password.py

# Requirements: 
# - upper case characters >= 1
# - no digits

# I/p
# S -> len(S) = N
# O/P -> len(longest_substring) which passes requirements

import re
from string import ascii_uppercase

def check_caps(sub_string):
    caps_strings = []
    for i in sub_string:
        if any(x in ascii_uppercase for x in i) == True:
            caps_strings.append(i)
    return caps_strings

def get_sub_strings(S):
    return re.compile("\d").split(S)

def solution(S):
    sub_strings = get_sub_strings(S)
    caps_strings = check_caps(sub_strings)
    if len(caps_strings) == 0:
        return -1
    else:
        longest_string = max(caps_strings, key=len)
        return len(longest_string)