Check what is the first letter of a string Python

I am writing a function to explain the first charachter of a string. If it is a capital it should return ‘upper’, if a lower then ‘lower’, if a digit then ‘digit’ else ‘other’

def solution(s):
    c = s[0]
    if c.isupper() == True:    
        return "upper"

The above is not returning true for "Hello"
How to go ahead?

>Solution :

This works:

def solution(s):
    c = s[0]
   
    try:
        int(c)
        return "digit"
    except ValueError:
        if c.isupper() == True:    
            return "upper"
        elif c.islower() == True:
            return "lower"
        else:
            return "other"