79 lines
1.7 KiB
Python
79 lines
1.7 KiB
Python
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# Copyright 2014 Donald Stufft
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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class Infinity:
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def __repr__(self):
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return "Infinity"
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def __hash__(self):
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return hash(repr(self))
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def __lt__(self, other):
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return False
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def __le__(self, other):
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return False
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def __eq__(self, other):
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return isinstance(other, self.__class__)
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def __ne__(self, other):
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return not isinstance(other, self.__class__)
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def __gt__(self, other):
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return True
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def __ge__(self, other):
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return True
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def __neg__(self):
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return NegativeInfinity
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Infinity = Infinity()
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class NegativeInfinity:
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def __repr__(self):
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return "-Infinity"
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def __hash__(self):
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return hash(repr(self))
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def __lt__(self, other):
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return True
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def __le__(self, other):
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return True
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def __eq__(self, other):
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return isinstance(other, self.__class__)
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def __ne__(self, other):
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return not isinstance(other, self.__class__)
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def __gt__(self, other):
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return False
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def __ge__(self, other):
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return False
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def __neg__(self):
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return Infinity
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NegativeInfinity = NegativeInfinity()
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