Track 9 · Lesson 6 of 11

Custom exceptions

Define your own exception classes and small hierarchies so callers can catch exactly the problems they care about.

You will be able to

• Define a custom exception class with one line of class syntax
• Raise and catch your own exception types
• Build a small hierarchy with a base class so callers can catch a whole family of errors
• Order except clauses from most specific to most general