def change_user_name(self, usrname, newusrname, callback=None):
        '''
        Change user name.
        '''
        params = {'usrName': usrname,
                  'newUsrName': newusrname,
                 }
        return self.execute_command('changeUserName', params, callback=callback)
def change_user_name ( self , usrname , newusrname , callback = None ) : params = { 'usrName' : usrname , 'newUsrName' : newusrname , } return self . execute_command ( 'changeUserName' , params , callback = callback )
Change user name.