You do not need to get all user subscribers to count them. Use the followers_count property. For instance:.
import tweepy auth = tweepy.OAuthHandler(..., ...) auth.set_access_token(..., ...) api = tweepy.API(auth) for user in tweepy.Cursor(api.followers, screen_name="twitter").items(): print user.screen_name, user.followers_count
Print
... pizzerialoso 0 Mario98Y 0 sumankumarjana 1 realattorneylaw 3056 JaluSeptyan 10 andhita_khanza 18 ...
Hope this helps.
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