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Terry Felder
1,738 PointsValueError as err: ???
Hello everybody,
Okay so i totally understand the video my only questions have to do specifically with "as err:" am i correct to assume 'as' is similar to ' for ' , 'in:' , 'def' ...meaning it is what it is and thats how it is? and the use of it is self explanitory?
err.. is this a python built in function or variable or type.....? or is it something that can be changed to anything? like errs errors and still get the same result..
and finally, how does it know to reference that particular ValueError?
thank you for all you help!!
2 Answers
Kyle Knapp
21,526 Pointsexcept ValueError as err simply assigns the alias of err to ValueError. You can use whatever alias you want.
except ValueError as flying_purple_elephants:
print(flying_purple_elephants)
will work just the same.
except ValueError will always catch the first ValueError it finds. If we wanted to catch type errors instead, we would use except TypeError, which will always catch the first TypeError it finds. except always catches the first error of the specified type that it finds by default, that's how it "knows" which value to catch.
Dylan Bailey
574 PointsKyle is spot on with his answer.
The reason it's catching that error is because it's looking for the first error that's raised.
Since we are doing...
raise ValueError("More than 1 person is required to split the check")
When our code goes into...
except ValueError as err:
it snags that error we raised earlier.