pythonpython-3.xlibusbpyusb
Pyusb can't find a device while libusb can
I have an ACR38 smartcard reader connected to my computer and I can see its Vendor ID and Product ID using libusb-Win32 inf wizard :
But I can't communicate with it in Python 3.4.1 via pyusb-1.0.0a2 :
>>> dev = usb.core.find(idVendor=0x072F, idProduct=0x90CC)
>>> print(dev)
None
>>>
Why?!
Solution
Did you create the driver (inf file) and install it from the wizard? Does your device show up in the device manager as libusb device?
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