add example of use for pre-commit

templates/python/code_quality/pre-commit/README.md

@@ -27,3 +27,14 @@ framework for managing and maintaining multi-language pre-commit hooks.
 To add configuration to `pre-commit`, you can add a `.pre-commit-config.yaml` file to
 the root of your repository. This file will be used by `pre-commit` to configure the
 hooks.
+
+## Example of use
+
+Here is a configuration example for `pre-commit` for `pre-push` stage:
+
+```yaml
+pre-push:
+    extends: pre-commit
+    variables:
+        PRE_COMMIT_RUN: pre-commit run --all-files --hook-stage pre-push
+```