Python return "None" prevents following for loop

I'm using Tweepy to stream tweets. I'm trying to filter out retweeted content using the retweeted_status identifier in the json file. I want the for loop to execute after the empty return statement of the if statement on the line before it, but it doesn't seem to work- nothing gets printed out. The script seems to stop after the if statement:

class StreamListener(tweepy.StreamListener):


        def on_status(self, status):
                #these variable split out the data from the outputted json
                text = status.text
                name = status.user.screen_name
                id_str = status.id_str

#This if argument ensures that if there is retweeted status then None is returned
                if hasattr (status, 'retweeted_status'):
                        return
                for url in status.entities['urls']:

                        print (text, name, (url['expanded_url']), file=open("results.txt", "a"))