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Start your free trialMikael Van Vyve
5,298 PointsProblem with the try method.
Hi everyone,
So in my script I use the 'try' method to check if the user input is an integer. This works every time except when the script first runs and I pass a non-int value on the very first guess. I get an unbound local error like this: "UnboundLocalError: local variable 'guess' referenced before assignment"
if I pass a non convertible int on any other try, the program works just fine. Anyone have any ideas?
Thx.
1 Answer
Chris Freeman
Treehouse Moderator 68,441 PointsIt would help to see your code but based on your description, if it only fails for non-int
s on the first pass then the try
block is failing, the except
block is run, and the else
block, if present is skipped.
In this flow, if guess
is only assigned in the try
block, it will not yet have an assigned value for a non-int on the first pass. The first reference to guess
after the try block will fail as you have seen.
One fix is to add guess = None
in the except
block or add the line above the try
block to init guess
.