function to display notification on macOS

notify.py

import os
import sys

def notify(text, title=None, subtitle=None, sound_name=None):
    """
    Displays a notification on macOS systems using AppleScript.
    """
    if sys.platform.startswith('darwin'):
        cmd = "osascript -e 'display notification \"{}\"".format(text)

        args = []
        if title is not None: args.append('with title "{}"'.format(title))
        if subtitle is not None: args.append('subtitle "{}"'.format(subtitle))
        if sound_name is not None: args.append('sound name "{}"'.format(sound_name))
        if len(args) > 0: cmd += " " + " ".join(args)

        cmd += "'"

        print(cmd)

        os.system(cmd)