python 函数

def f2 (arg): if len(arg)>2: del arg[2:] li = [11,22,33,44] f2(li) print(li) >>> [11,22]

 

 

def f3 (arg): 　　arg=123 li=[11,22,33,44] f3(li) print(li)

 实际运算是

arg=li

arg=123

所以输出是[11,22,33,44,]

转载于:https://www.cnblogs.com/ezway/p/6368182.html