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Added alignable boolean series and its example to .loc docs. #35506

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Aug 2, 2020
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Added alignable boolean series and its example to .loc docs. #35506

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#31054 Added alignable boolean series and its example to `.loc` docs.
MJafarMashhadi Aug 1, 2020
6774b78
Applied comments to fix grammatical issues
MJafarMashhadi Aug 2, 2020
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11 changes: 11 additions & 0 deletions pandas/core/indexing.py
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Expand Up @@ -255,6 +255,8 @@ def loc(self) -> "_LocIndexer":

- A boolean array of the same length as the axis being sliced,
e.g. ``[True, False, True]``.
- An alignable boolean Series. The index of the key will be aligned before
masking.
- A ``callable`` function with one argument (the calling Series or
DataFrame) and that returns valid output for indexing (one of the above)

Expand All @@ -264,6 +266,8 @@ def loc(self) -> "_LocIndexer":
------
KeyError
If any items are not found.
IndexingError
If an indexed key is passed and its index is unalignable to the frame index.

See Also
--------
Expand Down Expand Up @@ -319,6 +323,13 @@ def loc(self) -> "_LocIndexer":
max_speed shield
sidewinder 7 8

Alignable boolean Series:

>>> df.loc[pd.Series([False, True, False],
... index=['viper', 'sidewinder', 'cobra'])]
max_speed shield
sidewinder 7 8

Conditional that returns a boolean Series

>>> df.loc[df['shield'] > 6]
Expand Down