gistfile1.py

import requests
# http://docs.python-requests.org/en/latest/

headers = {'content-type': 'application/json'}
url = 'http://apps.testrunner.aeon-rc.dev.ebay.com/api/testrunner_v1/log/'
payload = {'a': 'b'}

r = requests.post(url,
                  data=json.dumps(payload),
                  headers=headers)
print r.text