title: Slack slash command picture processing
body: <p>Facing the issue where I need to use slash commands with new <a href="https://slack.dev/bolt-python/concepts#basic" rel="nofollow noreferrer">SlackBolt</a> framework</p>
  <pre><code>from slack_bolt import App
  
  app = App()
  
  @app.command(&quot;/detection&quot;)
  def detection(ack, say, command, body):
      ack()
      
      print(command)
      print(body)
  </code></pre>
  <p>In slack channel/bot I'll use <code>/detection</code> and add the picture. How can I access the picture and do some processing in the background? Didn't find anything in the Bolt documentation. :(</p>
  <p>Thank you!</p>