Find usb device of specified idVendor and idProduct in Python with PyUSB.

This simple example show how to find the USB device with specified idVendor and idProduct in Python with PyUSB, and print it's details.

- To install PyUSB, refer to the post "Download and Install PyUSB for Python 2 and 3".

- To know the Vendor ID and Product ID of your device, refer the post "Get idVendor and idProduct of your Arduino/USB devices".

- Enter the code, replace with your idVendor and idProduct. It run on both Python 2 and 3.

import usb.core
import usb.util

# find Arduino Uno
dev = usb.core.find(idVendor=0x2341, idProduct=0x0043)

# was it found?
if dev is None:
    raise ValueError('Device not found')

print(repr(dev))
print('VendorID  = 0x%04x'%dev.idVendor)
print('ProductID = 0x%04x'%dev.idProduct)
print
print(dev)

Example output of Arduino Uno rev 3, with idVendor=2341, idProduct=0043

<DEVICE ID 2341:0043 on Bus 002 Address 010>
VendorID  = 0x2341
ProductID = 0x0043
DEVICE ID 2341:0043 on Bus 002 Address 010 =================
 bLength                :   0x12 (18 bytes)
 bDescriptorType        :    0x1 Device
 bcdUSB                 :  0x110 USB 1.1
 bDeviceClass           :    0x2 Communications Device
 bDeviceSubClass        :    0x0
 bDeviceProtocol        :    0x0
 bMaxPacketSize0        :    0x8 (8 bytes)
 idVendor               : 0x2341
 idProduct              : 0x0043
 bcdDevice              :    0x1 Device 0.01
 iManufacturer          :    0x1 Error Accessing String
 iProduct               :    0x2 Error Accessing String
 iSerialNumber          :   0xdc Error Accessing String
 bNumConfigurations     :    0x1
  CONFIGURATION 1: 100 mA ==================================
   bLength              :    0x9 (9 bytes)
   bDescriptorType      :    0x2 Configuration
   wTotalLength         :   0x3e (62 bytes)
   bNumInterfaces       :    0x2
   bConfigurationValue  :    0x1
   iConfiguration       :    0x0 
   bmAttributes         :   0xc0 Self Powered
   bMaxPower            :   0x32 (100 mA)
    INTERFACE 0: CDC Communication =========================
     bLength            :    0x9 (9 bytes)
     bDescriptorType    :    0x4 Interface
     bInterfaceNumber   :    0x0
     bAlternateSetting  :    0x0
     bNumEndpoints      :    0x1
     bInterfaceClass    :    0x2 CDC Communication
     bInterfaceSubClass :    0x2
     bInterfaceProtocol :    0x1
     iInterface         :    0x0 
      ENDPOINT 0x82: Interrupt IN ==========================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x82 IN
       bmAttributes     :    0x3 Interrupt
       wMaxPacketSize   :    0x8 (8 bytes)
       bInterval        :   0xff
    INTERFACE 1: CDC Data ==================================
     bLength            :    0x9 (9 bytes)
     bDescriptorType    :    0x4 Interface
     bInterfaceNumber   :    0x1
     bAlternateSetting  :    0x0
     bNumEndpoints      :    0x2
     bInterfaceClass    :    0xa CDC Data
     bInterfaceSubClass :    0x0
     bInterfaceProtocol :    0x0
     iInterface         :    0x0 
      ENDPOINT 0x4: Bulk OUT ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :    0x4 OUT
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x1
      ENDPOINT 0x83: Bulk IN ===============================
       bLength          :    0x7 (7 bytes)
       bDescriptorType  :    0x5 Endpoint
       bEndpointAddress :   0x83 IN
       bmAttributes     :    0x2 Bulk
       wMaxPacketSize   :   0x40 (64 bytes)
       bInterval        :    0x1