[Python-Dev] Re: [Fwd: Discussion: Introducing new operators formatrix computation]

[Fredrik Lundh]

Huaiyu Zhu wrote:
> The only real danger is=20
>=20
> 3. + a
> 3 .+ a
>=20
> But in this case pointwise operation does not make sense.=20

really?  what if "a" is a froob?

    class froob:
        def __add__(self, other):
            return other + 1.0
        def __dotadd__(self, other):
            return other + 1.0

    >>> a =3D froob()
    >>> print 3+a()
    4.0
    >>> print 3.+a()
    SyntaxError: sorry, that doesn't make sense.  try inserting a space.
    >>> print 3. + a()
    4.0
    >>> print 3.0+a()
    4.0

</F>