函數(shù)參數(shù)，可以自動根據(jù)名稱來匹配

def print_info(name,age):
    print("名字",name)
    print("年齡",age)
    return

print_info(age = 25,name = "Oliva")

參數(shù)可變

def printinfo(arg1,*vartuple):
    print("輸出")
    print(arg1)
    print("輸出")
    for var in vartuple:
        print(var)
    return
printinfo(10,11,12,13,14)

帶倆個**

參數(shù)會以字典的形式導入

def printinfo2(arg1,**vardict):
    print("輸出：")
    print(arg1)
    print(vardict)

printinfo2(1,a=2,b=3)

# 如果單獨出現(xiàn)星號 * 后的參數(shù)必須用關(guān)鍵字傳入。

匿名函數(shù)

sum = lambda arg1,arg2:arg1+arg2

print("相加的值:",sum(10,20))

全局變量 局部變量

total = 0;
def sum(arg1,arg2):
    total = arg1+ arg2
    print("函數(shù)內(nèi)部的局部變量:",total)
    return total

sum(10,20)
print("函數(shù)外是全局變量",total)

當局部作用域中需要改變外部作用域中的變量

需要使用global nonlocal 關(guān)鍵字

num =1
def fun1():
    global num
    print(num)
    num = 123
    print(num)
fun1()
print(num)

修改嵌套作用域

def outer():
    num =10
    def inner():
        nonlocal num
        num = 100
        print(num)

    inner()
    print(num)
outer()