Python列表和def函数
Python列表和def函数
提问于 2022-11-05 14:52:31
嗨，我对python很陌生，我的代码有一些小问题。
def Sumn(mylist):
i = 0
sum = 0
for i in mylist[1]:
sum += mylist[i]
return sum
i+=1import myFunctions
mylist = [6, 12, 645, 3, -8]
print(myFunctions.Sumn(mylist))我原以为列表中的数字会加起来，然后再打印出来。
Stack Overflow用户
发布于 2022-11-05 14:57:38
逐行注释：
def Sumn(mylist):
i = 0 # this variable is unused
sum = 0 # variable name overrides builtin 'sum' function
for i in mylist[1]: # this will error because mylist[1] is a single int
sum += mylist[i] # this only works if i is an index of mylist
return sum # returns in first iteration
i+=1 # this variable still isn't used for anything正确的实现可能如下所示：
def Sumn(mylist):
total = 0
for i in mylist: # iterate over each value in mylist
total += i # add it to total
return total # return AFTER the entire loop is done当然，在现实生活中，您只需调用内置的sum函数：
mylist = [6, 12, 645, 3, -8]
print(sum(mylist)) # 658页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/74328755
复制相关文章
相似问题
腾讯云开发者
