style(python): ajoute isort pour ordonner les imports

Makefile

@@ -141,4 +141,10 @@ cov: test ### vérifie la couverture de code
 	@echo open htmlcov/index.html
 
 lint: ### vérifie la syntaxe et le code python
-	$(PYTHON) -m flake8 benevalibre
+	@$(PYTHON) -m flake8 benevalibre \
+	  || echo "\033[31m[flake8]\033[0m Veuillez corriger les erreurs ci-dessus."
+	@$(PYTHON) -m isort --check --recursive benevalibre \
+	  || echo "\033[31m[isort]\033[0m Veuillez corriger l'ordre des imports avec : make isort"
+
+fix-lint: ### corrige la syntaxe et ordonne les imports python
+	$(PYTHON) -m isort --recursive benevalibre

requirements/development.txt

@@ -8,6 +8,7 @@ pytest-sugar  # https://github.com/Frozenball/pytest-sugar
 # Code quality
 # ------------------------------------------------------------------------------
 flake8 >=3.5.0  # https://github.com/pycqa/flake8
+isort  # https://github.com/timothycrosley/isort
 pytest-cov  # https://github.com/pytest-dev/pytest-cov
 
 # Django

setup.cfg

@@ -33,3 +33,13 @@ exclude =
     docs,
     node_modules
 max-line-length = 80
+
+[isort]
+line_length = 80
+known_first_party = benevalibre
+multi_line_output = 3
+default_section = THIRDPARTY
+known_django = django
+sections = FUTURE,STDLIB,DJANGO,THIRDPARTY,FIRSTPARTY,LOCALFOLDER
+skip_glob = **/migrations/*.py
+include_trailing_comma = True