jobmatch kephrases

def keyphrases(file,min_word,max_word,num_phrases):

    text = file
    text = text.lower()
    text = ''.join(s for s in text if ord(s)>31 and ord(s)<126)
    text = text
    text = re.sub(' +', ' ', text)
    text = text.translate(str.maketrans('', '',string.punctuation))
    text = ''.join([i for i in text if not i.isdigit()])
    r = Rake(min_length = min_word, max_length = max_word)
    r.extract_keywords_from_text(text)
    phrases = r.get_ranked_phrases()
    
    if num_phrases < len(phrases):
        phrases = phrases[0:num_phrases]
        
    return phrases