[openstack-dev] [oslo] eventlet 0.17.3 is now fully Python 3 compatible

Victor Sergeyev vsergeyev at mirantis.com
Thu Apr 9 16:28:17 UTC 2015


Thanks for your work on this! :)

On Thu, Apr 9, 2015 at 7:25 PM, Victor Stinner <vstinner at redhat.com> wrote:

> Hi,
>
> During the last OpenStack Summit at Paris, we discussed how we can port
> OpenStack to Python 3, because eventlet was not compatible with Python 3.
> There are multiple approaches: port eventlet to Python 3, replace eventlet
> with asyncio, replace eventlet with threads, etc. We decided to not take a
> decision and instead investigate all options.
>
> I fixed 4 issues with monkey-patching in Python 3 (importlib, os.open(),
> threading.RLock, threading.Thread). Good news: the just released eventlet
> 0.17.3 includes these fixes and it is now fully compatible with Python 3!
> For example, the Oslo Messaging test suite now pass with this eventlet
> version! Currently, eventlet is disabled in Oslo Messaging on Python 3
> (eventlet tests are skipped).
>
> I just sent a patch for requirements and Oslo Messaging to bump to
> eventlet 0.17.3, but it will have to wait until everyone has master as
> Liberty.
>
>    https://review.openstack.org/#/c/172132/
>    https://review.openstack.org/#/c/172135/
>
> It becomes possible to port more projects depending on eventlet to Python
> 3!
>
> Liberty cycle will be a good opportunity to port more OpenStack components
> to Python 3. Most OpenStack clients and Common Libraries are *already*
> Python 3 compatible, see the wiki page:
>
>    https://wiki.openstack.org/wiki/Python3
>
> --
>
> To replace eventlet, I wrote a spec to replace it with asyncio:
>
>    https://review.openstack.org/#/c/153298/
>
> Joshua Harlow wrote a spec to replace eventlet with threads:
>
>    https://review.openstack.org/#/c/156711/
>
> But then he wrote a single spec "Replace eventlet + monkey-patching with
> ??" which covers threads and asyncio:
>
>    https://review.openstack.org/#/c/164035/
>
> Victor
>
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