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  • Committer: dinko.metalac at gmail
  • Date: 2015-04-14 13:28:14 UTC
  • Revision ID: dinko.metalac@gmail.com-20150414132814-j25k3qd7sq3warup
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lib/py/sympy/core/singleton.py
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"""Singleton mechanism"""
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from __future__ import print_function, division
 
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from .core import Registry
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from .assumptions import ManagedProperties
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from .sympify import sympify
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        >>> from sympy import S, Basic
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        >>> from sympy.core.singleton import Singleton
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        >>> class MySingleton(Basic, metaclass=Singleton):
 
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        >>> from sympy.core.compatibility import with_metaclass
 
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        >>> class MySingleton(with_metaclass(Singleton, Basic)):
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        ...     pass
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        >>> Basic() is Basic()
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        False