Added py_format job.

python/format.yml

+py_format:
+  extends:
+    - .python-default
+  script:
+    - black --diff --check .
+  parallel:
+    matrix:
+      # format is not required for different py versions
+      - PYTHON_VERSIONS: 3.10

python-template @ 76e5c375

-Subproject commit b11729bcc1f51e550261b258e236e7bf288e05e2
+Subproject commit 76e5c37562775c888c7e3e0608c83f42e82985cd

test/python.yml

@@ -42,3 +42,14 @@ py_lint:
         PYTHON_VERSIONS: !reference [.python-versions, versions]
   allow_failure:
     exit_codes: 1
+
+py_format:
+  before_script:
+    - !reference [.ci-setup, script]
+    - cd $PROJECT_ROOT
+    - !reference [.python-default, before_script]
+  parallel:
+    matrix:
+      - PROJECT_ROOT: "test/python-template"
+        EXIT_CODE: 0
+        PYTHON_VERSIONS: 3.10