title: flask manage.py runserver can't pass parameter
body: <p>user manager.py runserver my flask webframework can start on <a href="http://127.0.0.1:5000" rel="nofollow">http://127.0.0.1:5000</a> but it can not access on other computer in network.
  so i need use an open IP in network.
  although i use bellow command:</p>
  
  <pre><code>manage.py runserver 192.168.49.25:8000
  </code></pre>
  
  <p>it can not run and give a error info:</p>
  
  <pre><code>manage.py: error: unrecognized arguments: 192.168.49.25:8000
  </code></pre>
  
  <p>I don't known what's wrong with it??</p>