main.py

import os
import requests
import time
import csv

url="https://cloud.timeedit.net/chalmers/web/public/ri1Yf3ygZ05ZZfQ1X75v5Yn75Z45x4Z6Qg080YQQ6176bQo0QyX.csv"

while True:
    with requests.Session() as s:
        download = s.get(url)
        decoded_content = download.content.decode('utf-8')
        cr = csv.reader(decoded_content.splitlines(), delimiter=',')
        my_list = list(cr)

    if time.strftime("%Y-%m-%d") == my_list[4][0]:
        a=int(time.strftime("%H"))
        b=int(time.strftime("%M"))
        c = int(my_list[4][1][0:2])
        d = (int(my_list[4][1][3:5])-15)
        timeDone = c*60+d+15
        if d < 0:
            c = c - 1
        d = d % 60

        timeNow = a*60+b
        timeLesson = c*60+d
        
        if timeLesson - timeNow < 0 and timeNow - timeDone < 0:
            cmd = 'notify-send -u normal "' + my_list[4][4] + ' börjar snart"'
            os.system(cmd)
    time.sleep(600)