How to make a function return a list of indices of the characters in the second string that appears in the first string?

Question

def get_indices_from_the_second_string(string1, string2):
    \'\'\'(str, str) -> list of int
    >>> get_indices_from_the_second_string(\'AGTACACGTTAC\', \'         


        

Answer 1

def get_indices_from_the_second_string(string1, string2):
    acc = []
    s2_counter = 0
    for i, letter in enumerate(string1):
        if letter == string2[s2_counter]:
            acc.append(i)
            s2_counter += 1
            if len(acc) == len(string2):
                break
    return acc

a = get_indices_from_the_second_string('GAATTCCGTTAC', 'GAATTC')