get video sources from /sys/class/video4linux/

from pathlib import Path


def get_video():
    result = []
    path = Path('/sys/class/video4linux/')
    for video in path.glob('video*'):
        index = int((video / 'index').read_text())
        name = (video / 'name').read_text().strip()
        result.append((index, name))
    return sorted(result)