[Python-ideas] Simpler namespace packages

Alex Light scialexlight at gmail.com
Tue Jun 21 03:24:27 CEST 2011


Sorry mixed up first and second examples

-alex
 On Jun 20, 2011 12:24 PM, "Mike Graham" <mikegraham at gmail.com> wrote:
> On Mon, Jun 20, 2011 at 10:26 AM, Alex Light <scialexlight at gmail.com>
wrote:
>> On Mon, Jun 20, 2011 at 10:03 AM, Mike Graham <mikegraham at gmail.com>
wrote:
>>>
>>> Would it be possible to allow a more simple definition, for example
>>> putting the dot itself in the filename? Where these would be similar?
>>>
>>> site-packages/
>>>    foo/
>>>        __init__.py
>>>    foo.bar.py
>>>    foo.baz/
>>>        __init__.py
>>>        qux.py
>>>     foo.spam.eggs.py
>>>
>>> and
>>>
>>> site-packages/
>>>    foo/
>>>        __init__.py
>>>        bar.py
>>>        baz/
>>>            __init__.py
>>>            qux.py
>>>        spam/
>>>            __init__.py #empty
>>>            eggs.py
>>
>> I fail to see how the first example is clearer than the second. Indeed
>> the opposite seems to be true.
>> What i think you need to understand is that the name of the module is the
>> same as the path to it.
>> IMO the current system emphasizes that very strongly and this proposal
would
>> only make the
>> concept less clear.
>> --Alex
>
> The first example ISN'T clearer than the second. I think the second is
> more easily understood to be sure. The first example, I'm saying, may
> be clearer than other implementations of namespace packages, not
> clearer than a normal package.
>
> A namespace package is one where the top level(s) aren't for a normal
> package. If foo.bar and foo.baz and foo.qux were distributed
> completely separately, foo would be a namespace package.
>
> Currently, a namespace package might look like
>
> site-packages/
> foo/ # No __init__.py in foo
> bar/
> __init__.py
> spam.py
> foo.bar-1.2.3-py2.7-nspkg.pth # A pth file to tell Python how to
> import the package
> foo.bar-1.2.3-py2.7.egg-info/
> namespace_packages.txt # This would say "foo" in it
> ....other stuff
>
> and PEP382 tries to improve the situation a bit. I'm hoping we can
> come up with something that is easily understood.
>
>
> Mike
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