NO-SNOW: drop EOL Python 3.9 support (#2889)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sfc-gh-pczajka

.github/workflows/build_test.yml

@@ -54,7 +54,9 @@ jobs:
             MATRIX=$(jq -c . < ./.github/workflows/generated_pr_matrix.json)
           fi
           echo "test_matrix=$MATRIX" >> "$GITHUB_OUTPUT"
-          echo "build_matrix=$(echo "$MATRIX" | jq -c '[group_by(.os_download_name, .["python-version"]) | .[] | first]')" >> "$GITHUB_OUTPUT"
+          # Always build manylinux_x86_64+py3.11 even when not in the PR test matrix:
+          # the FIPS test job depends on that wheel artifact.
+          echo "build_matrix=$(echo "$MATRIX" | jq -c '[group_by(.os_download_name, .["python-version"]) | .[] | first] + [{"os_image_name": "ubuntu-latest", "os_download_name": "manylinux_x86_64", "python-version": "3.11"}] | unique_by([.os_download_name, .["python-version"]])')" >> "$GITHUB_OUTPUT"
   lint:
     name: Check linting
     runs-on: ubuntu-latest
@@ -254,7 +256,7 @@ jobs:
          # TODO: It can be changed to ubuntu-latest, when python sf connector version in tox is above 3.4.0
          - image_name: ubuntu-22.04
            download_name: linux
-        python-version: [3.9]
+        python-version: ["3.10"]
         cloud-provider: [aws]
     steps:
       - uses: actions/checkout@v4
@@ -300,7 +302,7 @@ jobs:
         os:
          - image_name: ubuntu-latest
            download_name: linux
-        python-version: [3.9]
+        python-version: ["3.10"]
         cloud-provider: [aws]
     steps:
       - uses: actions/checkout@v4
@@ -323,7 +325,7 @@ jobs:
         shell: bash
 
   test-fips:
-    name: Test FIPS linux-3.9-${{ matrix.cloud-provider }}
+    name: Test FIPS linux-3.11-${{ matrix.cloud-provider }}
     needs: build
     runs-on: ubuntu-latest
     strategy:
@@ -349,15 +351,15 @@ jobs:
       - name: Download wheel(s)
         uses: actions/download-artifact@v4
         with:
-          name: manylinux_x86_64_py3.9
+          name: manylinux_x86_64_py3.11
           path: dist
       - name: Show wheels downloaded
         run: ls -lh dist
         shell: bash
       - name: Run tests
         run: ./ci/test_fips_docker.sh
         env:
-          PYTHON_VERSION: 3.9
+          PYTHON_VERSION: "3.11"
           cloud_provider: ${{ matrix.cloud-provider }}
           PYTEST_ADDOPTS: --color=yes --tb=short
           TOX_PARALLEL_NO_SPINNER: 1
@@ -366,15 +368,15 @@ jobs:
         if: always()
         with:
           include-hidden-files: true
-          name: coverage_linux-fips-3.9-${{ matrix.cloud-provider }}
+          name: coverage_linux-fips-3.11-${{ matrix.cloud-provider }}
           path: |
             .coverage
             coverage.xml
       - uses: actions/upload-artifact@v4
         if: always()
         with:
           include-hidden-files: true
-          name: junit_linux-fips-3.9-${{ matrix.cloud-provider }}
+          name: junit_linux-fips-3.11-${{ matrix.cloud-provider }}
           path: |
             junit.*.xml
 
@@ -521,46 +523,15 @@ jobs:
             .tox/.coverage
             .tox/coverage.xml
 
-  test-unsupported-aio:
-    if: false  # temporarily disable aio - SNOW-2905263
-    name: Test unsupported asyncio ${{ matrix.os.download_name }}-${{ matrix.python-version }}
-    runs-on: ${{ matrix.os.image_name }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - image_name: ubuntu-latest
-            download_name: manylinux_x86_64
-        python-version: [ "3.9", ]
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Display Python version
-        run: python -c "import sys; print(sys.version)"
-      - name: Upgrade setuptools, pip and wheel
-        run: python -m pip install -U setuptools pip wheel
-      - name: Install tox
-        run: python -m pip install tox>=4
-      - name: Run tests
-        run: python -m tox run -e aio-unsupported-python
-        env:
-          PYTHON_VERSION: ${{ matrix.python-version }}
-          PYTEST_ADDOPTS: --color=yes --tb=short
-          TOX_PARALLEL_NO_SPINNER: 1
-        shell: bash
-
   test-rockylinux9:
     name: Test Rocky Linux 9 rockylinux9-${{ matrix.python-version }}-${{ matrix.cloud-provider }}
     needs: lint
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        # Rocky Linux 9 has Python 3.9, 3.11, and 3.12 available
-        python-version: ["3.9", "3.11", "3.12"]
+        # Rocky Linux 9 has Python 3.11 and 3.12 available
+        python-version: ["3.11", "3.12"]
         cloud-provider: [aws, azure, gcp]
     steps:
       - name: Set shortver
@@ -633,7 +604,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.9'
+          python-version: '3.10'
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
       - name: Upgrade setuptools and pip

.github/workflows/create_req_files.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python

.github/workflows/generated_full_matrix.json

@@ -1,22 +1,4 @@
 [
-  {
-    "os_image_name": "ubuntu-latest",
-    "os_download_name": "manylinux_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "aws"
-  },
-  {
-    "os_image_name": "ubuntu-latest",
-    "os_download_name": "manylinux_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "azure"
-  },
-  {
-    "os_image_name": "ubuntu-latest",
-    "os_download_name": "manylinux_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "gcp"
-  },
   {
     "os_image_name": "ubuntu-latest",
     "os_download_name": "manylinux_x86_64",
@@ -107,24 +89,6 @@
     "python-version": "3.14",
     "cloud-provider": "gcp"
   },
-  {
-    "os_image_name": "macos-latest",
-    "os_download_name": "macosx_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "aws"
-  },
-  {
-    "os_image_name": "macos-latest",
-    "os_download_name": "macosx_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "azure"
-  },
-  {
-    "os_image_name": "macos-latest",
-    "os_download_name": "macosx_x86_64",
-    "python-version": "3.9",
-    "cloud-provider": "gcp"
-  },
   {
     "os_image_name": "macos-latest",
     "os_download_name": "macosx_x86_64",
@@ -215,24 +179,6 @@
     "python-version": "3.14",
     "cloud-provider": "gcp"
   },
-  {
-    "os_image_name": "windows-latest",
-    "os_download_name": "win_amd64",
-    "python-version": "3.9",
-    "cloud-provider": "aws"
-  },
-  {
-    "os_image_name": "windows-latest",
-    "os_download_name": "win_amd64",
-    "python-version": "3.9",
-    "cloud-provider": "azure"
-  },
-  {
-    "os_image_name": "windows-latest",
-    "os_download_name": "win_amd64",
-    "python-version": "3.9",
-    "cloud-provider": "gcp"
-  },
   {
     "os_image_name": "windows-latest",
     "os_download_name": "win_amd64",

.github/workflows/generated_pr_matrix.json

@@ -2,7 +2,7 @@
   {
     "os_image_name": "ubuntu-latest",
     "os_download_name": "manylinux_x86_64",
-    "python-version": "3.9",
+    "python-version": "3.10",
     "cloud-provider": "aws"
   },
   {
@@ -14,7 +14,7 @@
   {
     "os_image_name": "macos-latest",
     "os_download_name": "macosx_x86_64",
-    "python-version": "3.9",
+    "python-version": "3.10",
     "cloud-provider": "azure"
   },
   {
@@ -26,7 +26,7 @@
   {
     "os_image_name": "windows-latest",
     "os_download_name": "win_amd64",
-    "python-version": "3.9",
+    "python-version": "3.10",
     "cloud-provider": "gcp"
   },
   {

CONTRIBUTING.md

@@ -30,8 +30,8 @@ dependencies installed with `snowflake-connector-python` installed as an editabl
 Setting up a development environment is super easy with this [one simple tox command](https://tox.wiki/en/legacy/example/devenv.html).
 
 ```shell
-tox --devenv venv39 -e py39
-. venv39/bin/activate
+tox --devenv venv310 -e py310
+. venv310/bin/activate
 ```
 
 Note: we suggest using the lowest supported Python version for development.

DESCRIPTION.md

@@ -8,6 +8,7 @@ Source code is also available at: https://github.com/snowflakedb/snowflake-conne
 
 # Release Notes
 - Upcoming Release
+  - Dropped support for Python 3.9. The minimum supported version is now Python 3.10.
   - Fixed sdist to only install the minicore binary matching the current platform (SNOW-3526469). Previous 4.x releases copied every platform's minicore `.so`/`.dylib`/`.dll` into the install prefix, breaking downstream packagers (e.g. Homebrew) whose audits reject foreign-arch binaries.
   - Added one in-band telemetry record per successful login describing which connection-identifier fields the user supplied (`account_provided`, `account_with_region`, `account_org_provided`, `region_provided`, `host_provided`). No hostname or account value is included. This is gated by the existing server-side `CLIENT_TELEMETRY_ENABLED` parameter and can additionally be disabled locally by setting `SF_TELEMETRY_DISABLE_CONNECTION_SHAPE=true`. The telemetry collection is time-boxed and will be removed in a future release.
 

README.md

@@ -15,7 +15,7 @@ using the Snowflake JDBC or ODBC drivers.
 
 The connector has **no** dependencies on JDBC or ODBC.
 It can be installed using ``pip`` on Linux, Mac OSX, and Windows platforms
-where Python 3.9.0 (or higher) is installed.
+where Python 3.10.0 (or higher) is installed.
 
 Snowflake Documentation is available at:
 https://docs.snowflake.com/
@@ -42,7 +42,7 @@ Find the `snowflake_connector_python*.whl` package in the `./dist` directory.
 ### In Docker
 Or use our Dockerized build script `ci/build_docker.sh` and find the built wheel files in `dist/repaired_wheels`.
 
-Note: `ci/build_docker.sh` can be used to compile only certain versions, like this: `ci/build_docker.sh "3.9 3.10"`
+Note: `ci/build_docker.sh` can be used to compile only certain versions, like this: `ci/build_docker.sh "3.10 3.11"`
 
 ## Code hygiene and other utilities
 These tools are integrated into `tox` to allow us to easily set them up universally on any computer.

ci/anaconda/conda_build.sh

@@ -2,7 +2,6 @@
 conda install conda-build
 conda install conda-verify
 conda install diffutils
-conda build ci/anaconda/recipe/ --python 3.9
 conda build ci/anaconda/recipe/ --python 3.10
 conda build ci/anaconda/recipe/ --python 3.11
 conda build ci/anaconda/recipe/ --python 3.12

ci/anaconda/recipe/meta.yaml

@@ -37,9 +37,7 @@ requirements:
     - cython
     - python {{ python }}
   run:
-    {% if py == 39 %}
-    - python >=3.9,<3.10.0a0
-    {% elif py == 310 %}
+    {% if py == 310 %}
     - python >=3.10,<3.11.0a0
     {% elif py == 311 %}
     - python >=3.11,<3.12.0a0
@@ -61,7 +59,6 @@ requirements:
     - packaging
     - charset-normalizer >=2,<4
     - idna >=3.7,<4
-    - urllib3 >=1.26.5,<2.0.0  # [py<310]
     - certifi >=2024.7.4
     - typing_extensions >=4.3,<5
     - filelock >=3.5,<4

ci/build_darwin.sh

@@ -2,8 +2,8 @@
 #
 # Build Snowflake Python Connector on Mac
 # NOTES:
-#   - To compile only a specific version(s) pass in versions like: `./build_darwin.sh "3.9 3.10"`
-PYTHON_VERSIONS="${1:-3.9 3.10 3.11 3.12 3.13 3.14}"
+#   - To compile only a specific version(s) pass in versions like: `./build_darwin.sh "3.10 3.11"`
+PYTHON_VERSIONS="${1:-3.10 3.11 3.12 3.13 3.14}"
 
 THIS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 CONNECTOR_DIR="$(dirname "${THIS_DIR}")"
@@ -36,7 +36,7 @@ for PYTHON_VERSION in ${PYTHON_VERSIONS}; do
 
     log "[Info] ===== Starting build for Python ${PYTHON_VERSION} ====="
 
-    # Select the matching pyenv-installed version (e.g. 3.9 -> 3.9.21)
+    # Select the matching pyenv-installed version (e.g. 3.10 -> 3.10.15)
     if command -v pyenv &> /dev/null; then
         PYENV_MATCH=$(pyenv versions --bare | grep "^${PYTHON_VERSION//./\\.}" | head -1)
         if [ -n "$PYENV_MATCH" ]; then