title: How to NOT release keypress in autopy or pyautogui?
body: <p>When we press a key (such as 'a') in a notebook, and don't release it, we will get aaaaaaaaaaaaaaaa......</p>
  
  <p>I want to simulate the key-press in python. So I've coded as follows.</p>
  
  <pre><code>import pyautogui, autopy
  
  pyautogui.keyDown('a')
  # or
  autopy.key.toggle('a')
  </code></pre>
  
  <p>Then, I get just one 'a', even I didn't release the key-press.</p>
  
  <p>How do I solve the problem?</p>