unbound local error

Question

I wrote the code which prompts the user to guess a secret letter between a and g, but i keep getting unbound local error after the last attempt (user has 3 guesses)
1. why is the error occuring
2.what is the best way to debugg it
3. can someone please explain unbound local error. googled it but cant find satisfactory answers.
https://code.sololearn.com/c0G4XnL4f0Ho/?ref=app

Answer 1

You need do initialize val before the loop. Best would be with the initial value of "Incorrect" or something.
Let's say in the line 4.
Otherwise, you refer to a variable (val) before it is initialized. So you tell Python to return a value equal to a variable which was not yet assigned to anything.