How do I check if something is a letter or not?

Question

I want to check if the information someone has inputted is a letter or not

a=input("Input one letter: ")
#This doesn't actually work
if a==letter:
  print("wow u inputted a letter")
else:
  print("not a letter")

also, I don't want to have to make 26 if statements

@MichaelHodel - that will give `True` for `'abc'` - I think OP wants only one letter strings to pass. `a.isalpha() and len(a) == 1` would work. — The Thonnu, Aug 24 '22 at 10:35

score 1 · Answer 1 · answered Aug 24 '22 at 10:26

There is a constant called ascii_letters in the string library:

from string import ascii_letters # 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

a = input("Input one letter: ")
if a in list(ascii_letters): # Convert to list so that each element is one character
    print('This is a letter')
else:
    print('This is not a letter')

For lowercase, use string.ascii_lowercase, and for uppercase, use string.ascii_uppercase

score 0 · Answer 2 · answered Aug 24 '22 at 10:32

0

You can also use python's built-in functions str.isalpha and len combined like so:

a.isalpha() and len(a) == 1

answered Aug 24 '22 at 10:32

game0ver

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How do I check if something is a letter or not?

2 Answers2