Capitalize every 3rd letter in a string - Python [closed]

Answer 1

Since you want every 3rd letter and not just the 3rd letter, we need to iterate the letters and generate the result according to the position of the character:

def cap_3rd(word):
    result = ""
    for i in range(1, len(word) + 1):
        if i % 3 == 0:
            result += word[i-1].upper()
        else:
            result += word[i-1]
    return result


word = "thisisaverylonglongword"
print(cap_3rd(word))  # thIsiSavEryLonGloNgwOrd