Python 类型错误：不支持 / 的操作数类型：'str' 和 'str'
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TypeError: unsupported operand type(s) for /: 'str' and 'str'
提问by Deric miller
name = input('Enter name here:')
pyc = input('enter pyc :')
tpy = input('enter tpy:')
percent = (pyc / tpy) * 100;
print (percent)
input('press enter to quit')
whenever i run this program i get this
每当我运行这个程序时，我都会得到这个
TypeError: unsupported operand type(s) for /: 'str' and 'str'
what can i do to divide pyc by tpy?
我该怎么做才能将 pyc 除以 tpy？
采纳答案by Martijn Pieters
By turning them into integers instead:
通过将它们转换为整数：
percent = (int(pyc) / int(tpy)) * 100;
In python 3, the input()function returns a string. Always. This is a change from Python 2; the raw_input()function was renamed to input().
在 python 3 中，该input()函数返回一个字符串。总是。这是对 Python 2 的改变；该raw_input()函数已重命名为input().
回答by Bryan Oakley
The first thing you should do is learn to read error messages. What does it tell you -- that you can't use two strings with the divide operator.
您应该做的第一件事是学习阅读错误消息。它告诉您什么 - 您不能将两个字符串与除法运算符一起使用。
So, ask yourself why they are strings and how do you make them not-strings. They are strings because all input is done via strings. And the way to make then not-strings is to convert them.
因此，问问自己为什么它们是字符串，以及如何使它们成为非字符串。它们是字符串，因为所有输入都是通过字符串完成的。制作非字符串的方法是转换它们。
One way to convert a string to an integer is to use the intfunction. For example:
将字符串转换为整数的一种方法是使用int函数。例如：
percent = (int(pyc) / int(tpy)) * 100
回答by Kovalchuk
I would have written:
我会写：
percent = 100
while True:
try:
pyc = int(input('enter pyc :'))
tpy = int(input('enter tpy:'))
percent = (pyc / tpy) * percent
break
except ZeroDivisionError as detail:
print 'Handling run-time error:', detail
