title: sphinx-apidoc usage - multiple source python directories
body: <p>So I have my python source files in two different directories:-</p>
  
  <p>e.g.</p>
  
  <pre><code>~/work/myproject
  ~/.virtualenvs/myproject
  </code></pre>
  
  <p>How do I use <code>sphinx-apidoc</code> to look in both directories recursively to generate my reST files?</p>
  
  <p>Obviously, </p>
  
  <pre><code>sphinx-apidoc -o docs/source ~/work/myproject
  </code></pre>
  
  <p>works perfectly fine but when I attempt to run</p>
  
  <pre><code>sphinx-apidoc -o docs/source ~/.virtualenvs/myproject
  </code></pre>
  
  <p>again, sphinx tells me that "docs/source/modules.rst already exists, skipping" which of course is true as I have already run <code>sphinx-apidoc</code> once to generate it.</p>
  
  <p>So how do I execute it once and search in both directories?</p>