fix: support <3.12

.github/workflows/pr.yml

@@ -0,0 +1,45 @@
+name: Pull Request Checks
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          pip install --upgrade pip
+          pip install pytest build psycopg2-binary
+
+      - name: Build
+        run: |
+          python -m build
+
+      - name: Install build artifact (wheel)
+        run: |
+          pip install $(ls dist/*.whl)
+      - name: Run tests
+        run: |
+          pytest tests/test_import_from_sqlalchemy.py
+
+      - name: Install build artifact (tgz)
+        run: |
+          pip uninstall -y sqlalchemy-redshift
+          pip install $(ls dist/*.tar.gz)
+      - name: Run tests
+        run: |
+          pytest tests/test_import_from_sqlalchemy.py

sqlalchemy_redshift/dialect/__init__.py → sqlalchemy_redshift/dialect.py

@@ -3,7 +3,6 @@
 import re
 from collections import defaultdict, namedtuple
 from logging import getLogger
-
 from importlib.resources import files
 import sqlalchemy as sa
 from packaging.version import Version
@@ -1212,7 +1211,7 @@ def create_connect_args(self, *args, **kwargs):
         """
         default_args = {
             'sslmode': 'verify-full',
-            'sslrootcert': str(files(__name__).joinpath('redshift-ca-bundle.crt')),
+            'sslrootcert': str(files("sqlalchemy_redshift").joinpath("redshift-ca-bundle.crt"))
         }
         cargs, cparams = (
             super(Psycopg2RedshiftDialectMixin, self).create_connect_args(

tests/test_import_from_sqlalchemy.py

@@ -0,0 +1,11 @@
+from sqlalchemy import create_engine
+
+
+def test_sqla_create_engine():
+    """
+    Historically SQLalchemy's integration with this package has differed in behavior between Python versions. 
+    This test should be run with each Python version that GX supports.
+    """
+    create_engine(
+        "redshift+psycopg2://username:password@my-redshift-cluster.abcdef123456.us-west-2.redshift.amazonaws.com:5439/mydatabase"
+    )