Re.findall()

Q: How deeply does Tiny Python Projects: Learn coding and testing with puzzles and games cover re.findall()?

Explains list and tuple results, capture-group ordering, and tuple unpacking, but defers broader regular-expression implementation details.

As explained in Tiny Python Projects: Learn coding and testing with puzzles and games

re.findall() is a Python regular-expression function that returns all non-overlapping matches of a pattern in a string.

re.findall() returns every non-overlapping match for a regular-expression pattern. With capture groups, it returns matching groups as tuples in parenthesis order. section 17.1.1 section 17.5

A practical extraction pattern:

Use `re.findall('(<([^<>]+)>)', text)` to find angle-bracketed placeholders while capturing both the complete placeholder and its inner name. section 17.1.1
Iterate with `for placeholder, name in matches:` to unpack each two-tuple and build prompts or other processing steps. section 17.1.1

Extracting Mad Libs placeholders

For `The quick <adjective> <noun> jumps <preposition> the lazy <noun>.`, the call returns `[('<adjective>', 'adjective'), ('<noun>', 'noun'), ('<preposition>', 'preposition'), ('<noun>', 'noun')]`. section 17.1.1

>>> from pprint import pprint
>>> matches = re.findall('(<([^<>]+)>)', text)
>>> pprint(matches)
[('<adjective>', 'adjective'),
('<noun>', 'noun'),
('<preposition>', 'preposition'),
('<noun>', 'noun')]

Inspect the complete interactive output showing every extracted placeholder and its captured name. section 17.1.1

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Regular Expression Puzzles and AI Coding Assistantsre.findall is a Python regular-expression function that returns all non-overlapping matches, including captured groups when the pattern contains them.

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Related concepts

regular expressionuses · A formal pattern notation that describes sets of strings and enables text to be matched, searched, extracted, or transformed.
tupleproduces · A tuple is a finite, ordered collection of elements treated as a single composite value or record.
splitalternative to · Split is an operation or function that divides a string or sequence into parts according to a separator, pattern, or other rule.
regex groupinguses · A regex capturing group is a parenthesized regular-expression subpattern whose matched text is retained for separate access or reference.
functionused by · A function is a defined operation that maps inputs to outputs and, when implemented as a callable program unit, may also produce effects.

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