Stage 2 · 25 min · Pro

Handling errors with try / except

Catch errors while a program runs: try, except ValueError, ZeroDivisionError, else, finally and raise.

Objectives

Tell syntax errors from runtime errors
Catch specific errors with except
Use else and finally
Raise your own errors with raise

This lesson is for Pro members

Users will type the wrong thing: letters where a number is needed, dividing by 0. A good program doesn't crash; it reports the problem clearly and keeps running.

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