Get all monitors with x11 lib

monitors_x11.py

from Xlib import display
from Xlib.ext import randr


def find_mode(id, modes):
    for mode in modes:
        if id == mode.id:
            return f'{mode.width}x{mode.height}'


def get_display_info():
    d = display.Display(':0')
    screen_count = d.screen_count()
    default_screen = d.get_default_screen()
    result = []
    screen = 0
    info = d.screen(screen)
    window = info.root

    res = randr.get_screen_resources(window)
    for output in res.outputs:
        params = d.xrandr_get_output_info(output, res.config_timestamp)
        if not params.crtc:
            continue
        crtc = d.xrandr_get_crtc_info(params.crtc, res.config_timestamp)
        modes = {find_mode(mode, res.modes) for mode in params.modes}
        result.append({'name': params.name, 'resolution': f'{crtc.width}x{crtc.height}', 'available_resolutions': list(modes)})


    return result


print(get_display_info())