Flesch_Kincaid.py

def Flesch_Kincaid(text):
    sentences = text.split('.')
    avg_sentence_len = sum(len(x.split()) for x in sentences) / len(sentences)
    
    syllables = sum(list(map(lambda x: 1 if x in ["a","i","e","o","u","y"] else 0,text)))
    word_count = len(text.split(' '))
    mean_syllables_per_word = syllables/float(word_count)
    
    return (0.39 * avg_sentence_len) + (11.8 * mean_syllables_per_word) - 15.59

print('The Flesch_Kincaid grade level of Dr. Dolittle is: ' + "{0:.3g}".format(Flesch_Kincaid(text)))