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Nurdok/singleton_type.py

Created April 26, 2012 15:08
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Singleton Implementation in Python Using Metaclasses
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singleton_type.py
class SingletonType(type):
def __call__(cls, *args, **kwargs):
try:
return cls.__instance
except AttributeError:
cls.__instance = super(SingletonType, cls).__call__(*args, **kwargs)
return cls.__instance
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