Print next bus arrival times for a TTC stop

ttc-nextbus.py

import requests
import xml.etree.ElementTree as ET
import time

AGENCY="ttc"
STOP_ID=12345
PREDICTIONS = f"http://webservices.nextbus.com/service/publicXMLFeed?a={AGENCY}&command=predictions&stopId={STOP_ID}"

def print_next():
    xml_predictions = requests.get(PREDICTIONS)
    root = ET.fromstring(xml_predictions.text)

    upcoming = []

    for route in root:
        routeNumber = route.attrib['routeTag']
        for direction in route:
            for prediction in direction:
                upcoming.append((routeNumber, int(prediction.attrib['minutes'])))

    upcoming.sort(key=lambda x: x[1])
    print(", ".join([b[1].__str__() + "m" for b in upcoming]))

while True:
    print_next()
    time.sleep(30)