):
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284 return str(list(self))
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285
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286 def __repr__(self):
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287 if self._data is False:
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288 return '%s(%r)' % (self.__class__.__name__, tuple(self))
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289 if self._data is True:
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290 return '%s(%r)' % (self.__class__.__name__, dict(self))
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291 return '%s(%r, data=%r)' % \
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292 (self.__class__.__name__, dict(self), self._data)
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293
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294
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295 # DegreeViews
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296 class DiDegreeView(object):
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297 """A View class for degree of nodes in a NetworkX Graph
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298
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299 The functionality is like dict.items() with (node, degree) pairs.
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300 Additional functionality includes read-only lookup of node degree,
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301 and calling with optional features nbunch (for only a subset of nodes)
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302 and weight (use edge weights to compute degree).
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303
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304 Parameters
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305 ==========
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306 graph : NetworkX graph-like class
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307 nbunch : node, container of nodes, or None meaning all nodes (default=None)
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308 weight : bool or string (default=None)
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309
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310 Notes
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311 -----
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312 DegreeView can still lookup any node even if nbunch is specified.
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313
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314 Examples
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315 --------
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316 >>> G = nx.path_graph(3)
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317 >>> DV = G.degree()
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318 >>> assert(DV[2] == 1)
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319 >>> assert(sum(deg for n, deg in DV) == 4)
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320
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321 >>> DVweight = G.degree(weight="span")
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322 >>> G.add_edge(1, 2, span=34)
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323 >>> DVweight[2]
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324 34
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325 >>> DVweight[0] # default edge weight is 1
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326 1
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327 >>> sum(span for n, span in DVweight) # sum weighted degrees
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328 70
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329
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330 >>> DVnbunch = G.degree(nbunch=(1, 2))
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331 >>> assert(len(list(DVnbunch)) == 2) # iteration over nbunch only
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332 """
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333
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334 def __init__(self, G, nbunch=None, weight=None):
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335 self._graph = G
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336 self._succ = G._succ if hasattr(G, "_succ") else G._adj
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337 self._pred = G._pred if hasattr(G, "_pred") else G._adj
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338 self._nodes = self._succ if nbunch is None \
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339 else list(G.nbunch_iter(nbunch))
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340 self._weight = weight
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341
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342 def __call__(self, nbunch=None, weight=None):
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343 if nbunch is None:
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344 if weight == self._weight:
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345 return self
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346 return self.__class__(self._graph, None, weight)
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347 try:
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348 if nbunch in self._nodes:
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349 if weight == self._weight:
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350 return self[nbunch]
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351 return self.__class__(self._graph, None, weight)[nbunch]
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352 except TypeError:
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353 pass
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354 return self.__class__(self._graph, nbunch, weight)
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355
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356 def __getitem__(self, n):
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357 weight = self._weight
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358 succs = self._succ[n]
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359 preds = self._pred[n]
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360 if weight is None:
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361 return len(succs) + len(preds)
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362 return sum(dd.get(weight, 1) for dd in succs.values()) + \
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363 sum(dd.get(weight, 1) for dd in preds.values())
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364
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365 def __iter__(self):
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366 weight = self._weight
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367 if weight is None:
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368 for n in self._nodes:
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369 succs = self._succ[n]
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370 preds = self._pred[n]
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371 yield (n, len(succs) + len(preds))
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372 else:
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373 for n in self._nodes:
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374 succs = self._succ[n]
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375 preds = self._pred[n]
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376 deg = sum(dd.get(weight, 1) for dd in succs.values()) \
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377 + sum(dd.get(weight, 1) for dd in preds.values())
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378 yield (n, deg)
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379
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380 def __len__(self):
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381 return len(self._nodes)
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382
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383 def __str__(self):
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384 return str(list(self))
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385
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386 def __repr__(self):
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387 return '%s(%r)' % (self.__class__.__name__, dict(self))
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388
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389
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390 class DegreeView(DiDegreeView):
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391 """A DegreeView class to act as G.degree for a NetworkX Graph
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392
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393 Typical usage focuses on iteration over `(node, degree)` pairs.
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394 The degree is by default the number of edges incident to the node.
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395 Optional argument `weight` enables weighted degree using the edge
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396 attribute named in the `weight` argument. Reporting and iteration
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397 can also be restricted to a subset of nodes using `nbunch`.
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398
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399 Additional functionality include node lookup so that `G.degree[n]`
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400 reported the (possibly weighted) degree of node `n`. Calling the
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401 view creates a view with different arguments `nbunch` or `weight`.
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402
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403 Parameters
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404 ==========
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405 graph : NetworkX graph-like class
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406 nbunch : node, container of nodes, or None meaning all nodes (default=None)
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407 weight : string or None (default=None)
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408
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409 Notes
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410 -----
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411 DegreeView can still lookup any node even if nbunch is specified.
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412
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413 Examples
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414 --------
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415 >>> G = nx.path_graph(3)
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416 >>> DV = G.degree()
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417 >>> assert(DV[2] == 1)
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418 >>> assert(G.degree[2] == 1)
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419 >>> assert(sum(deg for n, deg in DV) == 4)
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420
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421 >>> DVweight = G.degree(weight="span")
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422 >>> G.add_edge(1, 2, span=34)
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423 >>> DVweight[2]
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424 34
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425 >>> DVweight[0] # default edge weight is 1
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426 1
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427 >>> sum(span for n, span in DVweight) # sum weighted degrees
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428 70
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429
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430 >>> DVnbunch = G.degree(nbunch=(1, 2))
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431 >>> assert(len(list(DVnbunch)) == 2) # iteration over nbunch only
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432 """
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433
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434 def __getitem__(self, n):
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435 weight = self._weight
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436 nbrs = self._succ[n]
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437 if weight is None:
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438 return len(nbrs) + (n in nbrs)
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439 return sum(dd.get(weight, 1) for dd in nbrs.values()) + \
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440 (n in nbrs and nbrs[n].get(weight, 1))
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441
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442 def __iter__(self):
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443 weight = self._weight
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444 if weight is None:
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445 for n in self._nodes:
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446 nbrs = self._succ[n]
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447 yield (n, len(nbrs) + (n in nbrs))
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448 else:
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449 for n in self._nodes:
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450 nbrs = self._succ[n]
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451 deg = sum(dd.get(weight, 1) for dd in nbrs.values()) + \
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452 (n in nbrs and nbrs[n].get(weight, 1))
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453 yield (n, deg)
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454
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455
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456 class OutDegreeView(DiDegreeView):
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457 """A DegreeView class to report out_degree for a DiGraph; See DegreeView"""
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458
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459 def __getitem__(self, n):
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460 weight = self._weight
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461 nbrs = self._succ[n]
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462 if self._weight is None:
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463 return len(nbrs)
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464 return sum(dd.get(self._weight, 1) for dd in nbrs.values())
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465
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466 def __iter__(self):
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467 weight = self._weight
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468 if weight is None:
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469 for n in self._nodes:
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470 succs = self._succ[n]
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471 yield (n, len(succs))
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472 else:
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473 for n in self._nodes:
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474 succs = self._succ[n]
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475 deg = sum(dd.get(weight, 1) for dd in succs.values())
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476 yield (n, deg)
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477
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478
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479 class InDegreeView(DiDegreeView):
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480 """A DegreeView class to report in_degree for a DiGraph; See DegreeView"""
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481
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482 def __getitem__(self, n):
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483 weight = self._weight
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484 nbrs = self._pred[n]
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485 if weight is None:
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486 return len(nbrs)
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487 return sum(dd.get(weight, 1) for dd in nbrs.values())
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488
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489 def __iter__(self):
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490 weight = self._weight
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491 if weight is None:
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492 for n in self._nodes:
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493 preds = self._pred[n]
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494 yield (n, len(preds))
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495 else:
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496 for n in self._nodes:
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497 preds = self._pred[n]
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498 deg = sum(dd.get(weight, 1) for dd in preds.values())
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499 yield (n, deg)
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500
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501
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502 class MultiDegreeView(DiDegreeView):
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503 """A DegreeView class for undirected multigraphs; See DegreeView"""
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504
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505 def __getitem__(self, n):
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506 weight = self._weight
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507 nbrs = self._succ[n]
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508 if weight is None:
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509 return sum(len(keys) for keys in nbrs.values()) + \
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510 (n in nbrs and len(nbrs[n]))
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511 # edge weighted graph - degree is sum of nbr edge weights
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512 deg = sum(d.get(weight, 1) for key_dict in nbrs.values()
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513 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
514 if n in nbrs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
515 deg += sum(d.get(weight, 1) for d in nbrs[n].values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
516 return deg
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
517
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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518 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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519 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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520 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
521 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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522 nbrs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
523 deg = sum(len(keys) for keys in nbrs.values()) + \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
524 (n in nbrs and len(nbrs[n]))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
525 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
526 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
527 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
528 nbrs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
529 deg = sum(d.get(weight, 1) for key_dict in nbrs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
530 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
531 if n in nbrs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
532 deg += sum(d.get(weight, 1) for d in nbrs[n].values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
533 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
534
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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535
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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536 class DiMultiDegreeView(DiDegreeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
537 """A DegreeView class for MultiDiGraph; See DegreeView"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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538
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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539 def __getitem__(self, n):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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540 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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541 succs = self._succ[n]
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542 preds = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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543 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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544 return sum(len(keys) for keys in succs.values()) + \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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545 sum(len(keys) for keys in preds.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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546 # edge weighted graph - degree is sum of nbr edge weights
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
547 deg = sum(d.get(weight, 1) for key_dict in succs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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548 for d in key_dict.values()) + \
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diff changeset
549 sum(d.get(weight, 1) for key_dict in preds.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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550 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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551 return deg
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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552
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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553 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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554 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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555 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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556 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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557 succs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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558 preds = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
559 deg = sum(len(keys) for keys in succs.values()) + \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
560 sum(len(keys) for keys in preds.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
561 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
562 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
563 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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564 succs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
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565 preds = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
566 deg = sum(d.get(weight, 1) for key_dict in succs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
567 for d in key_dict.values()) + \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
568 sum(d.get(weight, 1) for key_dict in preds.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
569 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
570 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
571
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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572
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
573 class InMultiDegreeView(DiDegreeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
574 """A DegreeView class for inward degree of MultiDiGraph; See DegreeView"""
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parents:
diff changeset
575
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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576 def __getitem__(self, n):
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577 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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578 nbrs = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
579 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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580 return sum(len(data) for data in nbrs.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
581 # edge weighted graph - degree is sum of nbr edge weights
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
582 return sum(d.get(weight, 1) for key_dict in nbrs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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583 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
584
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diff changeset
585 def __iter__(self):
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586 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
587 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
588 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
589 nbrs = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
590 deg = sum(len(data) for data in nbrs.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
591 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
592 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
593 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
594 nbrs = self._pred[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
595 deg = sum(d.get(weight, 1) for key_dict in nbrs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
596 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
597 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
598
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
599
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
600 class OutMultiDegreeView(DiDegreeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
601 """A DegreeView class for outward degree of MultiDiGraph; See DegreeView"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
602
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
603 def __getitem__(self, n):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
604 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
605 nbrs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
606 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
607 return sum(len(data) for data in nbrs.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
608 # edge weighted graph - degree is sum of nbr edge weights
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
609 return sum(d.get(weight, 1) for key_dict in nbrs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
610 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
611
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
612 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
613 weight = self._weight
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
614 if weight is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
615 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
616 nbrs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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617 deg = sum(len(data) for data in nbrs.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
618 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
619 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
620 for n in self._nodes:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
621 nbrs = self._succ[n]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
622 deg = sum(d.get(weight, 1) for key_dict in nbrs.values()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
623 for d in key_dict.values())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
624 yield (n, deg)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
625
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
626
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
627 # EdgeDataViews
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
628 class OutEdgeDataView(object):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
629 """EdgeDataView for outward edges of DiGraph; See EdgeDataView"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
630 __slots__ = ('_viewer', '_nbunch', '_data', '_default',
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
631 '_adjdict', '_nodes_nbrs', '_report')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
632
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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633 def __getstate__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
634 return {'viewer': self._viewer,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
635 'nbunch': self._nbunch,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
636 'data': self._data,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
637 'default': self._default}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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638
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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639 def __setstate__(self, state):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
640 self.__init__(**state)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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641
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642 def __init__(self, viewer, nbunch=None, data=False, default=None):
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643 self._viewer = viewer
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644 adjdict = self._adjdict = viewer._adjdict
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645 if nbunch is None:
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646 self._nodes_nbrs = adjdict.items
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647 else:
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648 nbunch = list(viewer._graph.nbunch_iter(nbunch))
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649 self._nodes_nbrs = lambda: [(n, adjdict[n]) for n in nbunch]
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650 self._nbunch = nbunch
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651 self._data = data
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652 self._default = default
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653 # Set _report based on data and default
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654 if data is True:
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655 self._report = lambda n, nbr, dd: (n, nbr, dd)
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656 elif data is False:
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657 self._report = lambda n, nbr, dd: (n, nbr)
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658 else: # data is attribute name
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659 self._report = lambda n, nbr, dd: \
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660 (n, nbr, dd[data]) if data in dd else (n, nbr, default)
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661
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662 def __len__(self):
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663 return sum(len(nbrs) for n, nbrs in self._nodes_nbrs())
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664
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665 def __iter__(self):
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666 return (self._report(n, nbr, dd) for n, nbrs in self._nodes_nbrs()
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667 for nbr, dd in nbrs.items())
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668
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669 def __contains__(self, e):
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670 try:
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671 u, v = e[:2]
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672 ddict = self._adjdict[u][v]
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673 except KeyError:
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674 return False
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675 return e == self._report(u, v, ddict)
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676
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677 def __str__(self):
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678 return str(list(self))
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679
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680 def __repr__(self):
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681 return '%s(%r)' % (self.__class__.__name__, list(self))
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682
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683
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684 class EdgeDataView(OutEdgeDataView):
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diff changeset
685 """A EdgeDataView class for edges of Graph
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diff changeset
686
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687 This view is primarily used to iterate over the edges reporting
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688 edges as node-tuples with edge data optionally reported. The
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689 argument `nbunch` allows restriction to edges incident to nodes
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690 in that container/singleton. The default (nbunch=None)
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691 reports all edges. The arguments `data` and `default` control
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692 what edge data is reported. The default `data is False` reports
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diff changeset
693 only node-tuples for each edge. If `data is True` the entire edge
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694 data dict is returned. Otherwise `data` is assumed to hold the name
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695 of the edge attribute to report with default `default` if that
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696 edge attribute is not present.
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697
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698 Parameters
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699 ----------
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700 nbunch : container of nodes, node or None (default None)
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701 data : False, True or string (default False)
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702 default : default value (default None)
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703
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704 Examples
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705 --------
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706 >>> G = nx.path_graph(3)
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707 >>> G.add_edge(1, 2, foo='bar')
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708 >>> list(G.edges(data='foo', default='biz'))
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parents:
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709 [(0, 1, 'biz'), (1, 2, 'bar')]
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parents:
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710 >>> assert((0, 1, 'biz') in G.edges(data='foo', default='biz'))
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711 """
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712 __slots__ = ()
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diff changeset
713
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714 def __len__(self):
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diff changeset
715 return sum(1 for e in self)
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716
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717 def __iter__(self):
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718 seen = {}
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719 for n, nbrs in self._nodes_nbrs():
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diff changeset
720 for nbr, dd in nbrs.items():
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721 if nbr not in seen:
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diff changeset
722 yield self._report(n, nbr, dd)
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parents:
diff changeset
723 seen[n] = 1
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diff changeset
724 del seen
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diff changeset
725
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diff changeset
726 def __contains__(self, e):
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parents:
diff changeset
727 try:
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diff changeset
728 u, v = e[:2]
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diff changeset
729 ddict = self._adjdict[u][v]
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parents:
diff changeset
730 except KeyError:
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parents:
diff changeset
731 try:
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guerler
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diff changeset
732 ddict = self._adjdict[v][u]
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parents:
diff changeset
733 except KeyError:
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parents:
diff changeset
734 return False
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guerler
parents:
diff changeset
735 return e == self._report(u, v, ddict)
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736
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737
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parents:
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738 class InEdgeDataView(OutEdgeDataView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
739 """An EdgeDataView class for outward edges of DiGraph; See EdgeDataView"""
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740 __slots__ = ()
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741
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742 def __iter__(self):
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743 return (self._report(nbr, n, dd) for n, nbrs in self._nodes_nbrs()
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guerler
parents:
diff changeset
744 for nbr, dd in nbrs.items())
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745
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746 def __contains__(self, e):
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747 try:
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diff changeset
748 u, v = e[:2]
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749 ddict = self._adjdict[v][u]
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750 except KeyError:
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751 return False
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752 return e == self._report(u, v, ddict)
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753
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754
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755 class OutMultiEdgeDataView(OutEdgeDataView):
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parents:
diff changeset
756 """An EdgeDataView for outward edges of MultiDiGraph; See EdgeDataView"""
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parents:
diff changeset
757 __slots__ = ('keys',)
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diff changeset
758
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759 def __getstate__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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760 return {'viewer': self._viewer,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
761 'nbunch': self._nbunch,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
762 'keys': self.keys,
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parents:
diff changeset
763 'data': self._data,
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parents:
diff changeset
764 'default': self._default}
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parents:
diff changeset
765
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parents:
diff changeset
766 def __setstate__(self, state):
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parents:
diff changeset
767 self.__init__(**state)
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parents:
diff changeset
768
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guerler
parents:
diff changeset
769 def __init__(self, viewer, nbunch=None,
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guerler
parents:
diff changeset
770 data=False, keys=False, default=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
771 self._viewer = viewer
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
772 adjdict = self._adjdict = viewer._adjdict
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
773 self.keys = keys
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
774 if nbunch is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
775 self._nodes_nbrs = adjdict.items
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
776 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
777 nbunch = list(viewer._graph.nbunch_iter(nbunch))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
778 self._nodes_nbrs = lambda: [(n, adjdict[n]) for n in nbunch]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
779 self._nbunch = nbunch
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
780 self._data = data
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
781 self._default = default
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
782 # Set _report based on data and default
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
783 if data is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
784 if keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
785 self._report = lambda n, nbr, k, dd: (n, nbr, k, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
786 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
787 self._report = lambda n, nbr, k, dd: (n, nbr, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
788 elif data is False:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
789 if keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
790 self._report = lambda n, nbr, k, dd: (n, nbr, k)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
791 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
792 self._report = lambda n, nbr, k, dd: (n, nbr)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
793 else: # data is attribute name
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
794 if keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
795 self._report = lambda n, nbr, k, dd: (n, nbr, k, dd[data]) \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
796 if data in dd else (n, nbr, k, default)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
797 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
798 self._report = lambda n, nbr, k, dd: (n, nbr, dd[data]) \
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
799 if data in dd else (n, nbr, default)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
800
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
801 def __len__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
802 return sum(1 for e in self)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
803
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
804 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
805 return (self._report(n, nbr, k, dd) for n, nbrs in self._nodes_nbrs()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
806 for nbr, kd in nbrs.items() for k, dd in kd.items())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
807
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
808 def __contains__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
809 u, v = e[:2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
810 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
811 kdict = self._adjdict[u][v]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
812 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
813 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
814 if self.keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
815 k = e[2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
816 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
817 dd = kdict[k]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
818 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
819 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
820 return e == self._report(u, v, k, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
821 for k, dd in kdict.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
822 if e == self._report(u, v, k, dd):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
823 return True
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
824 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
825
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
826
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
827 class MultiEdgeDataView(OutMultiEdgeDataView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
828 """An EdgeDataView class for edges of MultiGraph; See EdgeDataView"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
829 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
830
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
831 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
832 seen = {}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
833 for n, nbrs in self._nodes_nbrs():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
834 for nbr, kd in nbrs.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
835 if nbr not in seen:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
836 for k, dd in kd.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
837 yield self._report(n, nbr, k, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
838 seen[n] = 1
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
839 del seen
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
840
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
841 def __contains__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
842 u, v = e[:2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
843 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
844 kdict = self._adjdict[u][v]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
845 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
846 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
847 kdict = self._adjdict[v][u]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
848 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
849 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
850 if self.keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
851 k = e[2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
852 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
853 dd = kdict[k]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
854 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
855 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
856 return e == self._report(u, v, k, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
857 for k, dd in kdict.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
858 if e == self._report(u, v, k, dd):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
859 return True
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
860 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
861
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
862
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
863 class InMultiEdgeDataView(OutMultiEdgeDataView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
864 """An EdgeDataView for inward edges of MultiDiGraph; See EdgeDataView"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
865 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
866
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
867 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
868 return (self._report(nbr, n, k, dd) for n, nbrs in self._nodes_nbrs()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
869 for nbr, kd in nbrs.items() for k, dd in kd.items())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
870
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
871 def __contains__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
872 u, v = e[:2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
873 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
874 kdict = self._adjdict[v][u]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
875 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
876 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
877 if self.keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
878 k = e[2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
879 dd = kdict[k]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
880 return e == self._report(u, v, k, dd)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
881 for k, dd in kdict.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
882 if e == self._report(u, v, k, dd):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
883 return True
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
884 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
885
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
886
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
887 # EdgeViews have set operations and no data reported
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
888 class OutEdgeView(Set, Mapping):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
889 """A EdgeView class for outward edges of a DiGraph"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
890 __slots__ = ('_adjdict', '_graph', '_nodes_nbrs')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
891
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
892 def __getstate__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
893 return {'_graph': self._graph}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
894
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
895 def __setstate__(self, state):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
896 self._graph = G = state['_graph']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
897 self._adjdict = G._succ if hasattr(G, "succ") else G._adj
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
898 self._nodes_nbrs = self._adjdict.items
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899
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900 @classmethod
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901 def _from_iterable(cls, it):
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902 return set(it)
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903
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904 dataview = OutEdgeDataView
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905
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906 def __init__(self, G):
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907 self._graph = G
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908 self._adjdict = G._succ if hasattr(G, "succ") else G._adj
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909 self._nodes_nbrs = self._adjdict.items
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910
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911 # Set methods
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912 def __len__(self):
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913 return sum(len(nbrs) for n, nbrs in self._nodes_nbrs())
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914
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915 def __iter__(self):
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916 for n, nbrs in self._nodes_nbrs():
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917 for nbr in nbrs:
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918 yield (n, nbr)
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919
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920 def __contains__(self, e):
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921 try:
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922 u, v = e
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923 return v in self._adjdict[u]
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924 except KeyError:
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925 return False
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926
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927 # Mapping Methods
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928 def __getitem__(self, e):
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929 u, v = e
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930 return self._adjdict[u][v]
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931
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932 # EdgeDataView methods
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933 def __call__(self, nbunch=None, data=False, default=None):
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934 if nbunch is None and data is False:
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935 return self
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936 return self.dataview(self, nbunch, data, default)
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937
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938 def data(self, data=True, default=None, nbunch=None):
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939 if nbunch is None and data is False:
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940 return self
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941 return self.dataview(self, nbunch, data, default)
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942
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943 # String Methods
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944 def __str__(self):
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945 return str(list(self))
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946
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947 def __repr__(self):
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948 return "{0.__class__.__name__}({1!r})".format(self, list(self))
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949
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950
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951 class EdgeView(OutEdgeView):
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952 """A EdgeView class for edges of a Graph
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953
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954 This densely packed View allows iteration over edges, data lookup
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955 like a dict and set operations on edges represented by node-tuples.
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956 In addition, edge data can be controlled by calling this object
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957 possibly creating an EdgeDataView. Typically edges are iterated over
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958 and reported as `(u, v)` node tuples or `(u, v, key)` node/key tuples
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959 for multigraphs. Those edge representations can also be using to
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960 lookup the data dict for any edge. Set operations also are available
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961 where those tuples are the elements of the set.
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962 Calling this object with optional arguments `data`, `default` and `keys`
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963 controls the form of the tuple (see EdgeDataView). Optional argument
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964 `nbunch` allows restriction to edges only involving certain nodes.
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965
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966 If `data is False` (the default) then iterate over 2-tuples `(u, v)`.
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967 If `data is True` iterate over 3-tuples `(u, v, datadict)`.
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968 Otherwise iterate over `(u, v, datadict.get(data, default))`.
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969 For Multigraphs, if `keys is True`, replace `u, v` with `u, v, key` above.
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970
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971 Parameters
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972 ==========
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973 graph : NetworkX graph-like class
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974 nbunch : (default= all nodes in graph) only report edges with these nodes
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975 keys : (only for MultiGraph. default=False) report edge key in tuple
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976 data : bool or string (default=False) see above
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977 default : object (default=None)
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978
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979 Examples
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980 ========
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981 >>> G = nx.path_graph(4)
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982 >>> EV = G.edges()
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983 >>> (2, 3) in EV
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984 True
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985 >>> for u, v in EV: print((u, v))
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986 (0, 1)
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987 (1, 2)
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988 (2, 3)
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989 >>> assert(EV & {(1, 2), (3, 4)} == {(1, 2)})
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990
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991 >>> EVdata = G.edges(data='color', default='aqua')
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992 >>> G.add_edge(2, 3, color='blue')
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993 >>> assert((2, 3, 'blue') in EVdata)
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994 >>> for u, v, c in EVdata: print("({}, {}) has color: {}".format(u, v, c))
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995 (0, 1) has color: aqua
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996 (1, 2) has color: aqua
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997 (2, 3) has color: blue
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998
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999 >>> EVnbunch = G.edges(nbunch=2)
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1000 >>> assert((2, 3) in EVnbunch)
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1001 >>> assert((0, 1) in EVnbunch) # nbunch is ignored in __contains__
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1002 >>> for u, v in EVnbunch: assert(u == 2 or v == 2)
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1003
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1004 >>> MG = nx.path_graph(4, create_using=nx.MultiGraph)
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1005 >>> EVmulti = MG.edges(keys=True)
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1006 >>> (2, 3, 0) in EVmulti
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1007 True
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1008 >>> (2, 3) in EVmulti # 2-tuples work even when keys is True
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1009 True
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1010 >>> key = MG.add_edge(2, 3)
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1011 >>> for u, v, k in EVmulti: print((u, v, k))
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1012 (0, 1, 0)
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1013 (1, 2, 0)
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1014 (2, 3, 0)
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1015 (2, 3, 1)
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1016 """
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1017 __slots__ = ()
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1018
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1019 dataview = EdgeDataView
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1020
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1021 def __len__(self):
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1022 num_nbrs = (len(nbrs) + (n in nbrs) for n, nbrs in self._nodes_nbrs())
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1023 return sum(num_nbrs) // 2
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diff changeset
1024
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1025 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1026 seen = {}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1027 for n, nbrs in self._nodes_nbrs():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1028 for nbr in list(nbrs):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1029 if nbr not in seen:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1030 yield (n, nbr)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1031 seen[n] = 1
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1032 del seen
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1033
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1034 def __contains__(self, e):
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guerler
parents:
diff changeset
1035 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1036 u, v = e[:2]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1037 return v in self._adjdict[u] or u in self._adjdict[v]
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guerler
parents:
diff changeset
1038 except (KeyError, ValueError):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1039 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1040
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1041
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1042 class InEdgeView(OutEdgeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1043 """A EdgeView class for inward edges of a DiGraph"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1044 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1045
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1046 def __setstate__(self, state):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1047 self._graph = G = state['_graph']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1048 self._adjdict = G._pred if hasattr(G, "pred") else G._adj
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1049 self._nodes_nbrs = self._adjdict.items
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guerler
parents:
diff changeset
1050
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1051 dataview = InEdgeDataView
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guerler
parents:
diff changeset
1052
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1053 def __init__(self, G):
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guerler
parents:
diff changeset
1054 self._graph = G
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guerler
parents:
diff changeset
1055 self._adjdict = G._pred if hasattr(G, "pred") else G._adj
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guerler
parents:
diff changeset
1056 self._nodes_nbrs = self._adjdict.items
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1057
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1058 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1059 for n, nbrs in self._nodes_nbrs():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1060 for nbr in nbrs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1061 yield (nbr, n)
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guerler
parents:
diff changeset
1062
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1063 def __contains__(self, e):
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guerler
parents:
diff changeset
1064 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1065 u, v = e
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1066 return u in self._adjdict[v]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1067 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1068 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1069
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1070 def __getitem__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1071 u, v = e
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1072 return self._adjdict[v][u]
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guerler
parents:
diff changeset
1073
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1074
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1075 class OutMultiEdgeView(OutEdgeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1076 """A EdgeView class for outward edges of a MultiDiGraph"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1077 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1078
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1079 dataview = OutMultiEdgeDataView
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guerler
parents:
diff changeset
1080
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1081 def __len__(self):
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guerler
parents:
diff changeset
1082 return sum(len(kdict) for n, nbrs in self._nodes_nbrs()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1083 for nbr, kdict in nbrs.items())
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guerler
parents:
diff changeset
1084
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guerler
parents:
diff changeset
1085 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1086 for n, nbrs in self._nodes_nbrs():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1087 for nbr, kdict in nbrs.items():
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guerler
parents:
diff changeset
1088 for key in kdict:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1089 yield (n, nbr, key)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1090
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1091 def __contains__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1092 N = len(e)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1093 if N == 3:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1094 u, v, k = e
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1095 elif N == 2:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1096 u, v = e
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1097 k = 0
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1098 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1099 raise ValueError("MultiEdge must have length 2 or 3")
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1100 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1101 return k in self._adjdict[u][v]
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guerler
parents:
diff changeset
1102 except KeyError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1103 return False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1104
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parents:
diff changeset
1105 def __getitem__(self, e):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1106 u, v, k = e
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1107 return self._adjdict[u][v][k]
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guerler
parents:
diff changeset
1108
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1109 def __call__(self, nbunch=None, data=False, keys=False, default=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1110 if nbunch is None and data is False and keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1111 return self
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1112 return self.dataview(self, nbunch, data, keys, default)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1113
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1114 def data(self, data=True, keys=False, default=None, nbunch=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1115 if nbunch is None and data is False and keys is True:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1116 return self
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1117 return self.dataview(self, nbunch, data, keys, default)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1118
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1119
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1120 class MultiEdgeView(OutMultiEdgeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1121 """A EdgeView class for edges of a MultiGraph"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1122 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1123
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1124 dataview = MultiEdgeDataView
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guerler
parents:
diff changeset
1125
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1126 def __len__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1127 return sum(1 for e in self)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1128
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1129 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1130 seen = {}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1131 for n, nbrs in self._nodes_nbrs():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1132 for nbr, kd in nbrs.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1133 if nbr not in seen:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1134 for k, dd in kd.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1135 yield (n, nbr, k)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1136 seen[n] = 1
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1137 del seen
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1138
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1139
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1140 class InMultiEdgeView(OutMultiEdgeView):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1141 """A EdgeView class for inward edges of a MultiDiGraph"""
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1142 __slots__ = ()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1143
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1144 def __setstate__(self, state):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1145 self._graph = G = state['_graph']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1146 self._adjdict = G._pred if hasattr(G, "pred") else G._adj
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1147 self._nodes_nbrs = self._adjdict.items
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1148
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1149 dataview = InMultiEdgeDataView
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1150
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1151 def __init__(self, G):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1152 self._graph = G
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1153 self._adjdict = G._pred if hasattr(G, "pred") else G._adj
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guerler
parents:
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1154 self._nodes_nbrs = self._adjdict.items
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guerler
parents:
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1155
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guerler
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1156 def __iter__(self):
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guerler
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1157 for n, nbrs in self._nodes_nbrs():
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guerler
parents:
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1158 for nbr, kdict in nbrs.items():
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guerler
parents:
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1159 for key in kdict:
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guerler
parents:
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1160 yield (nbr, n, key)
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guerler
parents:
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1161
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guerler
parents:
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1162 def __contains__(self, e):
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guerler
parents:
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1163 N = len(e)
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guerler
parents:
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1164 if N == 3:
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guerler
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1165 u, v, k = e
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guerler
parents:
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1166 elif N == 2:
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guerler
parents:
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1167 u, v = e
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guerler
parents:
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1168 k = 0
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guerler
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1169 else:
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guerler
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1170 raise ValueError("MultiEdge must have length 2 or 3")
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guerler
parents:
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1171 try:
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guerler
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1172 return k in self._adjdict[v][u]
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guerler
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1173 except KeyError:
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guerler
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1174 return False
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1175
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1176 def __getitem__(self, e):
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guerler
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1177 u, v, k = e
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guerler
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1178 return self._adjdict[v][u][k]