30 lines
911 B
Python
30 lines
911 B
Python
from __future__ import annotations
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from typing import Generic
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from narwhals.typing import SeriesT
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class SeriesCatNamespace(Generic[SeriesT]):
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def __init__(self, series: SeriesT) -> None:
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self._narwhals_series = series
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def get_categories(self) -> SeriesT:
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"""Get unique categories from column.
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Returns:
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A new Series containing the unique categories.
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Examples:
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>>> import pandas as pd
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>>> import narwhals as nw
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>>> s_native = pd.Series(["apple", "mango", "mango"], dtype="category")
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>>> s = nw.from_native(s_native, series_only=True)
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>>> s.cat.get_categories().to_native()
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0 apple
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1 mango
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dtype: object
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"""
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return self._narwhals_series._with_compliant(
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self._narwhals_series._compliant_series.cat.get_categories()
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)
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