misc: add isort (#52797)

.pre-commit-config.yaml

@@ -6,3 +6,8 @@ repos:
     hooks:
     - id: black
       args: ['--target-version', 'py37', '--skip-string-normalization', '--line-length', '110']
+-   repo: https://github.com/PyCQA/isort
+    rev: 5.7.0
+    hooks:
+    - id: isort
+      args: ['--profile', 'black', '--line-length', '110']

README

@@ -96,7 +96,11 @@ black is used to format the code, using thoses parameters:
 
     black --target-version py37 --skip-string-normalization --line-length 110
 
-There is .pre-commit-config.yaml to use pre-commit to automatically run black
+isort is used to format the imports, using those parameters:
+
+    isort --profile black --line-length 110
+
+There is .pre-commit-config.yaml to use pre-commit to automatically run black and isort
 before commits. (execute `pre-commit install` to install the git hook.)
 
 

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/combo/{env:BRANCH_NAME:}
-envlist = coverage-py3-django111-black-pylint-{sqlite,pg},py3-django22-pg
+envlist = coverage-py3-django111-codestyle-pylint-{sqlite,pg},py3-django22-pg
 
 [testenv]
 usedevelop = True
@@ -32,11 +32,11 @@ deps =
   vobject
   django-ratelimit<3
   git+https://git.entrouvert.org/debian/django-ckeditor.git
-  black: pre-commit
+  pre-commit
   uwsgidecorators
 commands =
   ./getlasso3.sh
   python manage.py compilemessages
   py.test {env:COVERAGE:} {posargs: --junitxml=junit-{envname}.xml tests/}
   pylint: ./pylint.sh combo/
-  black: pre-commit run black --all-files --show-diff-on-failure
+  codestyle: pre-commit run --all-files --show-diff-on-failure