Tweepyでstreaming apiを使用した自動フォロー返し ref: http://qiita.com/naari/items/fa44a318dad81c8c627f

__init__内

self.me = self.api.me()

file0.txt

import tweepy

consumer_key    = "CONSUMER_KEY"
consumer_secret = "CONSUMER_SECRET"
access_token    = "ACCESS_TOKEN"
access_secret   = "ACCESS_TOKEN_SECRET"

class StreamListener(tweepy.StreamListener):
    def __init__(self, api):
        super().__init__(api)
        self.me = self.api.me()
    def on_event(self, event):
        if event.event == 'follow':
            if self.me.id != source_user["id"]:
                source_user = event.source
                event._api.create_friendship(source_user["id"])
                print("followed　by {} {}".format(source_user["name"], source_user["screen_name"]))

if __name__ == "__main__":
    auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
    auth.set_access_token(access_token, access_secret)
    api = tweepy.API(auth)

    stream = tweepy.Stream(auth=api.auth, listener=StreamListener(api))
    stream.userstream(_with="user")

on_event内

if self.me.id != source_user["id"]: