Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/pip/_internal/utils/models.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 """Utilities for defining models
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2 """
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3
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4 import operator
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5
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6
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7 class KeyBasedCompareMixin(object):
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8 """Provides comparison capabilities that is based on a key
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9 """
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10
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11 def __init__(self, key, defining_class):
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12 self._compare_key = key
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13 self._defining_class = defining_class
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14
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15 def __hash__(self):
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16 return hash(self._compare_key)
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17
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18 def __lt__(self, other):
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19 return self._compare(other, operator.__lt__)
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20
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21 def __le__(self, other):
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22 return self._compare(other, operator.__le__)
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23
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24 def __gt__(self, other):
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25 return self._compare(other, operator.__gt__)
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27 def __ge__(self, other):
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28 return self._compare(other, operator.__ge__)
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29
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30 def __eq__(self, other):
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31 return self._compare(other, operator.__eq__)
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32
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33 def __ne__(self, other):
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34 return self._compare(other, operator.__ne__)
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35
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36 def _compare(self, other, method):
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37 if not isinstance(other, self._defining_class):
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38 return NotImplemented
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39
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40 return method(self._compare_key, other._compare_key)