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groupby.rst

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{{ header }}

GroupBy

.. currentmodule:: pandas.core.groupby

GroupBy objects are returned by groupby calls: :func:`pandas.DataFrame.groupby`, :func:`pandas.Series.groupby`, etc.

Indexing, iteration

.. autosummary::
   :toctree: api/

   GroupBy.__iter__
   GroupBy.groups
   GroupBy.indices
   GroupBy.get_group


.. currentmodule:: pandas


.. autosummary::
   :toctree: api/
   :template: autosummary/class_without_autosummary.rst

   Grouper


.. currentmodule:: pandas.core.groupby

Function application

.. autosummary::
   :toctree: api/

   GroupBy.apply
   GroupBy.agg
   GroupBy.aggregate
   GroupBy.transform
   GroupBy.pipe

Computations / Descriptive Stats

.. autosummary::
   :toctree: api/

   GroupBy.all
   GroupBy.any
   GroupBy.bfill
   GroupBy.count
   GroupBy.cumcount
   GroupBy.ffill
   GroupBy.first
   GroupBy.head
   GroupBy.last
   GroupBy.max
   GroupBy.mean
   GroupBy.median
   GroupBy.min
   GroupBy.ngroup
   GroupBy.nth
   GroupBy.ohlc
   GroupBy.prod
   GroupBy.rank
   GroupBy.pct_change
   GroupBy.size
   GroupBy.sem
   GroupBy.std
   GroupBy.sum
   GroupBy.var
   GroupBy.tail

The following methods are available in both SeriesGroupBy and DataFrameGroupBy objects, but may differ slightly, usually in that the DataFrameGroupBy version usually permits the specification of an axis argument, and often an argument indicating whether to restrict application to columns of a specific data type.

.. autosummary::
   :toctree: api/

   DataFrameGroupBy.all
   DataFrameGroupBy.any
   DataFrameGroupBy.bfill
   DataFrameGroupBy.corr
   DataFrameGroupBy.count
   DataFrameGroupBy.cov
   DataFrameGroupBy.cummax
   DataFrameGroupBy.cummin
   DataFrameGroupBy.cumprod
   DataFrameGroupBy.cumsum
   DataFrameGroupBy.describe
   DataFrameGroupBy.diff
   DataFrameGroupBy.ffill
   DataFrameGroupBy.fillna
   DataFrameGroupBy.filter
   DataFrameGroupBy.hist
   DataFrameGroupBy.idxmax
   DataFrameGroupBy.idxmin
   DataFrameGroupBy.mad
   DataFrameGroupBy.nunique
   DataFrameGroupBy.pct_change
   DataFrameGroupBy.plot
   DataFrameGroupBy.quantile
   DataFrameGroupBy.rank
   DataFrameGroupBy.resample
   DataFrameGroupBy.shift
   DataFrameGroupBy.size
   DataFrameGroupBy.skew
   DataFrameGroupBy.take
   DataFrameGroupBy.tshift

The following methods are available only for SeriesGroupBy objects.

.. autosummary::
   :toctree: api/

   SeriesGroupBy.nlargest
   SeriesGroupBy.nsmallest
   SeriesGroupBy.nunique
   SeriesGroupBy.unique
   SeriesGroupBy.value_counts
   SeriesGroupBy.is_monotonic_increasing
   SeriesGroupBy.is_monotonic_decreasing

The following methods are available only for DataFrameGroupBy objects.

.. autosummary::
   :toctree: api/

   DataFrameGroupBy.corrwith
   DataFrameGroupBy.boxplot