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BUG: Modify get_indexer_non_unique to account for nan keys #52655

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ltauro
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@ltauro ltauro commented Apr 13, 2023

@@ -360,6 +360,8 @@ cdef class IndexEngine:
values = self.values
stargets = set(targets)

na_in_stargets = any([checknull(t) for t in stargets])
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Suggested change
na_in_stargets = any([checknull(t) for t in stargets])
na_in_stargets = any(checknull(t) for t in stargets)

tm.assert_numpy_array_equal(np.array([0, 1, 3], dtype=np.intp), indexes)
tm.assert_numpy_array_equal(np.array([], dtype=np.intp), missing)

def test_get_indexer_non_unique_float_index(self):
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Could you pytest.mark.parameterize this test with the one above?

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Also needs a whatsnew entry in v2.1.0.rst

@mroeschke mroeschke added the Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate label Apr 15, 2023
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This pull request is stale because it has been open for thirty days with no activity. Please update and respond to this comment if you're still interested in working on this.

@github-actions github-actions bot added the Stale label May 16, 2023
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Thanks for the pull request, but it appears to have gone stale. If interested in continuing, please merge in the main branch, address any review comments and/or failing tests, and we can reopen.

@mroeschke mroeschke closed this May 17, 2023
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BUG: KeyError: '[nan] not in index' when using nan to index
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