#23919: Cleanups for when we drop Python 2 compatibility
--------------------------------------+------------------------------------
Reporter: Tim Graham | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Core (Other) | Version:
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Nick Pope):
Given that Django 2.0 is targeting Python 3.5+, are there other things
that could be cleaned up that were added to support <3.5 or could be used
now that 3.5 is the minimum version?
For example, there are many places with the following pattern:
{{{#!python
try:
...
except ...:
pass
}}}
These could be replaced with
[[https://docs.python.org/3/library/contextlib.html#contextlib.suppress|contextlib.suppress()]]
which is available since 3.4.
Other potentially interesting things are:
- Use of [[https://docs.python.org/3.5/whatsnew/3.5.html#whatsnew-
pep-448|unpacking generalisations]]
- Use of [[https://docs.python.org/3.5/whatsnew/3.5.html#whatsnew-
pep-484|type hints]] and a type checker when building.
- Use of [[https://docs.python.org/3.5/whatsnew/3.5.html#whatsnew-
pep-471|os.scandir()]] instead of os.listdir().
- Use of the [[https://docs.python.org/3.5/library/enum.html#module-
enum|enum]] and [[https://docs.python.org/3.5/library/pathlib.html#module-
pathlib|pathlib]] modules where appropriate.
-
[[https://docs.python.org/3/library/contextlib.html#contextlib.redirect_stdout|contextlib.redirect_stdout()]]
and
[[https://docs.python.org/3/library/contextlib.html#contextlib.redirect_stderr|contextlib.redirect_stderr()]]
There may be more - this was just a quick look at the What's New pages for
3.4 and 3.5.
--
Ticket URL: <https://code.djangoproject.com/ticket/23919#comment:103>
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