Python: Regular Expressions

Regular expressions are a powerful tool for searching, validating, and transforming text — and Python's re module makes them fully accessible. This quiz covers the syntax of regex patterns and the key functions in the re module.

Questions test knowledge of metacharacters (., *, +, ?, ^, $, []), character classes (\d, \w, \s), groups and capturing, re.search vs re.match vs re.findall, substitution with re.sub, and compiling patterns for reuse.

Regular expressions have a reputation for being hard to read — but once you understand the building blocks, they become an indispensable tool. This quiz tests whether you've crossed that threshold.

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What This Quiz Covers

Metacharacters: . * + ? ^ $ | \ [ ] { } ( )

Character classes: \d (digit), \w (word), \s (whitespace), \b (boundary)

Quantifiers: * (0+), + (1+), ? (0 or 1), {n,m} (range)

Anchors: ^ (start), $ (end), \b (word boundary)

Groups: capturing () and non-capturing (?:)

re.search(), re.match(), re.findall(), re.finditer()

re.sub() for substitution and re.compile() for pattern reuse

Python: Regular Expressions

What This Quiz Covers

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