Error Handling with Try and Except

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Previous Lesson

Do you hate runtime errors and find it tedious to think of every possible condition to prevent that? What if there's a way to not get those errors? With try and except, you can fix that! Try and except allows a programmer to dictate what happens when a runtime error occurs. Here is an example of a program without try and except, and one with try and except:

•  Without Try/Except
•  With Try/Except

Here, we take the common error of trying to access an element in a list which is not there. If a user inputs less than 5 elements, it will display an error as the program tries to print the 5th element in the list. With try and except, it will try whatever is in the try phase and if there is an error, instead of going straight to the error message, it will execute whatever is in the except phase. So, if there are less that 5 elements in the list, it will print "Not enough elements!".