title: python-telegram-bot - sending message
body: <p>I'm trying to send a message using Python-Telegram-Bot without waiting for a user response but can't get it to work and I get no errors.</p>
  <pre><code>Code:
  def echo(context):
      context.bot.send_message(chat_id=-516017547, text='test') 
      #chat_id is the group id I found by going to:
      #https://api.telegram.org/bot&lt;MY_API&gt;/getUpdates
  
  def main():
      updater = Updater(API)
      dp = updater.dispatcher
  
      echo_handler = MessageHandler(Filters.text &amp; (~Filters.command), echo)
      dp.add_handler(echo_handler)
  
      updater.start_polling()
      updater.idle()
  
  main()
  </code></pre>