misc: add isort (#52856)

.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

@@ -36,7 +36,11 @@ black is used to format the code, using thoses parameters:
 
     black --target-version py35 --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

@@ -1,5 +1,5 @@
 [tox]
-envlist = py3-django111-pg-black-coverage-pylint, py3-django22-pg
+envlist = py3-django111-pg-codestyle-coverage-pylint, py3-django22-pg
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/chrono/{env:BRANCH_NAME:}
 
 [testenv]
@@ -32,10 +32,10 @@ deps =
   django22: django>=2.2,<2.3
   django111: djangorestframework<3.12.0
   psycopg2-binary
-  pre-commit
+  codestyle: pre-commit
 commands =
   ./getlasso3.sh
   python3 setup.py compile_translations
   py.test {env:COVERAGE:} {posargs:tests/}
   pylint: ./pylint.sh chrono/
-  black: pre-commit run black --all-files --show-diff-on-failure
+  codestyle: pre-commit run --all-files --show-diff-on-failure