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Bryan Cutler authored and Antoine Pitrou committed 1a2d0484d1e
ARROW-10151: [Python] Add support for MapArray conversion to Pandas This change adds conversion for a `pyarrow.MapArray` to Pandas as a column of lists of tuples, where each tuple is a key/item pair. Unit tests were added for python to verify conversion for Pandas round-trip, chunked arrays and `MapArray` with NULL map and NULL items. Closes #8337 from BryanCutler/map-type-to-pandas Lead-authored-by: Bryan Cutler <cutlerb@gmail.com> Co-authored-by: Antoine Pitrou <antoine@python.org> Signed-off-by: Antoine Pitrou <antoine@python.org>