import requests, json, datetime

PATH = 'https://api.data.gov.sg/v1/transport/taxi-availability?date_time=<date_time>'
query_datetime = datetime.datetime(2019, 10, 30, 0, 0, 0) # 30 oct
oct_31 = datetime.datetime(2019, 10, 31, 0, 0, 0) # 31 oct

while query_datetime < oct_31:
    query_datetime_str = query_datetime.strftime('%Y-%m-%d') + 'T' + query_datetime.strftime('%H:%M:%S')
    res = requests.get(PATH.replace('<date_time>', query_datetime_str))
    data = json.loads(res.content)

    timestamp = data['features'][0]['properties']['timestamp']

    with open(f'data/{timestamp}.json', 'w+') as f:
        f.write(res.content.decode())

    query_datetime += datetime.timedelta(seconds=30)