Why is this not working properly?

Question

I made this password validation code bit for practice but there's a problem:
When input is hello@12, it finds it valid.
My friend gave a random input "shin@chan1", it found invalid.
Kindly solve this problem.
Thankyou.
https://code.sololearn.com/cdCxc6wJunCi/?ref=app

Answer 1

Line 13 should not have -1 in the range definition. While there is, you never check the last character, which in the case you described is the sole digit. This is why the number check fails.

Answer 2

Thanks brother.