I was wondering, how do you close a connection with Requests (python-requests.org)?

With httplib it's HTTPConnection.close(), but how do I do the same with Requests?

Code is below:

    r = requests.post("https://stream.twitter.com/1/statuses/filter.json", data={'track':toTrack}, auth=('username', 'passwd'))

    for line in r.iter_lines():
        if line:
            self.mongo['db'].tweets.insert(json.loads(line))

Thanks in advance.