title: How to configure application name when running dev_appserver.py?
body: <p>I used to configure the application name in app.yaml. But I just re-read the latest docs, and they say:</p>
  
  <blockquote>
    <p>The recommended approach is to remove the application element from your app.yaml file and instead, use a command-line flag to specify your application ID:</p>
    
    <p>To use the gcloud app deploy command, you must specify the --project flag:</p>
    
    <p><code>gcloud app deploy --project [YOUR_PROJECT_ID]</code></p>
    
    <p>To use the appcfg.py update command, you specify the -A flag:</p>
    
    <p><code>appcfg.py update -A [YOUR_PROJECT_ID]</code></p>
  </blockquote>
  
  <p>But what about <code>dev_appserver.py</code>? How do I configure it with the project name?</p>