Track 9 · Lesson 2 of 11

Common exceptions and what they mean

Recognise ValueError, TypeError, KeyError, IndexError, AttributeError, ZeroDivisionError and NameError, and know where to look for each one's cause.

You will be able to

• Say what each of the seven most common built-in exceptions means in plain language
• Tell ValueError from TypeError and KeyError from IndexError
• Use the exception type to decide where to look for the cause
• Prevent the most common exceptions with a check where an empty or missing value is expected