Module(body=[Assign(targets=[Name(id='x',
                                  ctx=Store())],
                    value=Str(s='OK')),
             Print(dest=None,
                   values=[Subscript(value=Name(id='x',
                                                ctx=Load()),
                                     slice=Index(value=Num(n=0)),
                                     ctx=Load())],
                   nl=True)])