PERF: Improve performance in DataFrame.filter #52941
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phofl
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Indexing
Dr-Irv
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Apr 27, 2023
pandas/core/generic.py
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| @@ -5586,7 +5586,7 @@ def filter( | |||
| name = self._get_axis_name(axis) | |||
| # error: Keywords must be strings | |||
| return self.reindex( # type: ignore[misc] | |||
| **{name: [r for r in items if r in labels]} # type: ignore[arg-type] | |||
| **{name: labels.intersection(items)} # type: ignore[arg-type] | |||
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Seems like this type: ignore is not needed
Dr-Irv
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Apr 27, 2023
topper-123
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May 7, 2023
* PERF: Improve performance in DataFrame.filter * Update generic.py
Rylie-W
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May 19, 2023
* PERF: Improve performance in DataFrame.filter * Update generic.py
Daquisu
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Jul 8, 2023
* PERF: Improve performance in DataFrame.filter * Update generic.py
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.this gives a 40% speedup if items is relatively large