title: PyQt5 stubs files
body: <p>I've just started a PyQt5 project that is currently running in a virtualenv.
  PyQt5 was installed using a classic <em>pip install pyqt5</em>.</p>
  
  <p>I want to type check my application using mypy.
  But when I run it, I get an error telling me that there are no stubs file for PyQt5.</p>
  
  <pre><code>myapp/__main__.py:3: error: No library stub file for module 'PyQt5.QtWidgets
  </code></pre>
  
  <p>I've checked the site-package of my virtualenv, and indeed, there aren't any <em>.pyi</em> file in it.</p>
  
  <p>Checking the <a href="http://pyqt.sourceforge.net/Docs/PyQt5/installation.html#cmdoption-configure-py-no-stubs" rel="noreferrer">documentation</a>, I see that if compiled, stub files can be generated (and could at least exists beginning with PyQt5.6, I'm using 5.10).</p>
  
  <p>Is there a way to obtain those file without the need to manually compile the library ?</p>