[GitHub] [arrow] alippai opened a new issue, #34491: [Python] Add pyarrow.TableGroupBy() subtables

["alippai (via GitHub)" <gi...@apache.org>]

alippai opened a new issue, #34491:
URL: https://github.com/apache/arrow/issues/34491

   ### Describe the enhancement requested
   
   ```python
   import pyarrow as pa
   t = pa.table([
         pa.array(["a", "a", "b", "b", "c"]),
         pa.array([1, 2, 3, 4, 5]),
   ], names=["keys", "values"])
   
   for subtable in pa.TableGroupBy(t,"keys"): # loop over the 3 tables
     subtable.to_pandas() # with the keys column
     
   # alternatively
   for key_name, subtable in pa.TableGroupBy(t,"keys"): # loop over the 3 tables
     subtable.to_pandas() # without the keys column
   ```
   
   
   ### Component(s)
   
   Python


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[GitHub] [arrow] jorisvandenbossche commented on issue #34491: [Python] Add pyarrow.TableGroupBy() subtables

["jorisvandenbossche (via GitHub)" <gi...@apache.org>]

jorisvandenbossche commented on issue #34491:
URL: https://github.com/apache/arrow/issues/34491#issuecomment-1473513463

   Some related discussion at https://ursalabs.zulipchat.com/#narrow/stream/180245-dev/topic/Acero.20-.20GroupingSegmenter/near/342103440


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