CODEWITHSUNDEEP
python
root
root

Reputation: 123

How to control a specific USB port in windows with python?

I'm need to control a certain USB port in windows. I am working on a projet to automate Testcases.

Problem: In some tests you need to plug-in and out the USB pendrive to run the test 200 times for example.

Solution: Write a python program and integrate it in the tests to emulate this process of plug-in and out of a USB.

i have found this code below but "subprocess" doesn't have run reference

import subprocess
# Fetches the list of all usb devices:
result = subprocess.run(['devcon', 'hwids', '=usb'], 
    capture_output=True, text=True)

# ... add code to parse the result and get the hwid of the device you want ...

subprocess.run(['devcon', 'disable', parsed_hwid]) # to disable
subprocess.run(['devcon', 'enable', parsed_hwid]) # to enable

Write a python program and integrate it in the tests to emulate this process of plug-in and out of a USB.

Upvotes: 3

Views: 7429

Answers (2)

root
root

Reputation: 123

Well this is the solution i was able to use and it is working fine with me.

import subprocess

# find all devices command
Find_command = 'C:/Windows/SysWOW64/devcon.exe find *'

#list HW ids of devices
hwIds_command = 'C:/devcon.exe hwids *'

#Enable
Enable_command = 'C:/devcon.exe enable *PID_1016'

#Disable
Disable_command = 'C:/devcon.exe disable *mouse*'

#Find Device
Find_SpecificDevice_command = 'C:/devcon.exe find *PID_1016 '
find= True
try:
    if find:
        result = subprocess.check_output(Find_SpecificDevice_command,shell=True ,stderr=subprocess.STDOUT)
        print(result)
except subprocess.CalledProcessError as e:
    raise RuntimeError("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))

If you have any questions regarding the solution feel free to ask.

Upvotes: 1

Dan D.
Dan D.

Reputation: 74685

subprocess.run is the replacement for subprocess.call that has different arguments so they had to give it a new name. But as in this case the code requires none of the new features you can just replace subprocess.run with subprocess.call.

And in the case of subprocess.run with the option capture_output that can be replaced with subprocess.check_output.

Upvotes: 1

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