Distance between points - python

url = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=+52030-100&destinations=+50875-090&mode=bicycling&language=pt-BR&key=AIzaSyBRADWHRl0s_0eIXx7YJL9nwDsjaYGF-iU"

import requests
import json
r = requests.get(url)
a= json.loads(r.text)
print(a['rows'][0]['elements'][0]['distance']['text'])