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needs testing, should fix #201 using pypa implementation of PEP440
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gabriel pettier
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May 30, 2015
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# Copyright 2014 Donald Stufft | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
from __future__ import absolute_import, division, print_function | ||
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class Infinity(object): | ||
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def __repr__(self): | ||
return "Infinity" | ||
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def __hash__(self): | ||
return hash(repr(self)) | ||
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def __lt__(self, other): | ||
return False | ||
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def __le__(self, other): | ||
return False | ||
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def __eq__(self, other): | ||
return isinstance(other, self.__class__) | ||
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def __ne__(self, other): | ||
return not isinstance(other, self.__class__) | ||
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def __gt__(self, other): | ||
return True | ||
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def __ge__(self, other): | ||
return True | ||
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def __neg__(self): | ||
return NegativeInfinity | ||
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Infinity = Infinity() | ||
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class NegativeInfinity(object): | ||
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def __repr__(self): | ||
return "-Infinity" | ||
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def __hash__(self): | ||
return hash(repr(self)) | ||
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def __lt__(self, other): | ||
return True | ||
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def __le__(self, other): | ||
return True | ||
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def __eq__(self, other): | ||
return isinstance(other, self.__class__) | ||
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def __ne__(self, other): | ||
return not isinstance(other, self.__class__) | ||
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def __gt__(self, other): | ||
return False | ||
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def __ge__(self, other): | ||
return False | ||
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def __neg__(self): | ||
return Infinity | ||
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NegativeInfinity = NegativeInfinity() |
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