adds_test.py

import requests
import time

URL = 'https://www.aviationweather.gov/adds/dataserver_current/httpparam?dataSource=metars&requestType=retrieve&format=xml&stationString=kc35,kmke&hoursBeforeNow=2&mostRecentForEachStation=true&fields=flight_category,station_id,raw_text'


def test():
    success = failure = 0

    while True:
        try:
            response = requests.get(URL, timeout=10.0)
        except:
            pass

        print(response.text)
        if 'Invalid field name' in response.text:
            failure += 1
        else:
            success += 1

        total = success + failure

        print(f'\nSuccess: {success}\nFailure: {failure}\nTotal: {total}\n\n\n')

        time.sleep(60)


if __name__ == '__main__':
    test()