REGR: non-unique, masked dtype index raising IndexError #57061
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lukemanley
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Indexing
WillAyd
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Jan 25, 2024
pandas/_libs/index.pyx
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| @@ -1220,6 +1220,7 @@ cdef class MaskedIndexEngine(IndexEngine): | |||
| n_alloc *= 2 | |||
| if n_alloc > max_alloc: | |||
| n_alloc = max_alloc | |||
| result = np.resize(result, n_alloc) | |||
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Is this required to resize here? If so can we get rid of the resize that happens after this branch is completed? Might be misreading but it looks duplicative
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I think this is required. The result size isn't known so I believe the resize check needs to be done each time a new value is set. I don't see a way to avoid it with the current algo.
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Ah yea that makes sense. I think its worth making the conditional resize its own function then so we don't have as much duplication
WillAyd
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Jan 26, 2024
mroeschke
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Jan 29, 2024
mroeschke
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Jan 30, 2024
|
Thanks @lukemanley |
meeseeksmachine
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Jan 30, 2024
…ising IndexError
mroeschke
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Jan 30, 2024
…dex raising IndexError) (#57142) Backport PR #57061: REGR: non-unique, masked dtype index raising IndexError Co-authored-by: Luke Manley <[email protected]>
pmhatre1
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May 7, 2024
…7061) * fix masked indexing regression * fix test * fix test * dedup resizing logic * add types
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doc/source/whatsnew/v2.2.1.rstfile if fixing a bug or adding a new feature.