On Sun, Aug 20, 2000 at 11:37:46PM -0500, Guido van Rossum wrote:
> > > Summary: Allow all assignment expressions after 'import something as'
> -1. Hypergeneralization.
I don't think it's hypergeneralization. In fact, people might expect it[*],
if we claim that the 'import-as' syntax is a shortcut for the current
practice of
import somemod
sspam = somemod.somesubmod.spam
(or similar constructs.) However, I realize you're under a lot of pressure
to Pronounce a number of things now that you're back, and we can always
change this later (if you change your mind.) I dare to predict, though, that
we'll see questions about why this isn't generalized, on c.l.py.
(*] I know 'people might expect it' and 'hypergeneralization' aren't
mutually exclusive, but you know what I mean.)
> By the way, notice that
> import foo.bar
> places 'foo' in the current namespace, after ensuring that 'foo.bar'
> is defined.
Oh, I noticed ;) We had a small thread about that, this weekend. The subject
was something like ''import as'' or so.
> What should
> import foo.bar as spam
> assign to spam? I hope foo.bar, not foo.
The original patch assigned foo to spam, not foo.bar. Why ? Well, all the
patch did was use a different name for the STORE operation that follows an
IMPORT_NAME. To elaborate, 'import foo.bar' does this:
IMPORT_NAME "foo.bar"
<resulting object, 'foo', is pushed on the stack>
STORE_NAME "foo"
and all the patch did was replace the "foo" in STORE_NAME with the name
given in the "as" clause.
> I note that the CVS version doesn't support this latter syntax at all;
> it should be fixed, even though the same effect can be has with
> from foo import bar as spam
Well, "general consensus" (where the general was a three-headed beast, see
the thread I mentioned) prompted me to make it illegal for now. At least
noone is going to rely on it just yet ;) Making it work as you suggest
requires a separate approach, though. I'll think about how to do it best.
--
Thomas Wouters <thomas@xs4all.net>
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