title: Python select epoll in Gevent
body: <p>I'm working on GPIO stuff in Python, need to register the fd on epoll, since gevent monkey patched the python select library, there will not be select.epoll if monkey.patch_all(select=True), so here comes two questions:</p>
  
  <ol>
  <li>Will be consequence that the monkey.patch_all(select=False)?</li>
  <li>Or does Gevent provide its own epoll register stuff?</li>
  </ol>
  
  <p>Thank you in advance. </p>