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Python Python Basics All Together Now Handle Exceptions

Posted by Dustin Bergsma
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Dustin Bergsma
Front End Web Development Techdegree Student 3,460 Points

String input error message

My code handles the errors possible just fine (ie, Requested tickets too many, or a string was input) I just want to make the error message cleaner when I input a string. Right now it reads: "Invalid Literal for int() with base 10: 'v'" if the request is simply too large, it generates the custom message we made. 

        num_tickets = int(num_tickets)
        #raise a ValueError if the request is for more tickets than are available
        if num_tickets > tickets_remaining:
            raise ValueError("There are only {} tickets left".format(tickets_remaining))
    except ValueError as err:
        print("That is not a valid entry. {}. Please enter number of tickets you wish to purchase".format(err))

can someone help me here?

Thanks!

1 Answer

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

When you input a string into the console... what kind of Exception does it return in the terminal? I suspect it'll be a TypeError.

Try catching a TypeError and setting a message for that in your code! :-)