[Python-ideas] Packages and Import
brett at python.org
Fri Feb 9 19:24:51 CET 2007
On 2/9/07, Ron Adam <rrr at ronadam.com> wrote:
> Brett Cannon wrote:
> > On 2/8/07, Ron Adam <rrr at ronadam.com> wrote:
> >> If you remove the "__main__" name, then you will still need to have some
> >> attribute for python to determine the same thing.
> > Why? There is nothing saying we can't follow most other languages and
> > just have a reserved function name that gets executed if the module is
> > executed.
> Yes, but this is where python is different from other languages. In a way,
> python's main *is* the whole module from the top to bottom. And so the
> '__main__' name is referring to the whole module and not just a function in it.
> A more specific function would be needed to get the context right. Maybe
> __script__(), or __run__().
> Or if you want to be consistent with class's, how about adding __call__() to
> modules? Then the main body of the module effectively works the same way as it
> does in a class. =)
> Hey, I think that has some cool possibilities, it makes modules callable in
> general. So if I want to run a module's __call__(), AKA main() as you call it,
> after importing I would just do...
> import module
> And it would just work. ;-)
I like this idea. Makes it very obvious. You just say "when a
specific module is specified at the command line it is called. Could
even have it take possibly sys.argv[1:] (which I think was supposed to
turn into sys.args or sys.arg or something at some point).
What do other people think?
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