battery.py

# Python 3.6.6 on macOS Mojave 10.14.1

import pync
import psutil
from time import sleep


def check_battery(low, high):
    # 獲得電池資訊
    battery = psutil.sensors_battery()
    charging = battery.power_plugged
    percent = battery.percent
    message = '目前電池電量為 ' + str(percent) + '%'

    # 判斷是否需要連接或移除電源線
    if percent <= low and not charging:
        return {'title': '電量不足', 'message': message}
    elif percent >= high and charging:
        return {'title': '電量充足', 'message': message}


while True:
    alert = check_battery(40, 80)
    if alert:
        pync.notify(alert['message'], title=alert['title'], sound='default')
    sleep(60)