Udacity ML

count_words.py

def count_words(w, n):
    words = []
    s = list(set(w.split()))
    s.sort()
    
    for word in s:
        words.append((word, w.split().count(word)))
    
    words.sort(key = lambda x: (x[1]), reverse = True)
    
    return words[:n]