Check if Dark Mode is being used in macOS, using only python stdlib

check_macos_darkmode.py

import subprocess

def check_appearance():
    """Checks DARK (True)/LIGHT(False) mode of macos.
    https://stackoverflow.com/a/65357166"""
    cmd = 'defaults read -g AppleInterfaceStyle'
    p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE, shell=True)
    return bool(p.communicate()[0])