默認參數

?

關鍵字參數

?

VarArgs參數

?

?

?

Code:

#-*- coding: utf-8 -*-

?

# 默認參數

def repeat_str(s, times = 1):

? ? repeated_strs = s * times

? ? return repeated_strs

???

???

repeated_strings = repeat_str("Happy Birthday!")

print(repeated_strings)

?

repeated_strings_2 = repeat_str("Happy Birthday!" , 4)

print(repeated_strings_2)

?

-->

Happy Birthday!

Happy Birthday!Happy Birthday!Happy Birthday!Happy Birthday!

-->

?

#不能在有默認參數后面跟隨沒有默認參數

#f(a, b =2)合法

#f(a = 2, b)非法

#f(a=2, b =2)合法

?

#關鍵字參數: 調用函數時，選擇性的傳入部分參數

def func(a, b = 4, c = 8):

? ? print('a is', a, 'and b is', b, 'and c is', c)

?

func(13, 17)

func(125, c = 24)

func(c = 40, a = 80)

?

-->

a is 13 and b is 17 and c is 8

a is 125 and b is 4 and c is 24

a is 80 and b is 4 and c is 40

-->

?

#VarArgs參數

def print_paras(fpara, *nums, **words):

? ? print("fpara: " + str(fpara))

? ? print("nums: " + str(nums))

? ? print("words: " + str(words))

? ???

? ???

print_paras("hello", 1, 3, 5, 7, word = "python", anohter_word = "java")

?

-->

fpara: hello

nums: (1, 3, 5, 7)

words: {'word': 'python', 'anohter_word': 'java'}

-->

?

def print_paras(fpara, *nums, **words):

普通 元組 字典 的方式輸出

轉載于:https://www.cnblogs.com/szm2019/p/7535623.html

總結

以上是生活随笔為你收集整理的3.4_函数_Function_Part_2的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。