# Source code for textblob_de.base

    # -*- coding: utf-8 -*-
    """Extensions to Abstract base classes in ``textblob.base``"""
    from __future__ import absolute_import

    from abc import ABCMeta, abstractmethod

    from textblob.compat import with_metaclass

    # provide all base classes for ``textblob_de``
    from textblob.blob import BaseBlob
    from textblob.base import BaseNPExtractor, BaseParser
    from textblob.base import BaseSentimentAnalyzer
    from textblob.base import BaseTagger, BaseTokenizer
    from textblob.base import DISCRETE, CONTINUOUS

    # Testing phase - if found useful, this baseclass could be merged into
    # textblob.base

    ##### LEMMATIZER #####

    class BaseLemmatizer(with_metaclass(ABCMeta)):

        """Abstract base class from which all Lemmatizer classes inherit.
        Descendant classes must implement a ``lemmatize(text)`` method that returns
        a WordList of Word object with updated lemma properties.

        .. versionadded:: 0.2.3 (``textblob_de``)

        """

        @abstractmethod
        def lemmatize(self, text):
            """Return a list of (lemma, tag) tuples."""
            return