Remove Python 3.9 support (#13861)

Closes #13858
Authored by: bashonly

.github/workflows/build.yml

@@ -558,35 +558,39 @@ jobs:
           cat >> _update_spec << EOF
           # This file is used for regulating self-update
           lock 2022.08.18.36 .+ Python 3\.6
-          lock 2023.11.16 (?!win_x86_exe).+ Python 3\.7
+          lock 2023.11.16 zip Python 3\.7
           lock 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lock 2024.10.22 py2exe .+
           lock 2024.10.22 zip Python 3\.8
           lock 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
           lock 2025.08.11 darwin_legacy_exe .+
           lock 2025.08.27 linux_armv7l_exe .+
+          lock 2025.10.14 zip Python 3\.9
           lockV2 yt-dlp/yt-dlp 2022.08.18.36 .+ Python 3\.6
-          lockV2 yt-dlp/yt-dlp 2023.11.16 (?!win_x86_exe).+ Python 3\.7
+          lockV2 yt-dlp/yt-dlp 2023.11.16 zip Python 3\.7
           lockV2 yt-dlp/yt-dlp 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp 2024.10.22 py2exe .+
           lockV2 yt-dlp/yt-dlp 2024.10.22 zip Python 3\.8
           lockV2 yt-dlp/yt-dlp 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
           lockV2 yt-dlp/yt-dlp 2025.08.11 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp 2025.08.27 linux_armv7l_exe .+
-          lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 (?!win_x86_exe).+ Python 3\.7
+          lockV2 yt-dlp/yt-dlp 2025.10.14 zip Python 3\.9
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 zip Python 3\.7
           lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 py2exe .+
           lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 zip Python 3\.8
           lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
           lockV2 yt-dlp/yt-dlp-nightly-builds 2025.08.12.233030 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp-nightly-builds 2025.08.30.232839 linux_armv7l_exe .+
-          lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 (?!win_x86_exe).+ Python 3\.7
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2025.10.14.232845 zip Python 3\.9
+          lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 zip Python 3\.7
           lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 win_x86_exe .+ Windows-(?:Vista|2008Server)
           lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.045052 py2exe .+
           lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 zip Python 3\.8
           lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
           lockV2 yt-dlp/yt-dlp-master-builds 2025.08.12.232447 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp-master-builds 2025.09.05.212910 linux_armv7l_exe .+
+          lockV2 yt-dlp/yt-dlp-master-builds 2025.10.14.232330 zip Python 3\.9
           EOF
 
       - name: Sign checksum files

.github/workflows/core.yml

@@ -36,12 +36,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        # CPython 3.9 is in quick-test
-        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14-dev', pypy-3.11]
+        # CPython 3.10 is in quick-test
+        python-version: ['3.11', '3.12', '3.13', '3.14', pypy-3.11]
         include:
         # atleast one of each CPython/PyPy tests must be in windows
-        - os: windows-latest
-          python-version: '3.9'
         - os: windows-latest
           python-version: '3.10'
         - os: windows-latest
@@ -51,7 +49,7 @@ jobs:
         - os: windows-latest
           python-version: '3.13'
         - os: windows-latest
-          python-version: '3.14-dev'
+          python-version: '3.14'
         - os: windows-latest
           python-version: pypy-3.11
     steps:

.github/workflows/download.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: 3.9
+        python-version: '3.10'
     - name: Install test requirements
       run: python3 ./devscripts/install_deps.py --include dev
     - name: Run tests
@@ -28,11 +28,11 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14-dev', pypy-3.11]
+        python-version: ['3.11', '3.12', '3.13', '3.14', pypy-3.11]
         include:
         # atleast one of each CPython/PyPy tests must be in windows
         - os: windows-latest
-          python-version: '3.9'
+          python-version: '3.10'
         - os: windows-latest
           python-version: pypy-3.11
     steps:

.github/workflows/quick-test.yml

@@ -10,10 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.9
+    - name: Set up Python 3.10
       uses: actions/setup-python@v6
       with:
-        python-version: '3.9'
+        python-version: '3.10'
     - name: Install test requirements
       run: python3 ./devscripts/install_deps.py -o --include test
     - name: Run tests
@@ -29,7 +29,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v6
       with:
-        python-version: '3.9'
+        python-version: '3.10'
     - name: Install dev dependencies
       run: python3 ./devscripts/install_deps.py -o --include static-analysis
     - name: Make lazy extractors

.github/workflows/signature-tests.yml

@@ -25,7 +25,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14-dev', pypy-3.11]
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', pypy-3.11]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}