Python challenges 1

level of challenge = 2/10

Capital indexes

  • Write a function named capital_indexes.
  • The function takes a single parameter, which is a string. - Your function should return a list of all the indexes in the string that have capital letters.
  • For example, calling capital_indexes("HeLlO")
  • should return the list [0, 2, 4].


  • Your code should consider each letter in the string at a time.
  • Keep track of the current index; you can do this with enumerate() or manually.
  • To check if a letter is uppercase, you can use the .isupper() method,
  • or use the in operator to see if the letter is in "ABCD..XYZ".

My solution

def capital_indexes(word):
 char_list = []
 for index, char in enumerate(word):
   if char.isupper():
   return char_list

Another solution

naive solution

def capital_indexes(s):
    result = []
    for i, l in enumerate(s):
        if l in upper:
    return result


shorter version

from string import uppercase
def capital_indexes(s):
    return [i for i in range(len(s)) if s[i] in uppercase]

You can your solution in the comment