例子1：
names=("Lili","Rain","Jack")
change_name(name):
names[0]="LiLy"
print(names)
结果：names=("LiLy","Rain","Jack") #列表可以在函数中直接修改
例子2：
names=｛"name":"LiLy","age":18,"sex":"F"｝
change_name(name):
names[school]="Oldboy"
print(names)
结果：names=｛"name":"LiLy","age":18,"sex":"F","school":"Oldboy"｝ #字典可以在函数中直接修改
)
