from mechanize import Browser
import urllib2
import cookielib

LOGIN_URL = "https://en.wiktionary.org/w/index.php?title=Special:UserLogin"
USERNAME = # your username
PASSWORD = # your password

br = Browser()
br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1'), ('Accept', '*/*')]
br.set_handle_robots(False)
cj = cookielib.LWPCookieJar()
br.set_cookiejar(cj)

def login():

    br.open(LOGIN_URL)
    br.select_form(name="userlogin")
    br["wpName"] = USERNAME
    br["wpPassword"] = PASSWORD
    resp = br.submit()

def edit_page(title, new_text, comment=""):
    br.open("https://en.wiktionary.org/w/index.php?title=%s&action=edit" %title)
    br.select_form("editform")
    br['wpTextbox1'] = new_text
    br['wpSummary'] = comment
    resp = br.submit()