import urllib
import json

request = urlopen("http://api.exmaple.com/stuff?client_id=someid&client_secret=randomsecret")
response = request.read()
json = json.loads(response)
if json['success']:
     ob = json['response']['ob']
     print ("The current weather in Seattle is %s with a temperature of %d") % (ob['weather'].lower(), ob['tempF'])
else:
     print ("An error occurred: %s") % (json['error']['description'])
request.close()

Traceback (most recent call last):
File "thing.py", line 4, in <module>
request = urlopen("http://api.exmaple.com/stuff?client_id=someid&client_secret=randomsecret")
NameError: name 'urlopen' is not defined

from urllib.request import urlopen
req = urlopen(...)

import urllib.request
req = request.urlopen(...)

from urllib import urlopen

import urllib
import json

request  = urllib.urlopen("http://api.exmaple.com/stuff?client_id=someid&client_secret=randomsecret")
response = request.read()
json = json.loads(response)

if json['success']:
     ob = json['response']['ob']
     print ("The current weather in Seattle is %s with a temperature of %d") % (ob['weather'].lower(), ob['tempF'])

else:
     print ("An error occurred: %s") % (json['error']['description'])

request.close()