汇总列表中的元素 [英] Summing elements in a list

问题描述

这是我的代码，我需要对列表中未定义数量的元素求和.该怎么做?

Here is my code, I need to sum an undefined number of elements in the list. How to do this?

l = raw_input()
l = l.split(' ')
l.pop(0)

我的输入:3 5 4 9 输入后，我通过l.pop(0)删除第一个元素. 在.split(' ')之后，我的列表是['5', '4', '9']，我需要对列表中的所有元素求和.

My input: 3 5 4 9 After input I delete first element via l.pop(0). After .split(' ') my list is ['5', '4', '9'] and I need to sum all elements in this list.

在这种情况下，总和为18.请注意，未定义元素数.

In this case the sum is 18. Please notice that number of elements is not defined.

推荐答案

您只需使用 sum()内置:

sum(your_list)

它将汇总所有数量的项目.示例:

It will sum as many number items as you have. Example:

my_list = range(10, 17)
my_list
[10, 11, 12, 13, 14, 15, 16]

sum(my_list)
91

针对您的具体情况:

对于您的数据，首先将数字转换为int，然后将数字求和:

For your data convert the numbers into int first and then sum the numbers:

data = ['5', '4', '9']

sum(int(i) for i in data)
18

这将适用于列表中未定义个元素(只要它们是数字")

This will work for undefined number of elements in your list (as long as they are "numbers")

如果数据为字符串格式，感谢@senderle的注释重新转换.

Thanks for @senderle's comment re conversion in case the data is in string format.

这篇关于汇总列表中的元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！