Nr. 3 is my favotite ;)

You have mistakes in the description:

• You didn't describe symbol "=" in the punctuation symbols' list !@#$%^&*()_+{}:"<>?[];',.
• You described that password should have length less than 100 but in random tests username with length 102 considered as correct.

Hey so maybe this a bit of a dumb question but shouldn't you be adding to the index value instead of subtracting? Wouldn't this go around in the opposite direction that you want it to?

There is an error in your code. Your code returns a list of bools instead of a list of ints. Your code passes test because in Python expression 1 == True returns True and 0 == False returns True. That's why, for example, [1, 0] is equal to [True, False].