NewName="cheese"##Please provide the name for renaming the account
command= r"whoami"

import ctypes
from subprocess import PIPE, Popen
def ecmd(command):
    class disable_file_system_redirection:
        _disable = ctypes.windll.kernel32.Wow64DisableWow64FsRedirection
        _revert = ctypes.windll.kernel32.Wow64RevertWow64FsRedirection
        def __enter__(self):
            self.old_value = ctypes.c_long()
            self.success = self._disable(ctypes.byref(self.old_value))
        def __exit__(self, type, value, traceback):
            if self.success:
                self._revert(self.old_value)

    with disable_file_system_redirection():
        

        ob= Popen(command, shell = True, stdout = PIPE, stderr = PIPE)
        print command
        res,error=ob.communicate()
        val=ob.returncode
        if val==0:
            if res:
                res = res.split('\\')[-1]
            else:
                pass
            
        command=r"wmic useraccount where name='%s' rename '%s'"%(res,NewName)
        obj = Popen(command, shell = True, stdout = PIPE, stderr = PIPE)
        out, err = obj.communicate()
        ret=obj.returncode
        if ret==0:
            if out:
                return out.strip()
            else:
                return ret
        else:
            if err:
                return err.strip()
            else:
                return ret

ecmd(command)
print "Successfully renamed User Account"
print "Please log in again to see the changes"