How to use the textstat.textstat.textstat.sentence_count function in textstat

def _get_detailed_stats(no_code_text):
    """
    Returns detailed stats on text
    :param no_code_text: String to analyse
    :return: list of details
    """
    results = []
    group_by = 'Detailed Text Statistics'
    tb = TextBlob(no_code_text)
    # Spell check here...it's very slow
    results.append(TextFeature('Number of sentences', textstat.sentence_count(no_code_text), group_by))
    results.append(TextFeature('Number of sentences (again)', len(tb.sentences), group_by))
    results.append(TextFeature('Number of words', len(tb.words), group_by))
    results.append(TextFeature('Sentiment Polarity', tb.sentiment.polarity, group_by))
    results.append(TextFeature('Sentiment Subjectivity', tb.sentiment.subjectivity, group_by))
    results.append(TextFeature('Detected Language', tb.detect_language(), group_by))
    results.append(TextFeature('Number of important phrases', len(tb.noun_phrases), group_by))
    results.append(TextFeature('Number of word bi-grams', len(tb.ngrams(2)), group_by))
    results.append(TextFeature('Number of word tri-grams', len(tb.ngrams(3)), group_by))
    results.append(TextFeature('Number of word 4-grams', len(tb.ngrams(4)), group_by))
    return results