pipeline/nltk/stem/api.py

# Natural Language Toolkit: Stemmer Interface
#
# Copyright (C) 2001-2023 NLTK Project
# Author: Trevor Cohn <[email protected]>
#         Edward Loper <[email protected]>
#         Steven Bird <[email protected]>
# URL: <https://www.nltk.org/>
# For license information, see LICENSE.TXT

from abc import ABCMeta, abstractmethod


class StemmerI(metaclass=ABCMeta):
    """
    A processing interface for removing morphological affixes from
    words.  This process is known as stemming.

    """

    @abstractmethod
    def stem(self, token):
        """
        Strip affixes from the token and return the stem.

        :param token: The token that should be stemmed.
        :type token: str
        """