|PYTHON|BEGINNER| This code isnt working for the last 4 or 5 indexes of the string. Why?

The purpose of this code is to make the odd placed letters uppercase and the odd ones lower cased, I’ve tried about everything I can think of and it doesnt work.

def myfunc(word):
    new_word = ''
    for let in word:
        if (word.index(let) + 1) % 2 == 0:
            new_word += let.upper()
        elif (word.index(let) + 1) % 2 == 1:
            new_word += let.lower()
            
    return new_word

The code works fine for the first few but when it gets towards the end it looses its brain cells.

Input
myfunc('Anthropomorphism')

Output
'aNtHrOpOmOrpHIsm'

Expected Output:
'aNtHrOpOmOrPhIsM'

Any ideas why it doesnt work?

>Solution :

word.index(let) will get you the first index of that letter, not the current one as you iterate. Use for index, letter in enumerate(word): instead.

def myfunc(word):
    new_word = ''
    for index, let in enumerate(word):
        if (index + 1) % 2 == 0:
            new_word += let.upper()
        elif (index + 1) % 2 == 1:
            new_word += let.lower()
            
    return new_word