What format are answers?

findall returns a list, search returns True/False, sub returns the replaced string, all in Python repr.

What level is it for?

Anyone who knows basic regex; it moves from classes/quantifiers to groups and anchors.

Where is progress stored?

Only in local localStorage, never uploaded; full backup/restore is available.

LEARNING GAME

Regex Practice: 1000 Gamified Match and Replace Cards

Turn regex into cards: read the pattern and test string, predict the matches mentally, then reveal; 20 cards per level. It covers findall, search and sub.

0Due today

0New cards

0Day streak

0Lv.1 · 0/100

Progress is stored locally in localStorage and is lost if you clear storage. Reviews use 1/3/7/14/30/60/120-day intervals.