string indices must be integers
时间: 2023-10-15 13:19:01 浏览: 74
This error is raised when you try to use a non-integer value as an index for a string. In Python, a string is a sequence of characters, and each character is assigned an index number starting from 0. For example, in the string "hello", the character "h" has index 0, "e" has index 1, and so on.
If you try to use a non-integer value, such as a float or a string, as an index for a string, Python will raise a TypeError with the message "string indices must be integers". For example:
```
my_string = "hello"
index = 2.5
print(my_string[index])
```
Output:
```
TypeError: string indices must be integers
```
To fix this error, make sure you are using an integer value as the index for the string. If you need to convert a non-integer value to an integer, you can use the int() function. For example:
```
my_string = "hello"
index = int(2.5)
print(my_string[index])
```
Output:
```
l
```
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