led_monitor -> led-monitor

config/scripts/.local/scripts/led-monitor

@@ -4,21 +4,17 @@ import glob
 import argparse
 import select
 import os
-import fcntl
 import struct
 
 # struct input_event: struct timeval (typically 2 longs), type (uint16), code (uint16), value (int32)
 # '@' ensures native byte order, size, and alignment.
-EVENT_FORMAT = '@llHHi'
+EVENT_FORMAT = "@llHHi"
 EVENT_SIZE = struct.calcsize(EVENT_FORMAT)
 
 EV_LED = 0x11
 
-LED_CODES = {
-    'numlock': 0x00,
-    'capslock': 0x01,
-    'scrolllock': 0x02
-}
+LED_CODES = {"numlock": 0x00, "capslock": 0x01, "scrolllock": 0x02}
+
 
 def get_led_state(led_type: str) -> int:
     pattern = f"/sys/class/leds/*::{led_type}/brightness"
@@ -27,24 +23,26 @@ def get_led_state(led_type: str) -> int:
         return 0
     for path in paths:
         try:
-            with open(path, 'r') as f:
+            with open(path, "r") as f:
                 if int(f.read().strip()) > 0:
                     return 1
         except (IOError, ValueError, OSError):
             continue
     return 0
 
+
 def has_led_capability(event_path: str) -> bool:
     try:
         basename = os.path.basename(event_path)
         cap_path = f"/sys/class/input/{basename}/device/capabilities/led"
         if os.path.exists(cap_path):
-            with open(cap_path, 'r') as f:
+            with open(cap_path, "r") as f:
                 return f.read().strip() != "0"
     except OSError:
         pass
     return False
 
+
 class DeviceMonitor:
     def __init__(self, target_led: str):
         self.target_led = target_led
@@ -62,7 +60,7 @@ class DeviceMonitor:
 
     def scan_devices(self) -> None:
         current_fds = set(self.active_fds.keys())
-        paths = glob.glob('/dev/input/event*')
+        paths = glob.glob("/dev/input/event*")
         found_fds = set()
 
         for path in paths:
@@ -134,9 +132,14 @@ class DeviceMonitor:
                                 events_count = len(data) // EVENT_SIZE
                                 for i in range(events_count):
                                     chunk = data[i * EVENT_SIZE : (i + 1) * EVENT_SIZE]
-                                    _, _, ev_type, ev_code, _ = struct.unpack(EVENT_FORMAT, chunk)
+                                    _, _, ev_type, ev_code, _ = struct.unpack(
+                                        EVENT_FORMAT, chunk
+                                    )
 
-                                    if ev_type == EV_LED and ev_code == self.target_led_code:
+                                    if (
+                                        ev_type == EV_LED
+                                        and ev_code == self.target_led_code
+                                    ):
                                         # Instead of acting immediately on the value, we just flag it.
                                         # This prevents state bouncing between multiple kernel devices.
                                         led_event_triggered = True
@@ -166,19 +169,22 @@ class DeviceMonitor:
                 except Exception:
                     pass
 
+
 def main():
     parser = argparse.ArgumentParser(description="Keyboard LED monitor.")
     parser.add_argument(
-        '-l', '--led',
+        "-l",
+        "--led",
         type=str,
-        default='capslock',
-        choices=['capslock', 'numlock', 'scrolllock'],
-        help="Target LED to monitor"
+        default="capslock",
+        choices=["capslock", "numlock", "scrolllock"],
+        help="Target LED to monitor",
     )
     args = parser.parse_args()
 
     monitor = DeviceMonitor(args.led)
     monitor.run()
 
+
 if __name__ == "__main__":
     main()