didn't worked at the first time

THIS PROVES MY BRAIN IS BETTER THAN A COMPUTER!

Had exactly this (i thought) and didn't pass 1 (out of dozens of test ran)... weird...

smoove

I have a similar solution, however since isupper() has some issues with uncased characters from unicode I dont think this should be the best practice for python.
inp.upper()==inp seems more reliable IMO.

This solution does't work with non-alphanumeric characters.

@rowcased I c. Thank you. I first want to comment "no Brainer" for this question. Then when I clicked 'attempt' twice and twice it failed because it had a special character in the fixed tests.
I reread the question and realized it said, if input didn't have any letters, have to return with all caps.

That's why I was surprised to see how this code went thru.

no, you can see all 4 sample tests. when you hit attempt, there will be fixed tests and then random tests.

I had to change this code because for me this one didn't pass one special character. Is our final sample tests randomly picked?

Doesn't work with special characters.

I had the same thing happen to me, it took about three iterations of the "Attempt" button to finally let me pass.

I didn't think that it could be because of the special characters, but I guess it's the only thing that makes sense.

wow didn't notice this code exists

This doesn't work for me if the string is made of special chars...