most_common_string_words.py

from collections import Counter

class ArticleHashtags:
    def __init__(self, text):
        self.text = text

    def get_most_common_words(self, n=5, text_min_lenth=5):
        """
        Returns 5 most common words in string.
        """

        words = list(
            filter(
                None,
                [x.strip().lower().strip(',"') for x in self.text.split() if len(x) >= text_min_lenth if x]
            )
        )

        most_common_words = dict(Counter(words).most_common(n))

        return list(map(lambda x: '#' + x, most_common_words))