import requests
from pprint import pprint

url = "https://api.data.gov.hk/v1/carpark-info-vacancy"

response = requests.get(url)
js_result = response.json()['results']

js_row = js_result[0]
pprint(js_row)
pprint("length of json: "+str(len(js_result)))

def get_url_image(js_row):
  return None if js_row.get('renditionUrls', {}).get("square") == None else js_row['renditionUrls']['square']


pprint(get_url_image(js_row))