摘要： #-*- encoding=utf-8 -*-class Singleton(object): def __new__(cls, *args, **kw): if not hasattr(cls, '_instance'): orig = super(Sin... 阅读全文

摘要： 请运行代码：class A: def __init__(self): print "A.__init" def __new__(self): print "A.__new"class B(object): def __init__(self): ... 阅读全文