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Pull requests: pandas-dev/pandas

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PERF: GH2121 groupby transform Groupby Performance Memory or execution speed performance
#3145 by jreback was merged Mar 25, 2013 Loading… 0.11
BUG: GH2763 fixed downcasting of groupby results on SeriesGroupBy Bug Dtype Conversions Unexpected or buggy dtype conversions Groupby
#3152 by jreback was merged Mar 24, 2013 Loading… 0.11
add optional default value to GroupBy.get_group API Design Groupby Indexing Related to indexing on series/frames, not to indexes themselves
#5452 by dwiel was closed Jan 18, 2015 Loading… 0.16.0
API change in groupby head and tail Groupby
#6533 by hayd was merged Mar 6, 2014 Loading… 0.14.0
DOC/API: pd.Grouper docs / api API Design Docs Groupby Resample resample method
#6655 by jreback was merged Mar 17, 2014 Loading… 0.14.0
BUG: Bug in downcasting inference with empty arrays (GH6733) Bug Dtype Conversions Unexpected or buggy dtype conversions Groupby
#6737 by jreback was merged Mar 29, 2014 Loading… 0.14.0
ENH: pivot_table can now accept Grouper API Design Groupby Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#6913 by sinhrks was merged Apr 27, 2014 Loading… 0.14.0
BUG: GroupBy.get_group raises ValueError when group key contains NaT Groupby Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
#6996 by sinhrks was merged May 30, 2015 Loading… 0.16.2
make grouping column an agg Bug Groupby
#6997 by hayd was closed Apr 29, 2014 Loading… 0.14.0
TST: tests for groupby not using grouper column, solved in GH7000, (GH5614) Bug Groupby Testing pandas testing functions or related to the test suite
#7019 by jreback was merged May 1, 2014 Loading… 0.14.0
BUG: error in Float64Index with contains and non-float (GH7025) Bug Dtype Conversions Unexpected or buggy dtype conversions Groupby
#7026 by jreback was merged May 2, 2014 Loading… 0.14.0
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