Group
group() is a regular-expression match-object method that returns the complete match or the text captured by a specified capturing group.
The Quick Python Book, Fourth Edition
group is a match-object method that retrieves the substring captured by a specified regular-expression group.
- How it is used
- Retrieves captured fields from regex matches for record parsing and replacement functions.
- How deep it goes
- Works through named-group syntax, match checking, optional captures, and callback retrieval; does not detail match-object internals.
- Examples
- Uses a surname-and-phone record parser and a number-to-decimal-string replacement.
- What you can do after
- Apply it via Python’s `re` module to extract named fields and construct replacement strings from matches.
Read how The Quick Python Book, Fourth Edition explains group →
Python How-To
A group method is a regular-expression match operation that returns the substring captured by specified groups or the complete match when no group number is supplied.
- How it is used
- Retrieves complete matches or selected captured fields for downstream text processing.
- How deep it goes
- Explains complete, numbered, and named retrieval through worked examples, while warning that positional numbering becomes error-prone.
- Examples
- Demonstrates extracting words from a phrase and task IDs, titles, and descriptions from structured text.
- What you can do after
- Apply Python's regular-expression Match API to retrieve complete, numbered, or named captured text.
Related concepts
- match objectused by · A match object is a regular-expression result structure containing matched text and providing access to its location and captured groups.
- regex groupinguses · A regex capturing group is a parenthesized regular-expression subpattern whose matched text is retained for separate access or reference.
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