求大神解答
def?average(*args):????sum=0.0????if?len(args)==0:????????return?sum????for?i?in?args:????????sum=sum+i????print?sum/len(args)print?average()print?average(1,?2)print?average(1,?2,?2,?3,?4)
為什么我的代碼運行了會比答案多兩個None
qq_L_553
2018-11-18
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2018-11-21
print?sum/len(args) 這里應該寫成return?sum/len(args),前面我們學到的自定義不寫return的話會返回none，我也是小白，不知道這么說對不對！2018-11-18
def?average(*args):????sum=0.0????
if?len(args)==0:????????return?sum????for?i?in?args:????????sum=sum+i????print?sum/len(args)print?average()print?average(1,?2)print?average(1,?2,?2,?3,?4)