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Commit 2f26644

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MarcoGorellimroeschke
andauthored
DEPR: Deprecate passing positional arguments in {DataFrame,Series}.groupby (except by and level) (#62102)
Co-authored-by: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
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‎doc/source/whatsnew/v3.0.0.rst‎

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@@ -649,6 +649,7 @@ Other Deprecations
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- Deprecated ``pd.core.internals.api.maybe_infer_ndim`` (:issue:`40226`)
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- Deprecated allowing constructing or casting to :class:`Categorical` with non-NA values that are not present in specified ``dtype.categories`` (:issue:`40996`)
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- Deprecated allowing non-keyword arguments in :meth:`DataFrame.all`, :meth:`DataFrame.min`, :meth:`DataFrame.max`, :meth:`DataFrame.sum`, :meth:`DataFrame.prod`, :meth:`DataFrame.mean`, :meth:`DataFrame.median`, :meth:`DataFrame.sem`, :meth:`DataFrame.var`, :meth:`DataFrame.std`, :meth:`DataFrame.skew`, :meth:`DataFrame.kurt`, :meth:`Series.all`, :meth:`Series.min`, :meth:`Series.max`, :meth:`Series.sum`, :meth:`Series.prod`, :meth:`Series.mean`, :meth:`Series.median`, :meth:`Series.sem`, :meth:`Series.var`, :meth:`Series.std`, :meth:`Series.skew`, and :meth:`Series.kurt`. (:issue:`57087`)
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- Deprecated allowing non-keyword arguments in :meth:`DataFrame.groupby` and :meth:`Series.groupby` except ``by`` and ``level``. (:issue:`62102`)
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- Deprecated allowing non-keyword arguments in :meth:`Series.to_markdown` except ``buf``. (:issue:`57280`)
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- Deprecated allowing non-keyword arguments in :meth:`Series.to_string` except ``buf``. (:issue:`57280`)
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- Deprecated behavior of :meth:`.DataFrameGroupBy.groups` and :meth:`.SeriesGroupBy.groups`, in a future version ``groups`` by one element list will return tuple instead of scalar. (:issue:`58858`)

‎pandas/core/frame.py‎

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@@ -9374,6 +9374,9 @@ def update(
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@Appender(_shared_docs["groupby"] % _shared_doc_kwargs)
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@deprecate_nonkeyword_arguments(
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Pandas4Warning, allowed_args=["self", "by", "level"], name="groupby"
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)
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def groupby(
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self,
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by=None,

‎pandas/core/series.py‎

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@@ -1961,6 +1961,9 @@ def _set_name(
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@Appender(_shared_docs["groupby"] % _shared_doc_kwargs)
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@deprecate_nonkeyword_arguments(
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Pandas4Warning, allowed_args=["self", "by", "level"], name="groupby"
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)
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def groupby(
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self,
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by=None,

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