[Twisted-Python] Twisted 21.2.0rc1 Release Candidate Announcement

[Richard van der Hoff]

On 21/02/2021 00:31, Richard van der Hoff wrote:

> On 15/02/2021 02:53, Craig Rodrigues wrote:
>> It's time for another Twisted release!
>>
>> There are two major announcements for this release:
>>
>> - *Python 2.7 support has been dropped*.  Twisted 21.2.0 supports 
>> Python 3.5 and higher only
>> - *This will be the last Twisted release to support Python 3.5*.
>>
> Thanks Craig for getting this release ready.
>
> It looks like it is incompatible with Python 3.5.2: exception as 
> below. There's no real reason you should care about this, except that 
> it is (still!) what Ubuntu 16.04LTS ships with, and Ubuntu claim to 
> still be supporting 16.04 until April this year, so this might catch a 
> few people by surprise, as it did me[1]. Anyway, I suggest bumping 
> `python_requires` in `setup.cfg` 
> (https://github.com/twisted/twisted/blob/trunk/setup.cfg#L27), to stop 
> the new version being installed on systems where it won't work.
>
It also breaks compat with treq 20.4 and earlier. This may or may not be 
a thing you care about:

   File "/home/rav/work/synapse/synapse/http/client.py", line 33, in 
<module>
     import treq
   File 
"/home/rav/work/synapse/env3/lib/python3.8/site-packages/treq/__init__.py", 
line 5, in <module>
     from treq.api import head, get, post, put, patch, delete, request
   File 
"/home/rav/work/synapse/env3/lib/python3.8/site-packages/treq/api.py", 
line 5, in <module>
     from treq.client import HTTPClient
   File 
"/home/rav/work/synapse/env3/lib/python3.8/site-packages/treq/client.py", 
line 11, in <module>
     from twisted.python.compat import _PY3, unicode
ImportError: cannot import name '_PY3' from 'twisted.python.compat' 
(unknown location)


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