shared.py

import json

def get_hashtags(filename):
    fh = open(filename)
    tweets = json.load(fh)
    hashtags = set()
    for tweet in tweets:
        if tweet['date'].startswith('2019'):
            for hashtag in tweet['hashtags']:
                hashtags.add(hashtag)
    return hashtags

aoc = get_hashtags('aoc.json')
trump = get_hashtags('trump.json')
shared = aoc.intersection(trump)

print("@AOC used {} hashtags in 2019.".format(len(aoc)))
print("@realDonaldTrump used {} hashtags in 2019.".format(len(trump)))
print("They both used these hashtags {}".format(shared))