Module(body=[Assign(targets=[Name(id='d',
                                  ctx=Store())],
                    value=Dict(keys=[],
                               values=[])),
             Assign(targets=[Subscript(value=Name(id='d',
                                                  ctx=Load()),
                                       slice=Index(value=Str(s='__proto__')),
                                       ctx=Store())],
                    value=Str(s='testing')),
             Print(dest=None,
                   values=[Name(id='d',
                                ctx=Load())],
                   nl=True)])