title: Free the opened ctypes library in Python
body: <p>I was wondering that, if I opened my own dll library compiled from custom c code, like this:</p>
  
  <pre><code>import ctypes
  my_lib = ctypes.cdll.LoadLibrary('./my_dll.dll')
  my_func = my_lib.my_func
  # Stuff I want to do with func()
  </code></pre>
  
  <p>Do I need to close the my_lib object after use, like a file object? Will doing this make the code cleaner, more efficient, and more "pythonic"?</p>
  
  <p>Thanks!</p>