[Python-Dev] PEP 420 - dynamic path computation is missing rationale

[Eric V. Smith]

On 5/22/2012 2:37 PM, Guido van Rossum wrote:
> Okay, I've been convinced that keeping the dynamic path feature is a
> good idea. I am really looking forward to seeing the rationale added
> to the PEP -- that's pretty much the last thing on my list that made
> me hesitate. I'll leave the details of exactly how the parent path is
> referenced up to the implementation team (several good points were
> made), as long as the restriction that sys.path must be modified in
> place is lifted.

I've updated the PEP. Let me know how it looks.

I have not updated the implementation yet. I'm not exactly sure how I'm
going to convert from a path list of unknown origin to ('sys', 'path')
or ('foo', '__path__'). I'll look at it later tonight to see if it's
possible. I'm hoping it doesn't require major surgery to
importlib._bootstrap.

I still owe PEP updates for finder/loader examples and nested namespace
package examples. But I think that's all that's needed.

Eric.