[Python-ideas] Allow 'import star' with namespaces

[Joao S. O. Bueno]

On Fri, May 6, 2011 at 5:12 PM, Ethan Furman <ethan at stoneleaf.us> wrote:
> Brendan Moloney wrote:
>>
>> dag.odenhall at gmail.com wrote:
>>>
>>> I like this idea, except it's inconsistent with from-import-star, the
>>> latter which does *not* get you sub-packages or modules.
>>
>> Georg Brandl [g.brandl at gmx.net] wrote:
>>>
>>> And that's for a reason: it's not easy (I think it's even impossible,
>>> because
>>> for example individual submodules can change __path__) to determine all
>>> importable submodules of a package.
>>
>>> So ``import pkg.*`` would not have any behavior other than ``import
>>> pkg``.
>>
>> When I said all _public_ sub-packages and modules I was referring to those
>
>> listed in the  __all__ attribute of 'pkg'.  Thus it would behave in the
>> exact
>> same way as from-import-star except you don't pollute the current
>> namespace.
>
>
> I'm not catching the vision -- could you put together a short example that
> would illustrate?

The idea is to be able to do operate witha  single import when
submodules would have to be
implicited imported - like xml.etree.ElementTree :

[gwidion at powerpuff ~]$ python
Python 2.6.1 (r261:67515, Apr 12 2009, 04:14:16)
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import xml
>>> xml.etree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'etree'
>>> import xml.etree
>>> xml.etree.ElementTree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'ElementTree'
>>> import xml.etree.ElementTree
>>> xml.etree.ElementTree
<module 'xml.etree.ElementTree' from
'/usr/lib64/python2.6/xml/etree/ElementTree.pyc'>

>
> ~Ethan~
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