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BUG: Series.quantile dtype / nan handling issue #12772

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sinhrks opened this issue Apr 2, 2016 · 0 comments

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commented Apr 2, 2016

Found some issues when working on #12572. Both being fixed.

Code Sample, a copy-pastable example if possible

1. DataFrame may coerce to float even if interpolation
# OK, same as numpy
pd.Series([1, 2, 3]).quantile([0.5], interpolation='lower').dtypes
# dtype('int64')

# NG, it must be int
pd.DataFrame({'A': [1, 2, 3]}).quantile([0.5], interpolation='lower').dtypes
# A    float64
# dtype: object
2. May return scalar even if its input is a list-like
# NG, it must be a Series
pd.Series([]).quantile([0.2, 0.3])
# nan

output of pd.show_versions()

Current master.

@sinhrks sinhrks added this to the 0.18.1 milestone Apr 2, 2016

@sinhrks sinhrks referenced this issue Apr 2, 2016

Closed

CLN: Move boxing logic to BlockManager #12752

5 of 5 tasks complete

jreback added a commit to jreback/pandas that referenced this issue Apr 3, 2016

CLN: Move boxing logic to BlockManager
CLN: clean up quantile & move to BlockManager

closes pandas-dev#12741
closes pandas-dev#12772
closes pandas-dev#12469
closes pandas-dev#12752

@jreback jreback closed this in 36a8bd9 Apr 3, 2016

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