Hello Estefanos, 1) you should please know that it is forbidden to post code in the discussion without using the spoiler tag (I have added the tag). 2) when posting code, use proper markdown formatting. 3) To help you debug, use this as the start of your function:

def comp(array1, array2):
    print(f'array1 = {array1}')
    print(f'array2 = {array2}')

Please don't put solutions in discourse, people who haven't completed the kata can see it in their dashboard (like I did). :)

I have marked the comment as containing spoilers