转载: https://blog.csdn.net/mu7zp/article/details/78259693
对于全局变量的修改,如果全局变量是int或者str,那么如果想要在函数中对函数变量进行修改,则需要先在函数内,声明其为global,在进行修改,
如果是list或者dict则可以直接修改
#! /usr/bin/python
a = 1
b = [2, 3]
c = 1
def func():
a = 2
print ("in func a:", a)
b[0] = 1
print ("in func b:", b)
global c
c = 3
print ("in func c:", c)
if __name__ == '__main__':
print ("before func a:", a)
print ("before func b:", b)
print ("before func c:", c)
func()
print ("after func a:", a)
print ("after func b:", b)
print ("after func c:", c)
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结果:
参考:http://www.cnblogs.com/yanfengt/p/6305542.html