python destructor and special call method
# -*- coding: utf-8 -*- """ Created on Sun Nov 13 23:19:03 2016 @author: toby """ #知识点:析构函数和特殊的__call__方法 ''' 析够函数: 其中的“__del__”就是一个析构函数了,当使用del 删除对象时,会调用他本身的析构函数, 另外当对象在某个作用域中调用完毕,在跳出其作用域的同时析构函数也会被调用一次,这 样可以用来释放内存空间。 ''' class Foo: def __init__(self): pass def __del__(self): #析构函数 __del__函数永远是在最后执行 print '销毁' def go(self): print 'go' def __call__(self): print 'call' f1 = Foo() #实例化对象 f1.go() #执行go方法 f1() #这里的调用实际上是直接执行__call__方法里面的代码

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