from urllib2 import Request, urlopen

values = """
  {
    "image": "http://media.kairos.com/kairos-elizabeth.jpg",
    "selector": "ROLL"
  }
"""

headers = {
  'Content-Type': 'application/json',
  'app_id': '3b54027c ',
  'app_key': 'a22a5d35b485afcc2157ae7b2ef6cbdc'
}
request = Request('https://api.kairos.com/detect', data=values, headers=headers)

response_body = urlopen(request).read()
print response_body