add isort configuration (#52457)

.git-blame-ignore-revs

@@ -1,2 +1,4 @@
 # misc: apply black
 4bb33d3d3c62516cfdb1ff5bba9216936a07d368
+# misc: apply isort
+86d946adcdc784693d733131c2aecafc6caa8cbb

.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

@@ -78,6 +78,10 @@ black is used to format the code, using thoses parameters:
 There is .pre-commit-config.yaml to use pre-commit to automatically run black
 before commits. (execute `pre-commit install` to install the git hook.)
 
+isort is used to format the imports, using those parameter:
+
+    isort --force-single-line-imports --line-length 110
+
 Support
 =======
 

tox.ini

@@ -113,6 +113,7 @@ deps =
   pre-commit
 commands =
   pre-commit run black --all-files --show-diff-on-failure
+  pre-commit run isort --all-files --show-diff-on-failure
 
 [pytest]
 filterwarnings =