Prevent windows from powering off screen #windows

no_sleep_display.py

#!/usr/bin/env python3

import ctypes
import signal
import threading

if __name__ == "__main__":
    SetThreadExecutionState = ctypes.windll.kernel32.SetThreadExecutionState
    SetThreadExecutionState.argtypes = [ctypes.c_uint32]

    # https://bugs.python.org/issue35935#msg335056
    signal.signal(signal.SIGINT, signal.SIG_DFL)
    signal.signal(signal.SIGBREAK, signal.SIG_DFL)
    try:
        # Replace with 0x80000003 to also reset user idle timer.
        # Then this prevents device from entering deep power saving or hibernate.
        state = 0x80000002
        SetThreadExecutionState(state)
        exit = threading.Event()
        while not exit.is_set():
            exit.wait()
    except KeyboardInterrupt:
        pass
    finally:
        SetThreadExecutionState(state)