On 9/19/2018 9:25 PM, Barry Warsaw wrote:
On Sep 19, 2018, at 20:34, Gregory P. Smith <g...@krypto.org> wrote:

There's ongoing work to rewrite zipimport.c in python using zipfile itself

Great timing!  Serhiy’s rewrite of zipimport in Python has just landed in 3.8, 
although it doesn’t use zipfile.  What’s in git now is a pretty straightforward 
translation from the original C, so it could use some clean ups (and I think 
Serhiy is planning that).  So the problem you describe should be easier to fix 
now in 3.8.  It would be interesting to see if we can squeeze more performance 
and better behavior out of it now that it’s in Python.

You don't hear "better performance" and "now that it's in Python" together very often! Although I agree with your point: it's like how we tried and failed to make progress on namespace packages when import was written in C, and then once it was in Python it was easy to add the functionality.

Eric

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