def coleman_liau_index(n_chars, n_words, n_sents):
    """https://en.wikipedia.org/wiki/Coleman%E2%80%93Liau_index"""
    return 5.879851 * (n_chars / n_words) - 29.587280 * (n_sents / n_words) - 15.800804
dataset/ETHPy150Open chartbeat-labs/textacy/textacy/text_stats.py/coleman_liau_index/original