总和函数prob TypeError:+不支持的操作数类型:'int'和'str' [英] Sum function prob TypeError: unsupported operand type(s) for +: 'int' and 'str'

问题描述

我是python(PYTHON 3.4.2)的新手，我正在尝试制作一个可以进行加法和除法运算的程序，以查找用户输入的平均值或均值，但是我不知道如何添加我收到的号码.

I'm new to python (PYTHON 3.4.2) and I'm trying to make a program that adds and divides to find the average or the mean of a user's input, but I can't figure out how to add the numbers I receive.

当我在命令提示符下打开程序时，它会接受我输入的数字，并且如果我使用打印功能，也会打印它，但不会将数字加起来.

When I open the program at the command prompt it accepts the numbers I input and would print it also if I use a print function, but it will not sum the numbers up.

我收到此错误:

TypeError: unsupported operand type(s) for +: 'int' and 'str'

我的代码如下:

#Take the user's input
numbers = input("Enter your numbers followed by commas: ")
sum([numbers])

任何帮助将不胜感激.

推荐答案

input将输入作为字符串

>>> numbers = input("Enter your numbers followed by commas: ")
Enter your numbers followed by commas: 1,2,5,8
>>> sum(map(int,numbers.split(',')))
16

您要告诉用户使用逗号分隔输入，因此您需要用逗号分割字符串，然后将其转换为int然后求和

you are telling user to give input saperated by comma, so you need to split the string with comma, then convert them to int then sum it

演示:

>>> numbers = input("Enter your numbers followed by commas: ")
Enter your numbers followed by commas: 1,3,5,6
>>> numbers
'1,3,5,6'   # you can see its string
# you need to split it
>>> numbers = numbers.split(',')
>>> numbers
['1', '3', '5', '6']
# now you need to convert each element to integer
>>> numbers = [ x for x in map(int,numbers) ]
or
# if you are confused with map function use this:
>>> numbers  = [ int(x) for x in numbers ]
>>> numbers
[1, 3, 5, 6]
#now you can use sum function
>>>sum(numbers)
15

这篇关于总和函数prob TypeError:+不支持的操作数类型:'int'和'str'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！