[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Fred L. Drake, Jr.]

Change by Fred L. Drake, Jr. :


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nosy: +fdrake

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Eric Snow]

Changes by Eric Snow :


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nosy: +eric.snow

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Nick Coghlan]

Nick Coghlan added the comment:

Petr, this could be an interesting issue to take a look at from the point of 
view of the builtin and extension module import changes in Python 3.5.

Given the extent of the import system changes across 3.3/4/5, it's even 
conceivable we may have made this work somewhere along the line. In that case 
we'd still need a new regression test to ensure it keeps working - we didn't 
even have a regression test to ensure extension module imports from inside a 
package worked, so we definitely don't have one for builtin submodules.

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nosy: +encukou

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[STINNER Victor]

Changes by STINNER Victor victor.stin...@gmail.com:


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nosy: +haypo

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Brett Cannon]

Changes by Brett Cannon br...@python.org:


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versions: +Python 3.4 -Python 3.3

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com:


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nosy: +Arfrever

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Terry J. Reedy]

Terry J. Reedy tjre...@udel.edu added the comment:

I believe this is covered by the PEP3003 3.2 change moratorium.

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nosy: +terry.reedy
versions: +Python 3.3 -Python 3.2

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Brett Cannon]

Brett Cannon br...@python.org added the comment:

Import is explicitly exempt from the moratorium. But since the moratorium 
expires starting with Python 3.3 it really doesn't matter since this change 
will not go into 3.2.

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Skip Montanaro]

Changes by Skip Montanaro s...@pobox.com:


--
nosy:  -skip.montanaro

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Nick Coghlan]

Nick Coghlan ncogh...@gmail.com added the comment:

OK, reassessing with brain fully engaged this time: the current patch is 
incorrect, and this request is more complicated than one might initially think 
:)

It appears that since the patch was originally tried out only on Windows, a 
Modules/Setup based system based system like mine can't even build a patched 
tree. The current incarnation of the Modules/makesetup script won't allow the 
use of a dotted name for a module named in Modules/Setup.

Anyway, I'm uploading a more fleshed out test case which explicitly details 
some of the module namespace invariants that built-in packages would need to 
support (and changing the issue type and title accordingly).

Even beyond these stricter tests, pkgutil and importlib would need to be 
checked to make sure they also support the new behaviour. 

Since I can't build the patch as it currently stands, I don't know how well it 
actually fairs against the stronger set of invariants. However, just looking at 
the patch I'm pretty confident that it doesn't include the necessary work to 
make sure that the parent package actually looks like a package from the 
interpreter's point of view.

--
components:  -Build
stage:  - needs patch
title: Allow importing built-in submodules - Allow built-in packages and 
submodules as well as top-level modules
type: behavior - feature request
versions:  -Python 2.6, Python 2.7, Python 3.1
Added file: http://bugs.python.org/file17126/test_builtin_submodule.py

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Nick Coghlan]

Changes by Nick Coghlan ncogh...@gmail.com:


--
stage: needs patch - 

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[issue1644818] Allow built-in packages and submodules as well as top-level modules

[Nick Coghlan]

Nick Coghlan ncogh...@gmail.com added the comment:

Unassigning - this idea needs a lot more specification work to be done before 
actually implementing it becomes a good idea.

(e.g. IronPython and Jython should be looked at to see how they handle the 
naming schemes in the standard libraries for their respective runtime 
environments)

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assignee: ncoghlan - 

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