pythonNull / UndefinedEasy

Missing config key crashes the lookup

Time: 0:00

What it should do

get_setting(config, key) should return the value for a key, or the string "default" when that key isn't present.

What goes wrong

Looking up a key that isn't in the config crashes with KeyError instead of returning "default".

Hints

This is a null and undefined errors bug

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