一.引用 使用到的全局变量只是作为引用,不在函数中修改它的值的话,不需要加global关键字.如: #! /usr/bin/python a = 1 b = [2, 3] def func(): if a == 1: print("a: %d" %a) for i in range(4): if i in b: print("%d in list b" %i) else: print("%d not in list b" %i) if __nam
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