title: What is the common header format of Python files?
body: <p>I came across the following header format for Python source files in a document about Python coding guidelines:</p>
  
  <pre><code>#!/usr/bin/env python
  
  """Foobar.py: Description of what foobar does."""
  
  __author__      = "Barack Obama"
  __copyright__   = "Copyright 2009, Planet Earth"
  </code></pre>
  
  <p>Is this the standard format of headers in the Python world?
  What other fields/information can I put in the header?
  Python gurus share your guidelines for good Python source headers :-)</p>