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如何检查特定位置是否是python中的字母字符?

[英]How do you check if a specific position is a letter character in python?

I know that in order to see if a variable has only letters you use .isalpha, but what if I'm trying to see if a specific position in the string is a letter? 我知道,为了查看变量是否只有字母,可以使用.isalpha,但是如果我尝试查看字符串中的特定位置是否为字母,该怎么办? How would I code that? 我该如何编码?

my_string[a_position].isalpha()

... ...

a character is just a string with one letter ... 一个字符只是一个字母组成的字符串...

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