[Python-Dev] Possible major bug with zipimport on Windows in Python 3.3.4

Georg Brandl g.brandl at gmx.net
Sun Feb 16 09:19:33 CET 2014

Am 15.02.2014 23:19, schrieb Paul Moore:
> On 13 February 2014 20:58, Paul Moore <p.f.moore at gmail.com> wrote:
>> On 13 February 2014 20:54, Donald Stufft <donald at stufft.io> wrote:
>>> On Feb 13, 2014, at 3:53 PM, Paul Moore <p.f.moore at gmail.com> wrote:
>>>> Can someone please take a look at http://bugs.python.org/issue20621
>>>> for me? It appears that there is a significant problem with zipimport
>>>> in 3.3.4. It's causing breakage in virtualenv but I've isolated the
>>>> issue to what I think is Python itself.
>>>> Basically, until this bug is fixed, virtualenv won't work on Windows
>>>> with Python 3.3.4, as far as I can tell.
>>> Does it affect 3.4?
>> Just checked that. No, it's not an issue in 3.4rc0. Nor is it in
>> 3.3.3, so it's a regression in the 3.3 series only.
> OK, this appears to be a serious regression that breaks virtualenv.
> Steve Dower suggested a workaround on the tracker, but I don't think
> that can be made to work in the case of virtualenv (for reasons not
> worth explaining now, ask me if you want the details though).
> Given where we are, what is the way forward here? I'm not entirely
> sure what I should be saying to the user who reported the bug in
> virtualenv. I think I'll recommend downgrading to 3.3.3 for now, but
> it would be good to be able to give an idea of what the longer term
> solution is likely to be.

As soon as a patch has been provided and tested, I will make a schedule
for 3.3.5 including the fix.  Until then, using 3.3.3 is probably the
best solution.


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