4.1.3 函數(shù)參數(shù)電子課件幻燈片

函數(shù)參數(shù)形參和實(shí)參函數(shù)定義和形參defsub(a,b):returna-bsub(3,2)函數(shù)調(diào)用和實(shí)參實(shí)參的數(shù)量必須和形參保持一致位置參數(shù)：實(shí)參和形參的位置一一對應(yīng)sub(2,3,1)sub(2,3)位置參數(shù)defBirthday():print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("張三同學(xué)，送你一首歌，祝你學(xué)習(xí)進(jìn)步")Birthday()print(“李四老師，送你一首歌，祝您工作順利！")Birthday()如何在函數(shù)中加入位置參數(shù)name和hope？位置參數(shù)defBirthday(name,hope):print(name+",送你一首歌,祝你"+hope+"!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")Birthday("張三同學(xué)","學(xué)習(xí)進(jìn)步")Birthday("李四老師","工作順利")關(guān)鍵字參數(shù)defBirthday(name,hope):print(name+",送你一首歌,祝你"+hope+"!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")print("Happybirthdaytoyou!")Birthday("張三同學(xué)","學(xué)習(xí)進(jìn)步")Birthday("李四老師","工作順利")Birthday(hope="工作順利",name="李四老師")關(guān)鍵字參數(shù)可變長參數(shù)又稱為可變參數(shù)deffunc(*param):在參數(shù)前加一個(gè)*進(jìn)行標(biāo)識一個(gè)形參，任意多個(gè)實(shí)參可變長參數(shù)defcalc_sum(*scores):value_sum=0forscoreinscores:value_sum=value_sum+scorereturnvalue_sumprint(calc_sum())print(calc_sum(100))print(calc_sum(1，3，5))01009可變關(guān)鍵字參數(shù)deffunc(**param):在參數(shù)前加**進(jìn)行標(biāo)識將關(guān)鍵字參數(shù)和可變長參數(shù)的功能進(jìn)行組合可變關(guān)鍵字參數(shù)defprint_stu_info(name,stu_id,**other_info):print("Thisisallinfofor",name)print("Name:",name)print("ID:",stu_id)foritem,valueinother_info.items():print(item+':',value)print('-------------------------')print_stu_info("Andy",501)print_stu_info("Jack",503,Age=21)可變關(guān)鍵字參數(shù)defprint_stu_info(name,stu_id,**other_info):print("Thisisallinfofor",name)print("Name:",name)print("ID:",stu_id)foritem,valueinother_info.items():print(item+':',valu