title: Pyusb on windows - no backend available
body: <p>I'm trying to have my Python application interface with an NFC device via USB.
  The best option seems to be <a href="https://github.com/pyusb/pyusb" rel="noreferrer">PyUSB</a>, but I can't get it to connect to the libusb backend.
  I keep getting</p>
  <blockquote>
  <p>ValueError: No backend available</p>
  </blockquote>
  <p>I've looked at the stack trace, and found that <code>usb/backend/libusb10.py</code> (which is part of pyusb) is trying to load <code>libusb-1.0.dll</code> to use as the backend, but it can't find it. It's not that it's not in my path, it's not on my computer at all!</p>
  <p>I have installed <a href="https://sourceforge.net/projects/libusb-win32/" rel="noreferrer">libusb-win32</a>, but the resulting directory only seems to include libusb0.dll. Where is libusb-1.0.dll???!</p>
  <p>I would love to know either where to get that dll, or even a different suggestion to get PyUSB to work on Windows 7.</p>