How to check if character in string is a letter? Python

So I know about islower and isupper, but i can't seem to find out if you can check whether or not that character is a letter?

Example:

s = 'abcdefg'

s2 = '123abcd'
s3 = 'abcDEFG'

s[0].islower() = True
s2[0].islower()= False
s3[0].islower()=True

is there any way to just ask if it is a character besides doing .islower() or .isupper() ?

Answer

You can use str.isalpha().

For example:

s = 'a123b'

for char in s:
    print(char, char.isalpha())

Output:

a True
1 False
2 False
3 False
b True