43 lines
874 B
Python
43 lines
874 B
Python
#
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from appPublic.dictObject import DictObject
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class SingletonDecorator:
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def __init__(self,klass):
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self.klass = klass
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self.instance = None
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def __call__(self,*args,**kwds):
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if self.instance == None:
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self.instance = self.klass(*args,**kwds)
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return self.instance
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@SingletonDecorator
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class GlobalEnv(DictObject):
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pass
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if __name__ == '__main__':
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@SingletonDecorator
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class Child(object):
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def __init__(self,name):
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print("clild.init")
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self.name = name
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def __str__(self):
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return 'HAHA：' + self.name
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def __expr__(self):
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print(self.name)
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@SingletonDecorator
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class Handle(object):
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def __init__(self,name):
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self.name = name
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def __expr__(self):
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print(self.name)
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c = Child('me')
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d = Child('he')
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print(str(c),str(d))
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e = Handle('hammer')
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f = Handle('nail');
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print(str(e),str(f))
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