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annotate roundup/anypy/cmp_.py @ 6330:fbce23af2120

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Test case for backend not defined; remove unreachable code Verify that error is raised in configuration.py if backend is not defined in config.ini. Remove unreachable code from instance.py that detects that backend is not defined. It hasn't been reachable since version 1.6.1 because the configuration.py module made the backend option mandatory. Hence configuration.py raises the error and never passes control back to the unreachable code.
author John Rouillard <rouilj@ieee.org>
date Tue, 02 Mar 2021 00:08:51 -0500
parents 142553f58694
children 706f3be6ffbb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 try:
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2 None < 0
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3
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4 def NoneAndDictComparable(v):
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5 return v
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6 except TypeError:
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7 # comparator to allow comparisons against None and dict
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8 # comparisons (these were allowed in Python 2, but aren't allowed
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9 # in Python 3 any more)
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10 class NoneAndDictComparable(object):
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11 def __init__(self, value):
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12 self.value = value
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13
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14 def __cmp__(self, other):
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15 if not isinstance(other, self.__class__):
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16 raise TypeError('not comparable')
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17
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18 if self.value == other.value:
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19 return 0
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20
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21 elif self.value is None:
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22 return -1
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23
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24 elif other.value is None:
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25 return 1
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26
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27 elif type(self.value) == tuple and type(other.value) == tuple:
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28 for lhs, rhs in zip(self.value, other.value):
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29 lhsCmp = NoneAndDictComparable(lhs)
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30 rhsCmp = NoneAndDictComparable(rhs)
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31 result = lhsCmp.__cmp__(rhsCmp)
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32 if result != 0:
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33 return result
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34
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35 return len(self.value) - len(other.value)
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36
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37 elif type(self.value) == dict and type(other.value) == dict:
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38 diff = len(self.value) - len(other.value)
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39 if diff == 0:
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40 lhsItems = tuple(sorted(self.value.items(),
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41 key=NoneAndDictComparable))
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42 rhsItems = tuple(sorted(other.value.items(),
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43 key=NoneAndDictComparable))
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44 return -1 if NoneAndDictComparable(lhsItems) < NoneAndDictComparable(rhsItems) else 1
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45 else:
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46 return diff
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47
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48 elif self.value < other.value:
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49 return -1
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50
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51 else:
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52 return 1
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53
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54 def __eq__(self, other):
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55 return self.__cmp__(other) == 0
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57 def __ne__(self, other):
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58 return self.__cmp__(other) != 0
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60 def __lt__(self, other):
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61 return self.__cmp__(other) < 0
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63 def __le__(self, other):
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64 return self.__cmp__(other) <= 0
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66 def __ge__(self, other):
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67 return self.__cmp__(other) >= 0
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69 def __gt__(self, other):
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70 return self.__cmp__(other) > 0
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71
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73 def _test():
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74 Comp = NoneAndDictComparable
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75
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76 assert Comp(None) < Comp(0)
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77 assert Comp(None) < Comp('')
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78 assert Comp(None) < Comp({})
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79 assert Comp((0, None)) < Comp((0, 0))
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80 assert not Comp(0) < Comp(None)
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81 assert not Comp('') < Comp(None)
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82 assert not Comp({}) < Comp(None)
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83 assert not Comp((0, 0)) < Comp((0, None))
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84
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85 assert Comp((0, 0)) < Comp((0, 0, None))
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86 assert Comp((0, None, None)) < Comp((0, 0, 0))
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87
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88 assert Comp(0) < Comp(1)
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89 assert Comp(1) > Comp(0)
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90 assert not Comp(1) < Comp(0)
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91 assert not Comp(0) > Comp(0)
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92
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93 assert Comp({0: None}) < Comp({0: 0})
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94 assert Comp({0: 0}) < Comp({0: 1})
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95
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96 assert Comp({0: 0}) == Comp({0: 0})
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97 assert Comp({0: 0}) != Comp({0: 1})
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98 assert Comp({0: 0, 1: 1}) > Comp({0: 1})
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99 assert Comp({0: 0, 1: 1}) < Comp({0: 0, 2: 2})
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101
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102 if __name__ == '__main__':
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103 _test()
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