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pandas.core.groupby.SeriesGroupBy.nsmallest

SeriesGroupBy.nsmallest

Return the smallest n elements.

Parameters:

n : int

Return this many ascending sorted values

keep
: {‘first’, ‘last’, False}, default ‘first’

Where there are duplicate values: - first : take the first occurrence. - last : take the last occurrence.

Returns:

bottom_n : Series

The n smallest values in the Series, in sorted order

Notes

Faster than .sort_values().head(n) for small n relative to the size of the Series object.

Examples

>>> import pandas as pd
>>> import numpy as np
>>> s = pd.Series(np.random.randn(10**6))
>>> s.nsmallest(10)  # only sorts up to the N requested
288532   -4.954580
732345   -4.835960
64803    -4.812550
446457   -4.609998
501225   -4.483945
669476   -4.472935
973615   -4.401699
621279   -4.355126
773916   -4.347355
359919   -4.331927
dtype: float64
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