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annotate planemo/lib/python3.7/site-packages/galaxy/util/odict.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 """
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2 Ordered dictionary implementation with `insert` functionality.
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3
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4 This is only used in one specific place in the codebase:
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5 galaxy.tools.toolbox.panel
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6
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7 Whenever possible the stdlib `collections.OrderedDict` should be used instead of
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8 this custom implementation.
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9 """
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10
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11 from six.moves import UserDict
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12 dict_alias = dict
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13
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14
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15 class odict(UserDict):
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16 """
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17 http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/107747
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18
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19 This dictionary class extends UserDict to record the order in which items are
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20 added. Calling keys(), values(), items(), etc. will return results in this
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21 order.
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22 """
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23
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24 def __init__(self, dict=None):
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25 item = dict
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26 self._keys = []
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27 if isinstance(item, dict_alias):
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28 UserDict.__init__(self, item)
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29 else:
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30 UserDict.__init__(self, None)
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31 if isinstance(item, list):
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32 for (key, value) in item:
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33 self[key] = value
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34
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35 def __delitem__(self, key):
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36 UserDict.__delitem__(self, key)
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37 self._keys.remove(key)
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38
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39 def __setitem__(self, key, item):
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40 UserDict.__setitem__(self, key, item)
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41 if key not in self._keys:
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42 self._keys.append(key)
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43
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44 def clear(self):
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45 UserDict.clear(self)
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46 self._keys = []
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47
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48 def copy(self):
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49 new = odict()
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50 new.update(self)
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51 return new
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52
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53 def items(self):
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54 return zip(self._keys, self.values())
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55
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56 def keys(self):
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57 return self._keys[:]
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58
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59 def popitem(self):
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60 try:
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61 key = self._keys[-1]
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62 except IndexError:
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63 raise KeyError('dictionary is empty')
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64 val = self[key]
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65 del self[key]
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66 return (key, val)
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67
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68 def setdefault(self, key, failobj=None):
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69 if key not in self._keys:
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70 self._keys.append(key)
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71 return UserDict.setdefault(self, key, failobj)
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72
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73 def update(self, dict):
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74 for (key, val) in dict.items():
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75 self.__setitem__(key, val)
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76
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77 def values(self):
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78 return map(self.get, self._keys)
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79
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80 def iterkeys(self):
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81 return iter(self._keys)
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82
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83 def itervalues(self):
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84 for key in self._keys:
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85 yield self.get(key)
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86
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87 def iteritems(self):
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88 for key in self._keys:
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89 yield key, self.get(key)
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90
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91 def __iter__(self):
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92 for key in self._keys:
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93 yield key
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94
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95 def reverse(self):
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96 self._keys.reverse()
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97
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98 def insert(self, index, key, item):
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99 if key not in self._keys:
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100 self._keys.insert(index, key)
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101 UserDict.__setitem__(self, key, item)