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How to Monitor USB Device Connections in Python

A Python utility that monitors USB device connections and disconnections by comparing output of the lsusb command at regular intervals.

usb monitoring subprocess

Python

import time
import subprocess
import os

def get_usb_devices():
    """Return list of currently connected USB devices (Linux)."""
    try:
        result = subprocess.run(['lsusb'], capture_output=True, text=True, check=True)
        return result.stdout.strip().split('\n')
    except (subprocess.CalledProcessError, F…

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