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DOC: Add DataFrame.isetitem method #57614

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merged 4 commits into from
Feb 27, 2024
Merged

DOC: Add DataFrame.isetitem method #57614

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9b1780a
Add DataFrame.isetitem method
luke396 Feb 25, 2024
d511e3f
Add See-Also and Examples
luke396 Feb 25, 2024
7e52751
Fix orfer
luke396 Feb 25, 2024
5d00b0c
Update pandas/core/frame.py
luke396 Feb 27, 2024
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1 change: 1 addition & 0 deletions doc/source/reference/frame.rst
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Expand Up @@ -74,6 +74,7 @@ Indexing, iteration
DataFrame.where
DataFrame.mask
DataFrame.query
DataFrame.isetitem

For more information on ``.at``, ``.iat``, ``.loc``, and
``.iloc``, see the :ref:`indexing documentation <indexing>`.
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14 changes: 14 additions & 0 deletions pandas/core/frame.py
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Expand Up @@ -4018,6 +4018,11 @@ def isetitem(self, loc, value) -> None:
value : scalar or arraylike
Value(s) for the column.

See Also
--------
DataFrame.iloc : Purely integer-location based indexing for selection by
position.

Notes
-----
``frame.isetitem(loc, value)`` is an in-place method as it will
Expand All @@ -4028,6 +4033,15 @@ def isetitem(self, loc, value) -> None:

In cases where ``frame.columns`` is unique, this is equivalent to
``frame[frame.columns[i]] = value``.

Examples
--------
>>> df = pd.DataFrame({"A": [1, 2], "B": [3, 4]})
>>> df.isetitem(1, [5, 6])
>>> df
A B
0 1 5
1 2 6
"""
if isinstance(value, DataFrame):
if is_integer(loc):
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