TypeError：无法将“int”对象隐式转换为str答案

【问题标题】：TypeError: Can't convert 'int' object to str implicitlyTypeError：无法将“int”对象隐式转换为str
【发布时间】：2012-11-19 04:51:05
【问题描述】：

我正在尝试编写一个文本游戏，但我在定义的函数中遇到了一个错误，该函数让你在制作角色后基本上可以花费你的技能点。起初，错误表明我试图从这部分代码中的整数中减去一个字符串：balance - strength。显然那是错误的，所以我用strength = int(strength) 修复了它...但现在我遇到了这个我以前从未见过的错误（新程序员），我很难理解它到底想告诉我什么以及我如何修复它.

这是我的代码，用于部分功能不起作用：

def attributeSelection():
    balance = 25
    print("Your SP balance is currently 25.")
    strength = input("How much SP do you want to put into strength?")
    strength = int(strength)
    balanceAfterStrength = balance - strength
    if balanceAfterStrength == 0:
        print("Your SP balance is now 0.")
        attributeConfirmation()
    elif strength < 0:
        print("That is an invalid input. Restarting attribute selection. Keep an eye on your balance this time!")
        attributeSelection()
    elif strength > balance:
        print("That is an invalid input. Restarting attribute selection. Keep an eye on your balance this time!")
        attributeSelection()
    elif balanceAfterStrength > 0 and balanceAfterStrength < 26:
        print("Ok. You're balance is now at " + balanceAfterStrength + " skill points.")
    else:
        print("That is an invalid input. Restarting attribute selection.")
        attributeSelection()

这是我在 shell 中访问这部分代码时遇到的错误：

    Your SP balance is currently 25.
How much SP do you want to put into strength?5
Traceback (most recent call last):
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 205, in <module>
    gender()
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 22, in gender
    customizationMan()
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 54, in customizationMan
    characterConfirmation()
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 93, in characterConfirmation
    characterConfirmation()
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 85, in characterConfirmation
    attributeSelection()
  File "C:\Python32\APOCALYPSE GAME LIBRARY\apocalypseGame.py", line 143, in attributeSelection
    print("Ok. You're balance is now at " + balanceAfterStrength + " skill points.")
TypeError: Can't convert 'int' object to str implicitly

有谁知道如何解决这个问题？先谢谢了。

【问题讨论】：

你必须这样做 str(balanceAfterStrength) 因为 Python 的座右铭之一是“显式优于隐式”
我知道这与问题完全无关，但是从balance 中减去后的strength > balance 检查意味着您最多只能将余额的一半用于强度。这是故意的，还是bug？（而且，当我选择无关紧要的内容时，“好吧。你的余额现在是“-“你的”而不是“你是”，而且你不需要“在”。）
我知道它有很多问题，我还有很多调试工作要做。
Converting integer to string in Python? 的可能重复项

标签： python string int implicit

【解决方案1】：

您不能将string 与int 连接。您需要使用str 函数将int 转换为string，或使用formatting 来格式化您的输出。

更改：-

print("Ok. Your balance is now at " + balanceAfterStrength + " skill points.")

到：-

print("Ok. Your balance is now at {} skill points.".format(balanceAfterStrength))

或：-

print("Ok. Your balance is now at " + str(balanceAfterStrength) + " skill points.")

或根据评论，使用, 将不同的字符串传递给您的print 函数，而不是使用+ 连接：-

print("Ok. Your balance is now at ", balanceAfterStrength, " skill points.")

【讨论】：

或者，而不是尝试添加，print("Ok. You're balance is now at", str, "skill points")。
@abarnert.. 是的，这比+ 好。
但是当您的编辑被写入时，它具有误导性。您不能使用, 连接字符串；您可以使用, 分隔print 的参数，这些参数将一一打印，它们之间有空格。
好的，我要将我的代码更改为您建议 Rohit 的最后一种格式。感谢您的帮助！
@TylerHaddaway.. 当然你不能将"abc" 转换为整数。但是，是的，您可以使用int("12") 将"12" 转换为整数。

【解决方案2】：

def attributeSelection():
balance = 25
print("Your SP balance is currently 25.")
strength = input("How much SP do you want to put into strength?")
balanceAfterStrength = balance - int(strength)
if balanceAfterStrength == 0:
    print("Your SP balance is now 0.")
    attributeConfirmation()
elif strength < 0:
    print("That is an invalid input. Restarting attribute selection. Keep an eye on your balance this time!")
    attributeSelection()
elif strength > balance:
    print("That is an invalid input. Restarting attribute selection. Keep an eye on your balance this time!")
    attributeSelection()
elif balanceAfterStrength > 0 and balanceAfterStrength < 26:
    print("Ok. You're balance is now at " + str(balanceAfterStrength) + " skill points.")
else:
    print("That is an invalid input. Restarting attribute selection.")
    attributeSelection()

【讨论】：