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Bug in RangeIndex.where raising AssertionError when result is not from RangeIndex #43251

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Merged
merged 4 commits into from
Aug 27, 2021

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phofl
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@phofl phofl commented Aug 27, 2021

cc @jbrockmendel
2 options here:

  • calling _shallow_copy which handles the cast to Int64Index in theses cases
  • implementing a similar logic in _simple_new passing the call through to Int64Index or Float64Index depending on the dtype

But not sure if this would be counterintuitive for _simple_new.

@phofl phofl added Index Related to the Index class or subclasses Regression Functionality that used to work in a prior pandas version labels Aug 27, 2021
@phofl phofl added this to the 1.3.3 milestone Aug 27, 2021
@@ -4890,8 +4890,7 @@ def putmask(self, mask, value) -> Index:
values, mask.sum(), converted # type: ignore[arg-type]
)
np.putmask(values, mask, converted)

return type(self)._simple_new(values, name=self.name)
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this line also turns out to be wrong for the MultiIndex case, xref #43219

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LGTM

@simonjayhawkins simonjayhawkins merged commit 4bb52f2 into pandas-dev:master Aug 27, 2021
meeseeksmachine pushed a commit to meeseeksmachine/pandas that referenced this pull request Aug 27, 2021
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Thanks @phofl

@phofl phofl deleted the 43244 branch August 27, 2021 18:17
simonjayhawkins pushed a commit that referenced this pull request Aug 28, 2021
…en result is not from RangeIndex (#43259)

Co-authored-by: Patrick Hoefler <[email protected]>
feefladder pushed a commit to feefladder/pandas that referenced this pull request Sep 7, 2021
…m RangeIndex (pandas-dev#43251)

* Fix promote issue in range putmask

* Improve test and add whatsnew

* Change issue reference
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BUG: RangeIndex.where throws AssertionError
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