pandas.Series.nlargest — pandas 0.18.1 documentation (original) (raw)
Series.nlargest(*args, **kwargs)¶
Return the largest n elements.
| Parameters: | n : int Return this many descending sorted values keep : {‘first’, ‘last’, False}, default ‘first’ Where there are duplicate values: - first : take the first occurrence. - last : take the last occurrence. take_last : deprecated |
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| Returns: | top_n : Series The n largest values in the Series, in sorted order |
Notes
Faster than .sort_values(ascending=False).head(n) for small nrelative to the size of the Series object.
Examples
import pandas as pd import numpy as np s = pd.Series(np.random.randn(1e6)) s.nlargest(10) # only sorts up to the N requested