fix: mypy issue on py3.9 + prevent similar issues (#29864)

.asf.yaml

@@ -70,6 +70,9 @@ github:
           - cypress-matrix (4, chrome)
           - cypress-matrix (5, chrome)
           - frontend-build
+          - pre-commit (current)
+          - pre-commit (next)
+          - pre-commit (previous)
           - python-lint
           - test-mysql
           - test-postgres (current)

.github/workflows/pre-commit.yml

@@ -16,6 +16,9 @@ concurrency:
 jobs:
   pre-commit:
     runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        python-version: ["current", "next", "previous"]
     steps:
       - name: "Checkout ${{ github.ref }} ( ${{ github.sha }} )"
         uses: actions/checkout@v4
@@ -24,6 +27,8 @@ jobs:
           submodules: recursive
       - name: Setup Python
         uses: ./.github/actions/setup-backend/
+        with:
+          python-version: ${{ matrix.python-version }}
       - name: Enable brew and helm-docs
         # Add brew to the path - see https://github.com/actions/runner-images/issues/6283
         run: |

superset/commands/distributed_lock/base.py

@@ -17,7 +17,7 @@
 
 import logging
 import uuid
-from typing import Any
+from typing import Any, Union
 
 from flask import current_app
 
@@ -34,7 +34,7 @@ class BaseDistributedLockCommand(BaseCommand):
     codec = JsonKeyValueCodec()
     resource = KeyValueResource.LOCK
 
-    def __init__(self, namespace: str, params: dict[str, Any] | None = None):
+    def __init__(self, namespace: str, params: Union[dict[str, Any], None] = None):
         self.key = get_key(namespace, **(params or {}))
 
     def validate(self) -> None:

tests/unit_tests/db_engine_specs/test_couchbase.py

@@ -16,7 +16,7 @@
 # under the License.
 
 from datetime import datetime
-from typing import Any, Optional
+from typing import Any, Optional, Union
 
 import pytest
 from sqlalchemy import types
@@ -84,7 +84,7 @@ def test_convert_dttm(
 def test_get_column_spec(
     native_type: str,
     sqla_type: type[types.TypeEngine],
-    attrs: dict[str, Any] | None,
+    attrs: Union[dict[str, Any], None],
     generic_type: GenericDataType,
     is_dttm: bool,
 ) -> None: