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Python Python Basics All Together Now Cleaner Code Through Refactoring

Stefan Siljanovski
Stefan Siljanovski
6,063 Points
Posted by Stefan Siljanovski
Stefan Siljanovski
6,063 Points

When asked how many tickets I input negative number (-5) and still sold me tickets ?

It still sold me tickets after answering negative number (-5) and gave me a total due of -48 and increased the number of tickets for variable tickets_remaining to 105 . How do we prevent that from happening ?

1 Answer

Steven Parker
Steven Parker
229,783 Points
Steven Parker
Steven Parker
229,783 Points

The original code only checks if the requested number is more than the remaining tickets. But you can easily add another check for a number that is too small:

        if num_tickets < 1:
            raise ValueError("We cannot sell less than 1 ticket!")
Steven Parker
Steven Parker
229,783 Points
Steven Parker
Steven Parker
229,783 Points

So based on your snapshot, those two lines could be placed between lines 15 and 16 or between 17 and 18.