<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def publish_twitter(twitter_contact, owner):
 """ Publish in twitter the dashboard """

    dashboard_url = CAULDRON_DASH_URL + "/%s" % (owner)
    tweet = "@%s your http://cauldron.io dashboard for #%s at GitHub is ready: %s. Check it out! #oscon" \
        % (twitter_contact, owner, dashboard_url)
    status = quote_plus(tweet)
    oauth = get_oauth()
    r = requests.post(url="https://api.twitter.com/1.1/statuses/update.json?status=" + status, auth=oauth)