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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 

 

 

class Infinity(object): 

 

    def __repr__(self): 

        return "Infinity" 

 

    def __hash__(self): 

        return hash(repr(self)) 

 

    def __lt__(self, other): 

        return False 

 

    def __le__(self, other): 

        return False 

 

    def __eq__(self, other): 

        return isinstance(other, self.__class__) 

 

    def __ne__(self, other): 

        return not isinstance(other, self.__class__) 

 

    def __gt__(self, other): 

        return True 

 

    def __ge__(self, other): 

        return True 

 

    def __neg__(self): 

        return NegativeInfinity 

 

Infinity = Infinity() 

 

 

class NegativeInfinity(object): 

 

    def __repr__(self): 

        return "-Infinity" 

 

    def __hash__(self): 

        return hash(repr(self)) 

 

    def __lt__(self, other): 

        return True 

 

    def __le__(self, other): 

        return True 

 

    def __eq__(self, other): 

        return isinstance(other, self.__class__) 

 

    def __ne__(self, other): 

        return not isinstance(other, self.__class__) 

 

    def __gt__(self, other): 

        return False 

 

    def __ge__(self, other): 

        return False 

 

    def __neg__(self): 

        return Infinity 

 

NegativeInfinity = NegativeInfinity()