Before revision:  In summary, the Python library presented  retrieves a plethora of information processed from Twitter (since December 2015) in terms of words, bigrams of words, and their frequencies by day for Arabic, English, Spanish, and Russian languages.
After revision:  In summary, the Python library presented retrieves a plethora of information processed from Twitter (since December 2015) in terms of words, bi-grams of words, and their frequencies by day for Arabic, English, Spanish, and Russian languages.