TypeError：无法将’int’对象转换为str隐式错误python


TypeError: Can't convert 'int' object to str implicitly error python

本问题已经有最佳答案，请猛点这里访问。

我读过其他问题，但我想做的是不同的我试着用python编写一个计算器，并试着将变量输入变成一个整数，这样我就可以添加它了。这是我的代码，它还没有完成，我是一个初学者：

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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：

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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

号

如有任何帮助，我们将不胜感激：)

正如错误消息所说，不能向str对象添加int对象。

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

显式将int对象转换为str对象，然后连接：

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

号

或采用str.format法：

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