本文介绍了TypeError: 不支持的操作数类型 -: 'str' 和 'int'的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！
问题描述
我怎么会收到这个错误?
How come I'm getting this error?
我的代码:
def cat_n_times(s, n):
while s != 0:
print(n)
s = s - 1
text = input("What would you like the computer to repeat back to you: ")
num = input("How many times: ")
cat_n_times(num, text)
错误:
TypeError: unsupported operand type(s) for -: 'str' and 'int'
推荐答案
失败的原因是(Python 3)
input返回一个字符串.要将其转换为整数，请使用int(some_string).
The reason this is failing is because (Python 3)
inputreturns a string. To convert it to an integer, useint(some_string).
您通常不会在 Python 中手动跟踪索引.实现这种功能的更好方法是
You do not typically keep track of indices manually in Python. A better way to implement such a function would be
def cat_n_times(s, n):
for i in range(n):
print(s)
text = input("What would you like the computer to repeat back to you: ")
num = int(input("How many times: ")) # Convert to an int immediately.
cat_n_times(text, num)
我在上面修改了你的 API.在我看来 n 应该是 number of times 而 s 应该是 string.
I changed your API above a bit. It seems to me that n should be the number of times and s should be the string.
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