Deja Vu bug

Question

I have made two solution to the problem the first one works fine but the other one is creating problem, it is always printing "Deja Vu" .
Pls help me find the bug.
https://code.sololearn.com/cjN4V5ngczDm/?ref=app

Answer 1

set does not maintain the order so list(set(listt) ) will not maintain elements order as it is in listt. *May not same as list values in order even when have same values. So may return false mostly.

Answer 2

we don't need to care about the order of a set, if we compare the length of the original input and the length of a set of the original input. converting a string to a set will remove all duplicated characters.
word = input()
if len(word) == len(set(word)):
print('Unique')
else:
print('Deja Vu')

Answer 3

Lothar thanks, that was a great use of "len()"

Answer 4

Jayakrishna🇮🇳 thankyou so much

Answer 5

You're welcome...