index.py

from collections import Counter
import tweepy

consumer_key = ''
consumer_secret = ''
access_token = ''
access_token_secret = ''

auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
api = tweepy.API(auth, wait_on_rate_limit=True)

tweets = []

for tweet in tweepy.Cursor(api.search, q="4fursuitcrushes1pic", count=100, tweet_mode='extended', include_entities=True).items():
    tweets.append(tweet)

base_tweets = [t for t in tweets if not hasattr(t, 'retweeted_status')]

c = Counter()

for tweet in base_tweets:
    c.update([user['screen_name'] for user in tweet.entities['user_mentions']])

with open('4fursuitcrushes1pic.txt', 'w') as f:
    for entry in c.most_common():
        f.write(f'@{entry[0]}: {entry[1]}\n')