import wikipedia

predata = { 
            'action'        : 'review',
            'format'        : 'xml',
            'revid'         : '81798619',
            #'token' : 'adsf'
            'token' : wikipedia.getSite().getToken(getagain = True)
}   
address =wikipedia.getSite().family.api_address(wikipedia.getSite().lang)
response, data = wikipedia.getSite().postForm(address, predata=predata)
print response, data