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pythonpyusb

Trying to generate a list of product/vendor ids using PyUSB

I am trying to generate a list of product/vendor IDs with Pyusb and I am having trouble. I found a suggestion online from orangecoat.

import sys
import usb.core
import usb.util

dev = usb.core.find(find_all=True)

if dev is None:
   raise ValueError('Device not found')

cfg = dev.get_active_configuration()

Python gives the following error though:

Traceback (most recent call last):
  File "C:/Python27/usbfinddevices.py", line 10, in <module>
    cfg = dev.get_active_configuration()
AttributeError: 'generator' object has no attribute 'get_active_configuration'

Could someone help me understand why I am getting this error? Thank you

Solution

  • Save this script

    test.py

    import usb.core
import usb.util

dev = usb.core.find(find_all=True)

# get next item from the generator
d = dev.next() 
print d.get_active_configuration()

    then, run this

    sudo python test.py

    On Windows with Python 3 you need to change line d = dev.next() to d = next(dev) (as pointed out in the comments by @gabin)