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API: Add Series/Index.unique(dropna=True) #13984

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sinhrks opened this issue Aug 13, 2016 · 2 comments
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API: Add Series/Index.unique(dropna=True) #13984

sinhrks opened this issue Aug 13, 2016 · 2 comments
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Closing Candidate May be closeable, needs more eyeballs Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

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@sinhrks
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sinhrks commented Aug 13, 2016 •
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Series/Index.nunique has dropna kw to exclude NaN. Add the same kw to .unique also.

As #13979 changes .unique to always return Index, we can replace Index._get_unique_index(dropna) if this option is added.
@sinhrks sinhrks added Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate API Design labels Aug 13, 2016
@sinhrks sinhrks added this to the 0.19.0 milestone Aug 13, 2016
@jorisvandenbossche jorisvandenbossche modified the milestones: Next Major Release, 0.19.0 Aug 15, 2016
@sinhrks sinhrks mentioned this issue Aug 16, 2016
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@h-vetinari h-vetinari mentioned this issue Sep 24, 2018
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@mroeschke mroeschke removed this from the Contributions Welcome milestone Oct 13, 2022
@jbrockmendel
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Why isn't obj.unique().dropna() not good enough?

@jbrockmendel jbrockmendel added the Closing Candidate May be closeable, needs more eyeballs label Feb 12, 2023
@mroeschke
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Yeah agreed calling dropna should be sufficient. Closing

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Closing Candidate May be closeable, needs more eyeballs Enhancement Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
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