How to Monitor USB Device Connections in 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, FileNotFoundError):
        return []

def monitor_usb(interval=2):
    """Monitor USB connections and report changes."""
    previous = set(get_usb_devices())
    print("Monitoring USB devices... (Ctrl+C to stop)")
    try:
        while True:
            current = set(get_usb_devices())
            new_devices = current - previous
            removed_devices = previous - current
            if new_devices:
                for dev in new_devices:
                    print(f"[+] Connected: {dev}")
            if removed_devices:
                for dev in removed_devices:
                    print(f"[-] Disconnected: {dev}")
            previous = current
            time.sleep(interval)
    except KeyboardInterrupt:
        print("\nMonitoring stopped.")

if __name__ == "__main__":
    monitor_usb()