在计算中包含字符串时Python中出现错误

Question

我用Javascript进行了计算，无论我做什么，我都无法在Python中获得相同的结果。

这是有效的Javascript代码

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firstNumber = 56
secondNumber = 22

addResult = firstNumber + secondNumber
subtractResult = firstNumber - secondNumber

console.log(firstNumber + ' + ' + secondNumber + ' = ' + addResult)
console.log(firstNumber + ' - ' + secondNumber + ' = ' + subtractResult)

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它以这个结果结束...

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56 + 22 = 78
56 - 22 = 34

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这是我想要相同结果的Python代码

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firstNumber = 56
secondNumber = 22

addResult = firstNumber + secondNumber
subtractResult = firstNumber - secondNumber

What next???

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我尝试的一切都以错误结尾，有人对此有答案吗？

Answer 1

接下来，您只需要执行一些python字符串连接即可。见下文！

print('{0} + {1} = {2}'.format(firstNumber, secondNumber, addResult))
print('{0} - {1} = {2}'.format(firstNumber, secondNumber, subtractResult))

Answer 2

如果要打印：

56 + 22 = 78
56 - 22 = 34

我会做（python 3.6）：

firstNumber = 56
secondNumber = 22

print(f"{firstNumber} + {secondNumber} = {firstNumber + secondNumber}")
print(f"{firstNumber} - {secondNumber} = {firstNumber - secondNumber}")