python 函数 return 在if判断之中和 以及if判断结束后 均为先到先出
def my_fun(x=1):
if x > 0:
return '满足x>0'
elif x < 0:
return '满足x<0'
x = '都不满足'
return x
my_fun(1)
my_fun(0)
# return属于先到先出,即一旦满足即return,且后面的代码不运行
# 如果前面的代码不满足,才运行后面的代码并return暂无评论
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