#!/usr/bin/python

import requests

url = 'https://mediawiki.org/w/api.php'

# Retrieve login token first

PARAMS_0 = {
    'action': 'query',
    'meta': 'tokens',
    'type': 'createaccount',
    'format': 'json',
    }

response = requests.request('GET', url, params=PARAMS_0)
DATA = response.json()

CREATE_ACCOUNT_TOKEN = DATA['query']['tokens']['createaccounttoken']

print CREATE_ACCOUNT_TOKEN

params_1 = {
    'action': 'createaccount',
    'createreturnurl': 'http://example.com/',
    'createtoken': CREATE_ACCOUNT_TOKEN,
    'username': 'Bob',
    'password': 'ExamplePassword',
    'retype': 'ExamplePassword',
    'email': 'bob@example.com',
    'realname': 'Robert',
    'format': 'json',
    }

response = requests.post('https://www.mediawiki.org/w/api.php',
                         data=params_1)
print response.text