pythonNull / UndefinedMedium

Optional middle name breaks the full name

Time: 0:00

What it should do

full_name(user) should join a user's name parts with single spaces, skipping the middle name when there isn't one.

What goes wrong

A user without a "middle" key crashes with KeyError, and one whose middle name is None crashes with a TypeError.

Hints

This is a null and undefined errors bug

Cannot read properties of undefined, NoneType has no attribute, NaN appearing from nowhere.