[Python-Dev] PEP 364, Transitioning to the Py3K standard library

[Barry Warsaw]

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On Mar 7, 2007, at 7:39 PM, Brett Cannon wrote:

>> I think it's important to import on demand only though.
>
> And I agree.

Cool.

>> I should
>> probably make that clear in the PEP <wink>.  IOW, "import email"
>> should not by side-effect import all sub-modules just because there's
>> a remapping involved.  This actually would be quite easy to do, but
>> it's one of the reasons why the Python 2.5 email package hack goes
>> through so much trouble.
> I am not suggesting that every rename be imported.  All I am saying is
> that a .pth file could ``import pkg.old_names`` and that old_names
> module adds the mappings, that's all.  It doesn't do anything that you
> are not proposing be done automatically.

Cool, I see.  What advantage do you see with importing the  
pkg.old_names from a .pth file rather than just including whatever is  
necessary right in pkg/__init__.py?

- -Barry

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