TypeError：无法将'int'对象转换为str隐式错误python [英] TypeError: Can't convert 'int' object to str implicitly error python

问题描述

我读了其他问题，但我试图做的事情是不同的
我试图在python中制作一个计算器，并尝试将变量输入的东西变成一个整数，这样我就可以添加它。这是我的代码，它还没有完成，我是一个初学者：

i read other questions but the thing im trying to do is different im trying to make a calculator thingy in python and trying to make the variable input thing into a integer so i can add it. this is my code also its not finished yet and im a beginner:

print("Hello! Whats your name?")
myName = input()
print("What do you want me to do? " + myName)
print("I can add, subtract, multiply and divide.")
option = input('I want you to ')
if option == 'add':
    print('Enter a number.')
    firstNumber = input()
    firstNumber = int(firstNumber)

    print('Enter another number.')
    secondNumber = input()
    secondNumber = int(secondNumber)

    answer = firstNumber + secondNumber

    print('The answer is ' + answer)

它的作用：

Hello! Whats your name?
Jason
What do you want me to do? Jason
I can add, subtract, multiply and divide.
I want you to add
Enter a number.
1
Enter another number.
1
Traceback (most recent call last):
File "C:/Python33/calculator.py", line 17, in <module>
print('The answer is ' + answer)
TypeError: Can't convert 'int' object to str implicitly 

任何帮助将不胜感激：）

any help would be appreciated :)

推荐答案

如错误信息所示，你可以将int对象添加到str对象。

As the error message say, you can't add int object to str object.

>>> 'str' + 2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: Can't convert 'int' object to str implicitly

显式转换int对象到str对象，然后连接：

Explicitly convert int object to str object, then concatenate:

>>> 'str' + str(2)
'str2'

或使用 str.format 方法：

>>> 'The answer is {}'.format(3)
'The answer is 3'

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