Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/future/backports/misc.py @ 4:79f47841a781 draft

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
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0
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1 """
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2 Miscellaneous function (re)definitions from the Py3.4+ standard library
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3 for Python 2.6/2.7.
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4
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5 - math.ceil (for Python 2.7)
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6 - collections.OrderedDict (for Python 2.6)
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7 - collections.Counter (for Python 2.6)
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8 - collections.ChainMap (for all versions prior to Python 3.3)
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9 - itertools.count (for Python 2.6, with step parameter)
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10 - subprocess.check_output (for Python 2.6)
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11 - reprlib.recursive_repr (for Python 2.6+)
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12 - functools.cmp_to_key (for Python 2.6)
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13 """
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14
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15 from __future__ import absolute_import
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16
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17 import subprocess
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18 from math import ceil as oldceil
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19
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20 from operator import itemgetter as _itemgetter, eq as _eq
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21 import sys
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22 import heapq as _heapq
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23 from _weakref import proxy as _proxy
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24 from itertools import repeat as _repeat, chain as _chain, starmap as _starmap
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25 from socket import getaddrinfo, SOCK_STREAM, error, socket
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26
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27 from future.utils import iteritems, itervalues, PY2, PY26, PY3
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28
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29 if PY2:
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30 from collections import Mapping, MutableMapping
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31 else:
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32 from collections.abc import Mapping, MutableMapping
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33
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34
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35 def ceil(x):
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36 """
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37 Return the ceiling of x as an int.
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38 This is the smallest integral value >= x.
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39 """
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40 return int(oldceil(x))
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41
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42
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43 ########################################################################
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44 ### reprlib.recursive_repr decorator from Py3.4
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45 ########################################################################
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46
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47 from itertools import islice
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48
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49 if PY3:
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50 try:
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51 from _thread import get_ident
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52 except ImportError:
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53 from _dummy_thread import get_ident
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54 else:
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55 try:
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56 from thread import get_ident
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57 except ImportError:
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58 from dummy_thread import get_ident
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59
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60
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61 def recursive_repr(fillvalue='...'):
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62 'Decorator to make a repr function return fillvalue for a recursive call'
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63
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64 def decorating_function(user_function):
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65 repr_running = set()
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66
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67 def wrapper(self):
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68 key = id(self), get_ident()
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69 if key in repr_running:
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70 return fillvalue
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71 repr_running.add(key)
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72 try:
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73 result = user_function(self)
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74 finally:
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75 repr_running.discard(key)
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76 return result
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77
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78 # Can't use functools.wraps() here because of bootstrap issues
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79 wrapper.__module__ = getattr(user_function, '__module__')
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80 wrapper.__doc__ = getattr(user_function, '__doc__')
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81 wrapper.__name__ = getattr(user_function, '__name__')
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82 wrapper.__annotations__ = getattr(user_function, '__annotations__', {})
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83 return wrapper
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84
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85 return decorating_function
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86
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87
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88 ################################################################################
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89 ### OrderedDict
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90 ################################################################################
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91
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92 class _Link(object):
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93 __slots__ = 'prev', 'next', 'key', '__weakref__'
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94
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95 class OrderedDict(dict):
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96 'Dictionary that remembers insertion order'
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97 # An inherited dict maps keys to values.
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98 # The inherited dict provides __getitem__, __len__, __contains__, and get.
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99 # The remaining methods are order-aware.
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100 # Big-O running times for all methods are the same as regular dictionaries.
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101
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102 # The internal self.__map dict maps keys to links in a doubly linked list.
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103 # The circular doubly linked list starts and ends with a sentinel element.
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104 # The sentinel element never gets deleted (this simplifies the algorithm).
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105 # The sentinel is in self.__hardroot with a weakref proxy in self.__root.
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106 # The prev links are weakref proxies (to prevent circular references).
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107 # Individual links are kept alive by the hard reference in self.__map.
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108 # Those hard references disappear when a key is deleted from an OrderedDict.
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109
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110 def __init__(*args, **kwds):
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111 '''Initialize an ordered dictionary. The signature is the same as
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112 regular dictionaries, but keyword arguments are not recommended because
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113 their insertion order is arbitrary.
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114
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115 '''
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116 if not args:
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117 raise TypeError("descriptor '__init__' of 'OrderedDict' object "
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118 "needs an argument")
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119 self = args[0]
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120 args = args[1:]
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121 if len(args) > 1:
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122 raise TypeError('expected at most 1 arguments, got %d' % len(args))
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123 try:
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124 self.__root
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125 except AttributeError:
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126 self.__hardroot = _Link()
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127 self.__root = root = _proxy(self.__hardroot)
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128 root.prev = root.next = root
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129 self.__map = {}
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130 self.__update(*args, **kwds)
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131
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132 def __setitem__(self, key, value,
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133 dict_setitem=dict.__setitem__, proxy=_proxy, Link=_Link):
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134 'od.__setitem__(i, y) <==> od[i]=y'
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135 # Setting a new item creates a new link at the end of the linked list,
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136 # and the inherited dictionary is updated with the new key/value pair.
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137 if key not in self:
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138 self.__map[key] = link = Link()
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139 root = self.__root
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140 last = root.prev
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141 link.prev, link.next, link.key = last, root, key
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142 last.next = link
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143 root.prev = proxy(link)
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144 dict_setitem(self, key, value)
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145
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146 def __delitem__(self, key, dict_delitem=dict.__delitem__):
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147 'od.__delitem__(y) <==> del od[y]'
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148 # Deleting an existing item uses self.__map to find the link which gets
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149 # removed by updating the links in the predecessor and successor nodes.
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150 dict_delitem(self, key)
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151 link = self.__map.pop(key)
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152 link_prev = link.prev
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153 link_next = link.next
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154 link_prev.next = link_next
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155 link_next.prev = link_prev
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156
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157 def __iter__(self):
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158 'od.__iter__() <==> iter(od)'
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159 # Traverse the linked list in order.
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160 root = self.__root
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161 curr = root.next
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162 while curr is not root:
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163 yield curr.key
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164 curr = curr.next
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165
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166 def __reversed__(self):
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167 'od.__reversed__() <==> reversed(od)'
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168 # Traverse the linked list in reverse order.
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169 root = self.__root
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170 curr = root.prev
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171 while curr is not root:
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172 yield curr.key
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173 curr = curr.prev
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174
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175 def clear(self):
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176 'od.clear() -> None. Remove all items from od.'
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177 root = self.__root
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178 root.prev = root.next = root
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179 self.__map.clear()
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180 dict.clear(self)
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181
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182 def popitem(self, last=True):
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183 '''od.popitem() -> (k, v), return and remove a (key, value) pair.
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184 Pairs are returned in LIFO order if last is true or FIFO order if false.
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185
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186 '''
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187 if not self:
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188 raise KeyError('dictionary is empty')
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189 root = self.__root
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190 if last:
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191 link = root.prev
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192 link_prev = link.prev
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193 link_prev.next = root
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194 root.prev = link_prev
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195 else:
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196 link = root.next
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197 link_next = link.next
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198 root.next = link_next
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199 link_next.prev = root
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200 key = link.key
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201 del self.__map[key]
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202 value = dict.pop(self, key)
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203 return key, value
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204
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205 def move_to_end(self, key, last=True):
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206 '''Move an existing element to the end (or beginning if last==False).
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207
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208 Raises KeyError if the element does not exist.
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209 When last=True, acts like a fast version of self[key]=self.pop(key).
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210
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211 '''
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212 link = self.__map[key]
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213 link_prev = link.prev
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214 link_next = link.next
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215 link_prev.next = link_next
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216 link_next.prev = link_prev
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217 root = self.__root
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218 if last:
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219 last = root.prev
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220 link.prev = last
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221 link.next = root
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222 last.next = root.prev = link
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223 else:
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224 first = root.next
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225 link.prev = root
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226 link.next = first
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227 root.next = first.prev = link
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228
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229 def __sizeof__(self):
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230 sizeof = sys.getsizeof
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231 n = len(self) + 1 # number of links including root
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232 size = sizeof(self.__dict__) # instance dictionary
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233 size += sizeof(self.__map) * 2 # internal dict and inherited dict
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234 size += sizeof(self.__hardroot) * n # link objects
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235 size += sizeof(self.__root) * n # proxy objects
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236 return size
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237
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238 update = __update = MutableMapping.update
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239 keys = MutableMapping.keys
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240 values = MutableMapping.values
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241 items = MutableMapping.items
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242 __ne__ = MutableMapping.__ne__
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243
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244 __marker = object()
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245
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246 def pop(self, key, default=__marker):
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247 '''od.pop(k[,d]) -> v, remove specified key and return the corresponding
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248 value. If key is not found, d is returned if given, otherwise KeyError
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249 is raised.
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250
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251 '''
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252 if key in self:
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253 result = self[key]
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254 del self[key]
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255 return result
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256 if default is self.__marker:
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257 raise KeyError(key)
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258 return default
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259
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260 def setdefault(self, key, default=None):
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261 'od.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in od'
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262 if key in self:
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263 return self[key]
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264 self[key] = default
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265 return default
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266
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267 @recursive_repr()
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268 def __repr__(self):
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269 'od.__repr__() <==> repr(od)'
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270 if not self:
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271 return '%s()' % (self.__class__.__name__,)
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272 return '%s(%r)' % (self.__class__.__name__, list(self.items()))
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273
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274 def __reduce__(self):
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275 'Return state information for pickling'
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276 inst_dict = vars(self).copy()
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277 for k in vars(OrderedDict()):
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278 inst_dict.pop(k, None)
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279 return self.__class__, (), inst_dict or None, None, iter(self.items())
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280
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281 def copy(self):
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282 'od.copy() -> a shallow copy of od'
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283 return self.__class__(self)
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284
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285 @classmethod
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286 def fromkeys(cls, iterable, value=None):
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287 '''OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S.
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288 If not specified, the value defaults to None.
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289
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290 '''
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291 self = cls()
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292 for key in iterable:
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293 self[key] = value
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294 return self
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295
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296 def __eq__(self, other):
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297 '''od.__eq__(y) <==> od==y. Comparison to another OD is order-sensitive
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298 while comparison to a regular mapping is order-insensitive.
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299
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300 '''
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301 if isinstance(other, OrderedDict):
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302 return dict.__eq__(self, other) and all(map(_eq, self, other))
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303 return dict.__eq__(self, other)
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304
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305
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306 # {{{ http://code.activestate.com/recipes/576611/ (r11)
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307
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308 try:
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309 from operator import itemgetter
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310 from heapq import nlargest
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311 except ImportError:
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312 pass
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313
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314 ########################################################################
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315 ### Counter
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316 ########################################################################
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317
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318 def _count_elements(mapping, iterable):
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319 'Tally elements from the iterable.'
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320 mapping_get = mapping.get
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321 for elem in iterable:
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322 mapping[elem] = mapping_get(elem, 0) + 1
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323
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324 class Counter(dict):
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325 '''Dict subclass for counting hashable items. Sometimes called a bag
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326 or multiset. Elements are stored as dictionary keys and their counts
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327 are stored as dictionary values.
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328
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329 >>> c = Counter('abcdeabcdabcaba') # count elements from a string
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330
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331 >>> c.most_common(3) # three most common elements
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332 [('a', 5), ('b', 4), ('c', 3)]
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333 >>> sorted(c) # list all unique elements
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334 ['a', 'b', 'c', 'd', 'e']
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335 >>> ''.join(sorted(c.elements())) # list elements with repetitions
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336 'aaaaabbbbcccdde'
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337 >>> sum(c.values()) # total of all counts
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338 15
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339
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340 >>> c['a'] # count of letter 'a'
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341 5
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342 >>> for elem in 'shazam': # update counts from an iterable
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343 ... c[elem] += 1 # by adding 1 to each element's count
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344 >>> c['a'] # now there are seven 'a'
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345 7
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346 >>> del c['b'] # remove all 'b'
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347 >>> c['b'] # now there are zero 'b'
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348 0
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349
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350 >>> d = Counter('simsalabim') # make another counter
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351 >>> c.update(d) # add in the second counter
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352 >>> c['a'] # now there are nine 'a'
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353 9
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354
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355 >>> c.clear() # empty the counter
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356 >>> c
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357 Counter()
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358
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359 Note: If a count is set to zero or reduced to zero, it will remain
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360 in the counter until the entry is deleted or the counter is cleared:
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361
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362 >>> c = Counter('aaabbc')
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363 >>> c['b'] -= 2 # reduce the count of 'b' by two
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364 >>> c.most_common() # 'b' is still in, but its count is zero
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365 [('a', 3), ('c', 1), ('b', 0)]
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366
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367 '''
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368 # References:
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369 # http://en.wikipedia.org/wiki/Multiset
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370 # http://www.gnu.org/software/smalltalk/manual-base/html_node/Bag.html
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371 # http://www.demo2s.com/Tutorial/Cpp/0380__set-multiset/Catalog0380__set-multiset.htm
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372 # http://code.activestate.com/recipes/259174/
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373 # Knuth, TAOCP Vol. II section 4.6.3
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374
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375 def __init__(*args, **kwds):
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376 '''Create a new, empty Counter object. And if given, count elements
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377 from an input iterable. Or, initialize the count from another mapping
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378 of elements to their counts.
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379
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380 >>> c = Counter() # a new, empty counter
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381 >>> c = Counter('gallahad') # a new counter from an iterable
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382 >>> c = Counter({'a': 4, 'b': 2}) # a new counter from a mapping
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383 >>> c = Counter(a=4, b=2) # a new counter from keyword args
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384
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385 '''
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386 if not args:
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387 raise TypeError("descriptor '__init__' of 'Counter' object "
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388 "needs an argument")
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389 self = args[0]
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390 args = args[1:]
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391 if len(args) > 1:
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392 raise TypeError('expected at most 1 arguments, got %d' % len(args))
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393 super(Counter, self).__init__()
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394 self.update(*args, **kwds)
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395
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396 def __missing__(self, key):
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397 'The count of elements not in the Counter is zero.'
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398 # Needed so that self[missing_item] does not raise KeyError
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399 return 0
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400
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401 def most_common(self, n=None):
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402 '''List the n most common elements and their counts from the most
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403 common to the least. If n is None, then list all element counts.
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404
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405 >>> Counter('abcdeabcdabcaba').most_common(3)
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406 [('a', 5), ('b', 4), ('c', 3)]
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407
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408 '''
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409 # Emulate Bag.sortedByCount from Smalltalk
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410 if n is None:
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411 return sorted(self.items(), key=_itemgetter(1), reverse=True)
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412 return _heapq.nlargest(n, self.items(), key=_itemgetter(1))
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413
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414 def elements(self):
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415 '''Iterator over elements repeating each as many times as its count.
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416
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417 >>> c = Counter('ABCABC')
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418 >>> sorted(c.elements())
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419 ['A', 'A', 'B', 'B', 'C', 'C']
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420
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421 # Knuth's example for prime factors of 1836: 2**2 * 3**3 * 17**1
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422 >>> prime_factors = Counter({2: 2, 3: 3, 17: 1})
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423 >>> product = 1
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424 >>> for factor in prime_factors.elements(): # loop over factors
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425 ... product *= factor # and multiply them
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426 >>> product
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427 1836
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428
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429 Note, if an element's count has been set to zero or is a negative
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430 number, elements() will ignore it.
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431
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432 '''
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433 # Emulate Bag.do from Smalltalk and Multiset.begin from C++.
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434 return _chain.from_iterable(_starmap(_repeat, self.items()))
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435
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436 # Override dict methods where necessary
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437
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438 @classmethod
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439 def fromkeys(cls, iterable, v=None):
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440 # There is no equivalent method for counters because setting v=1
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441 # means that no element can have a count greater than one.
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442 raise NotImplementedError(
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443 'Counter.fromkeys() is undefined. Use Counter(iterable) instead.')
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444
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445 def update(*args, **kwds):
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446 '''Like dict.update() but add counts instead of replacing them.
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447
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448 Source can be an iterable, a dictionary, or another Counter instance.
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449
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450 >>> c = Counter('which')
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451 >>> c.update('witch') # add elements from another iterable
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452 >>> d = Counter('watch')
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453 >>> c.update(d) # add elements from another counter
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454 >>> c['h'] # four 'h' in which, witch, and watch
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455 4
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456
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457 '''
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458 # The regular dict.update() operation makes no sense here because the
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459 # replace behavior results in the some of original untouched counts
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460 # being mixed-in with all of the other counts for a mismash that
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461 # doesn't have a straight-forward interpretation in most counting
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462 # contexts. Instead, we implement straight-addition. Both the inputs
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463 # and outputs are allowed to contain zero and negative counts.
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464
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465 if not args:
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466 raise TypeError("descriptor 'update' of 'Counter' object "
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467 "needs an argument")
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468 self = args[0]
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469 args = args[1:]
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470 if len(args) > 1:
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471 raise TypeError('expected at most 1 arguments, got %d' % len(args))
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472 iterable = args[0] if args else None
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473 if iterable is not None:
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474 if isinstance(iterable, Mapping):
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475 if self:
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476 self_get = self.get
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477 for elem, count in iterable.items():
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478 self[elem] = count + self_get(elem, 0)
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479 else:
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480 super(Counter, self).update(iterable) # fast path when counter is empty
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481 else:
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482 _count_elements(self, iterable)
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483 if kwds:
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484 self.update(kwds)
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485
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486 def subtract(*args, **kwds):
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487 '''Like dict.update() but subtracts counts instead of replacing them.
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488 Counts can be reduced below zero. Both the inputs and outputs are
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489 allowed to contain zero and negative counts.
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490
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491 Source can be an iterable, a dictionary, or another Counter instance.
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492
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493 >>> c = Counter('which')
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494 >>> c.subtract('witch') # subtract elements from another iterable
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495 >>> c.subtract(Counter('watch')) # subtract elements from another counter
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496 >>> c['h'] # 2 in which, minus 1 in witch, minus 1 in watch
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497 0
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498 >>> c['w'] # 1 in which, minus 1 in witch, minus 1 in watch
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499 -1
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500
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501 '''
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502 if not args:
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503 raise TypeError("descriptor 'subtract' of 'Counter' object "
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504 "needs an argument")
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505 self = args[0]
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506 args = args[1:]
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507 if len(args) > 1:
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508 raise TypeError('expected at most 1 arguments, got %d' % len(args))
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509 iterable = args[0] if args else None
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510 if iterable is not None:
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511 self_get = self.get
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512 if isinstance(iterable, Mapping):
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513 for elem, count in iterable.items():
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514 self[elem] = self_get(elem, 0) - count
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515 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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516 for elem in iterable:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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517 self[elem] = self_get(elem, 0) - 1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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518 if kwds:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
519 self.subtract(kwds)
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520
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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521 def copy(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
522 'Return a shallow copy.'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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523 return self.__class__(self)
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parents:
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524
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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525 def __reduce__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
526 return self.__class__, (dict(self),)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
527
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
528 def __delitem__(self, elem):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
529 'Like dict.__delitem__() but does not raise KeyError for missing values.'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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530 if elem in self:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
531 super(Counter, self).__delitem__(elem)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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532
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533 def __repr__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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534 if not self:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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535 return '%s()' % self.__class__.__name__
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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536 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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537 items = ', '.join(map('%r: %r'.__mod__, self.most_common()))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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538 return '%s({%s})' % (self.__class__.__name__, items)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
539 except TypeError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
540 # handle case where values are not orderable
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
541 return '{0}({1!r})'.format(self.__class__.__name__, dict(self))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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542
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
543 # Multiset-style mathematical operations discussed in:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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544 # Knuth TAOCP Volume II section 4.6.3 exercise 19
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
545 # and at http://en.wikipedia.org/wiki/Multiset
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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546 #
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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547 # Outputs guaranteed to only include positive counts.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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548 #
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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549 # To strip negative and zero counts, add-in an empty counter:
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parents:
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550 # c += Counter()
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551
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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552 def __add__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
553 '''Add counts from two counters.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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554
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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555 >>> Counter('abbb') + Counter('bcc')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
556 Counter({'b': 4, 'c': 2, 'a': 1})
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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557
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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558 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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559 if not isinstance(other, Counter):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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560 return NotImplemented
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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561 result = Counter()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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562 for elem, count in self.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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563 newcount = count + other[elem]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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564 if newcount > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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565 result[elem] = newcount
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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566 for elem, count in other.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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567 if elem not in self and count > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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568 result[elem] = count
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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569 return result
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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570
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
571 def __sub__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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572 ''' Subtract count, but keep only results with positive counts.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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573
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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574 >>> Counter('abbbc') - Counter('bccd')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
575 Counter({'b': 2, 'a': 1})
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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576
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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577 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
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578 if not isinstance(other, Counter):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
579 return NotImplemented
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
580 result = Counter()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
581 for elem, count in self.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
582 newcount = count - other[elem]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
583 if newcount > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
584 result[elem] = newcount
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
585 for elem, count in other.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
586 if elem not in self and count < 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
587 result[elem] = 0 - count
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
588 return result
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
589
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
590 def __or__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
591 '''Union is the maximum of value in either of the input counters.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
592
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
593 >>> Counter('abbb') | Counter('bcc')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
594 Counter({'b': 3, 'c': 2, 'a': 1})
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
595
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
596 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
597 if not isinstance(other, Counter):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
598 return NotImplemented
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
599 result = Counter()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
600 for elem, count in self.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
601 other_count = other[elem]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
602 newcount = other_count if count < other_count else count
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
603 if newcount > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
604 result[elem] = newcount
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
605 for elem, count in other.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
606 if elem not in self and count > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
607 result[elem] = count
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
608 return result
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
609
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
610 def __and__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
611 ''' Intersection is the minimum of corresponding counts.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
612
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
613 >>> Counter('abbb') & Counter('bcc')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
614 Counter({'b': 1})
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
615
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
616 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
617 if not isinstance(other, Counter):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
618 return NotImplemented
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
619 result = Counter()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
620 for elem, count in self.items():
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
621 other_count = other[elem]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
622 newcount = count if count < other_count else other_count
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
623 if newcount > 0:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
624 result[elem] = newcount
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
625 return result
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
626
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
627 def __pos__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
628 'Adds an empty counter, effectively stripping negative and zero counts'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
629 return self + Counter()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
630
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
631 def __neg__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
632 '''Subtracts from an empty counter. Strips positive and zero counts,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
633 and flips the sign on negative counts.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
634
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
635 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
636 return Counter() - self
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
637
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
638 def _keep_positive(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
639 '''Internal method to strip elements with a negative or zero count'''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
640 nonpositive = [elem for elem, count in self.items() if not count > 0]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
641 for elem in nonpositive:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
642 del self[elem]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
643 return self
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
644
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
645 def __iadd__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
646 '''Inplace add from another counter, keeping only positive counts.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
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647
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648 >>> c = Counter('abbb')
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649 >>> c += Counter('bcc')
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650 >>> c
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651 Counter({'b': 4, 'c': 2, 'a': 1})
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652
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653 '''
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654 for elem, count in other.items():
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655 self[elem] += count
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656 return self._keep_positive()
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657
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658 def __isub__(self, other):
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diff changeset
659 '''Inplace subtract counter, but keep only results with positive counts.
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660
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661 >>> c = Counter('abbbc')
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662 >>> c -= Counter('bccd')
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663 >>> c
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664 Counter({'b': 2, 'a': 1})
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665
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666 '''
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667 for elem, count in other.items():
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668 self[elem] -= count
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669 return self._keep_positive()
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670
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671 def __ior__(self, other):
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672 '''Inplace union is the maximum of value from either counter.
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673
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674 >>> c = Counter('abbb')
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675 >>> c |= Counter('bcc')
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diff changeset
676 >>> c
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diff changeset
677 Counter({'b': 3, 'c': 2, 'a': 1})
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678
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679 '''
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680 for elem, other_count in other.items():
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diff changeset
681 count = self[elem]
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682 if other_count > count:
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683 self[elem] = other_count
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diff changeset
684 return self._keep_positive()
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685
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686 def __iand__(self, other):
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parents:
diff changeset
687 '''Inplace intersection is the minimum of corresponding counts.
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parents:
diff changeset
688
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parents:
diff changeset
689 >>> c = Counter('abbb')
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parents:
diff changeset
690 >>> c &= Counter('bcc')
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parents:
diff changeset
691 >>> c
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parents:
diff changeset
692 Counter({'b': 1})
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parents:
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693
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694 '''
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parents:
diff changeset
695 for elem, count in self.items():
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parents:
diff changeset
696 other_count = other[elem]
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parents:
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697 if other_count < count:
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diff changeset
698 self[elem] = other_count
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parents:
diff changeset
699 return self._keep_positive()
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parents:
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700
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diff changeset
701
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diff changeset
702 def check_output(*popenargs, **kwargs):
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parents:
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703 """
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parents:
diff changeset
704 For Python 2.6 compatibility: see
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parents:
diff changeset
705 http://stackoverflow.com/questions/4814970/
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parents:
diff changeset
706 """
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parents:
diff changeset
707
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diff changeset
708 if 'stdout' in kwargs:
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diff changeset
709 raise ValueError('stdout argument not allowed, it will be overridden.')
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diff changeset
710 process = subprocess.Popen(stdout=subprocess.PIPE, *popenargs, **kwargs)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
711 output, unused_err = process.communicate()
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parents:
diff changeset
712 retcode = process.poll()
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parents:
diff changeset
713 if retcode:
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parents:
diff changeset
714 cmd = kwargs.get("args")
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parents:
diff changeset
715 if cmd is None:
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parents:
diff changeset
716 cmd = popenargs[0]
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parents:
diff changeset
717 raise subprocess.CalledProcessError(retcode, cmd)
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parents:
diff changeset
718 return output
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parents:
diff changeset
719
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diff changeset
720
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diff changeset
721 def count(start=0, step=1):
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parents:
diff changeset
722 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
723 ``itertools.count`` in Py 2.6 doesn't accept a step
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
724 parameter. This is an enhanced version of ``itertools.count``
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
725 for Py2.6 equivalent to ``itertools.count`` in Python 2.7+.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
726 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
727 while True:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
728 yield start
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
729 start += step
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parents:
diff changeset
730
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
731
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
732 ########################################################################
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
733 ### ChainMap (helper for configparser and string.Template)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
734 ### From the Py3.4 source code. See also:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
735 ### https://github.com/kkxue/Py2ChainMap/blob/master/py2chainmap.py
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parents:
diff changeset
736 ########################################################################
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diff changeset
737
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
738 class ChainMap(MutableMapping):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
739 ''' A ChainMap groups multiple dicts (or other mappings) together
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
740 to create a single, updateable view.
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parents:
diff changeset
741
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
742 The underlying mappings are stored in a list. That list is public and can
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
743 accessed or updated using the *maps* attribute. There is no other state.
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parents:
diff changeset
744
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
745 Lookups search the underlying mappings successively until a key is found.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
746 In contrast, writes, updates, and deletions only operate on the first
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
747 mapping.
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parents:
diff changeset
748
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
749 '''
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parents:
diff changeset
750
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parents:
diff changeset
751 def __init__(self, *maps):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
752 '''Initialize a ChainMap by setting *maps* to the given mappings.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
753 If no mappings are provided, a single empty dictionary is used.
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parents:
diff changeset
754
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
755 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
756 self.maps = list(maps) or [{}] # always at least one map
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diff changeset
757
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
758 def __missing__(self, key):
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parents:
diff changeset
759 raise KeyError(key)
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diff changeset
760
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diff changeset
761 def __getitem__(self, key):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
762 for mapping in self.maps:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
763 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
764 return mapping[key] # can't use 'key in mapping' with defaultdict
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
765 except KeyError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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parents:
diff changeset
766 pass
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
767 return self.__missing__(key) # support subclasses that define __missing__
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
768
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
769 def get(self, key, default=None):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
770 return self[key] if key in self else default
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diff changeset
771
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diff changeset
772 def __len__(self):
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diff changeset
773 return len(set().union(*self.maps)) # reuses stored hash values if possible
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diff changeset
774
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diff changeset
775 def __iter__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
776 return iter(set().union(*self.maps))
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diff changeset
777
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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diff changeset
778 def __contains__(self, key):
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parents:
diff changeset
779 return any(key in m for m in self.maps)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
780
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
781 def __bool__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
782 return any(self.maps)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
783
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
784 # Py2 compatibility:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
785 __nonzero__ = __bool__
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
786
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
787 @recursive_repr()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
788 def __repr__(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
789 return '{0.__class__.__name__}({1})'.format(
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
790 self, ', '.join(map(repr, self.maps)))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
791
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
792 @classmethod
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
793 def fromkeys(cls, iterable, *args):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
794 'Create a ChainMap with a single dict created from the iterable.'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
795 return cls(dict.fromkeys(iterable, *args))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
796
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
797 def copy(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
798 'New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
799 return self.__class__(self.maps[0].copy(), *self.maps[1:])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
800
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
801 __copy__ = copy
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
802
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
803 def new_child(self, m=None): # like Django's Context.push()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
804 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
805 New ChainMap with a new map followed by all previous maps. If no
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
806 map is provided, an empty dict is used.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
807 '''
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
808 if m is None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
809 m = {}
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
810 return self.__class__(m, *self.maps)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
811
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
812 @property
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
813 def parents(self): # like Django's Context.pop()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
814 'New ChainMap from maps[1:].'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
815 return self.__class__(*self.maps[1:])
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
816
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
817 def __setitem__(self, key, value):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
818 self.maps[0][key] = value
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
819
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
820 def __delitem__(self, key):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
821 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
822 del self.maps[0][key]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
823 except KeyError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
824 raise KeyError('Key not found in the first mapping: {0!r}'.format(key))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
825
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
826 def popitem(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
827 'Remove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
828 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
829 return self.maps[0].popitem()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
830 except KeyError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
831 raise KeyError('No keys found in the first mapping.')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
832
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
833 def pop(self, key, *args):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
834 'Remove *key* from maps[0] and return its value. Raise KeyError if *key* not in maps[0].'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
835 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
836 return self.maps[0].pop(key, *args)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
837 except KeyError:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
838 raise KeyError('Key not found in the first mapping: {0!r}'.format(key))
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
839
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
840 def clear(self):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
841 'Clear maps[0], leaving maps[1:] intact.'
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
842 self.maps[0].clear()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
843
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
844
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
845 # Re-use the same sentinel as in the Python stdlib socket module:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
846 from socket import _GLOBAL_DEFAULT_TIMEOUT
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
847 # Was: _GLOBAL_DEFAULT_TIMEOUT = object()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
848
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
849
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
850 def create_connection(address, timeout=_GLOBAL_DEFAULT_TIMEOUT,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
851 source_address=None):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
852 """Backport of 3-argument create_connection() for Py2.6.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
853
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
854 Connect to *address* and return the socket object.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
855
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
856 Convenience function. Connect to *address* (a 2-tuple ``(host,
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
857 port)``) and return the socket object. Passing the optional
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
858 *timeout* parameter will set the timeout on the socket instance
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
859 before attempting to connect. If no *timeout* is supplied, the
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
860 global default timeout setting returned by :func:`getdefaulttimeout`
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
861 is used. If *source_address* is set it must be a tuple of (host, port)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
862 for the socket to bind as a source address before making the connection.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
863 An host of '' or port 0 tells the OS to use the default.
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
864 """
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
865
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
866 host, port = address
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
867 err = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
868 for res in getaddrinfo(host, port, 0, SOCK_STREAM):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
869 af, socktype, proto, canonname, sa = res
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
870 sock = None
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
871 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
872 sock = socket(af, socktype, proto)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
873 if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
874 sock.settimeout(timeout)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
875 if source_address:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
876 sock.bind(source_address)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
877 sock.connect(sa)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
878 return sock
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
879
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
880 except error as _:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
881 err = _
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
882 if sock is not None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
883 sock.close()
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
884
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
885 if err is not None:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
886 raise err
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
887 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
888 raise error("getaddrinfo returns an empty list")
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
889
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
890 # Backport from Py2.7 for Py2.6:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
891 def cmp_to_key(mycmp):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
892 """Convert a cmp= function into a key= function"""
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
893 class K(object):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
894 __slots__ = ['obj']
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
895 def __init__(self, obj, *args):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
896 self.obj = obj
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
897 def __lt__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
898 return mycmp(self.obj, other.obj) < 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
899 def __gt__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
900 return mycmp(self.obj, other.obj) > 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
901 def __eq__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
902 return mycmp(self.obj, other.obj) == 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
903 def __le__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
904 return mycmp(self.obj, other.obj) <= 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
905 def __ge__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
906 return mycmp(self.obj, other.obj) >= 0
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
907 def __ne__(self, other):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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908 return mycmp(self.obj, other.obj) != 0
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909 def __hash__(self):
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910 raise TypeError('hash not implemented')
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911 return K
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912
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913 # Back up our definitions above in case they're useful
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914 _OrderedDict = OrderedDict
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915 _Counter = Counter
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916 _check_output = check_output
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917 _count = count
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918 _ceil = ceil
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919 __count_elements = _count_elements
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920 _recursive_repr = recursive_repr
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921 _ChainMap = ChainMap
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922 _create_connection = create_connection
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923 _cmp_to_key = cmp_to_key
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924
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925 # Overwrite the definitions above with the usual ones
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926 # from the standard library:
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927 if sys.version_info >= (2, 7):
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928 from collections import OrderedDict, Counter
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929 from itertools import count
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930 from functools import cmp_to_key
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931 try:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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932 from subprocess import check_output
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933 except ImportError:
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934 # Not available. This happens with Google App Engine: see issue #231
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935 pass
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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936 from socket import create_connection
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937
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938 if sys.version_info >= (3, 0):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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939 from math import ceil
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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940 from collections import _count_elements
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941
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942 if sys.version_info >= (3, 3):
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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943 from reprlib import recursive_repr
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944 from collections import ChainMap