def sentence(
        self, nb_words: int = 6, variable_nb_words: bool = True, ext_word_list: Optional[Sequence[str]] = None
    ) -> str:
        """Generate a sentence.

        The ``nb_words`` argument controls how many words the sentence will
        contain, and setting ``variable_nb_words`` to ``False`` will generate
        the exact amount, while setting it to ``True`` (default) will generate
        a random amount (+/-40%, minimum of 1) using |randomize_nb_elements|.

        Under the hood, |words| is used to generate the words, so the argument
        ``ext_word_list`` works in the same way here as it would in that method.

        :sample: nb_words=10
        :sample: nb_words=10, variable_nb_words=False
        :sample: nb_words=10, ext_word_list=['abc', 'def', 'ghi', 'jkl']
        :sample: nb_words=10, variable_nb_words=True,
                 ext_word_list=['abc', 'def', 'ghi', 'jkl']
        """
        if nb_words <= 0:
            return ""

        if variable_nb_words:
            nb_words = self.randomize_nb_elements(nb_words, min=1)

        word_list = self.get_words_list(ext_word_list=ext_word_list)
        words = list(self.words(nb=nb_words, ext_word_list=word_list))
        words[0] = words[0].title()

        return self.word_connector.join(words) + self.sentence_punctuation
Generate a sentence.

        The ``nb_words`` argument controls how many words the sentence will
        contain, and setting ``variable_nb_words`` to ``False`` will generate
        the exact amount, while setting it to ``True`` (default) will generate
        a random amount (+/-40%, minimum of 1) using |randomize_nb_elements|.

        Under the hood, |words| is used to generate the words, so the argument
        ``ext_word_list`` works in the same way here as it would in that method.

        :sample: nb_words=10
        :sample: nb_words=10, variable_nb_words=False
        :sample: nb_words=10, ext_word_list=['abc', 'def', 'ghi', 'jkl']
        :sample: nb_words=10, variable_nb_words=True,
                 ext_word_list=['abc', 'def', 'ghi', 'jkl']
        
faker/providers/lorem/__init__.py