petl-developers / petl / 42655955018

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Keep randomtable iterators independent of global random state (#799)

This PR fixes unstable seeded output from `randomtable()` when two
iterators are consumed together or other code calls Python's random
generator between rows. For example, two iterators over `randomtable(3,
4, seed=42)` currently return different first data rows.

Changes:

Use a separate `random.Random(seed)` instance for each iterator. This
preserves the existing seeded values and streaming behavior while
keeping iterations independent and leaving Python's global random state
unchanged.

Co-authored-by: Juarez Rudsatz <juarezr@gmail.com>

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