This is not a vague wish at all. The implementation is at odds with the
documentation, and in fact nobody has been able to explain just how
Python works or should work. Read msg24424 again - it all boils down to
explaining why the variable x in

    def f(x): return eval('x')

and

    def f(x): return eval('lambda: x')

should be interpreted differently, whereas in

    def f(x): return x

and
    def f(x): return lambda: x

the same x is used in both cases.