dflook · dflook · Sep 10, 2026 · Sep 11, 2026 · Sep 13, 2026 · Sep 13, 2026
diff --git a/.github/workflows/create_draft_release.yaml b/.github/workflows/create_draft_release.yaml
@@ -24,7 +24,7 @@ jobs:
         sdist: ${{ steps.package.outputs.sdist }}
         wheel: ${{ steps.package.outputs.wheel }}
     container:
-      image: danielflook/python-minifier-build:python3.14-2025-09-26
+      image: danielflook/python-minifier-build:python3.15-2026-09-10
     permissions:
       contents: read
     steps:
@@ -85,7 +85,7 @@ jobs:
     outputs:
         wheel: ${{ steps.package.outputs.wheel }}
     container:
-      image: danielflook/python-minifier-build:python2.7-2025-09-26
+      image: danielflook/python-minifier-build:python2.7-2026-09-10
     steps:
       - name: Download source distribution artifact
         uses: actions/download-artifact@v7.0.0
@@ -115,7 +115,7 @@ jobs:
     runs-on: ubuntu-24.04
     needs: [package_python3]
     container:
-      image: danielflook/python-minifier-build:python3.14-2025-09-26
+      image: danielflook/python-minifier-build:python3.15-2026-09-10
     permissions:
       contents: read
     steps:
@@ -157,7 +157,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
         package_type: [sdist, wheel]
     steps:
       - name: Checkout
@@ -177,7 +177,7 @@ jobs:
       - name: Test
         uses: $/.github/actions/run-in-container
         with:
-          image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-09-26
+          image: danielflook/python-minifier-build:python${{ matrix.python }}-2026-09-10
           run: |
             if [[ "${{ matrix.package_type }}" == "sdist" ]]; then
               pip${{ matrix.python }} install dist/${{needs.package_python3.outputs.sdist}}
@@ -217,7 +217,7 @@ jobs:
     permissions:
       contents: read
     container:
-      image: danielflook/python-minifier-build:python3.14-2025-09-26
+      image: danielflook/python-minifier-build:python3.15-2026-09-10
     steps:
       - name: Download distribution artifacts
         uses: actions/download-artifact@v7.0.0
@@ -232,9 +232,9 @@ jobs:
           PYTHON3_WHEEL: ${{ needs.package_python3.outputs.wheel }}
         run: |
           if [[ "${{ matrix.package_type }}" == "sdist" ]]; then
-            pip3.14 install "dist/$PYTHON3_SDIST"
+            pip3.15 install "dist/$PYTHON3_SDIST"
           else
-            pip3.14 install "dist/$PYTHON3_WHEEL"
+            pip3.15 install "dist/$PYTHON3_WHEEL"
           fi
 
       - name: Checkout
@@ -246,7 +246,7 @@ jobs:
 
       - name: Test typing
         run: |
-          pip3.14 install 'mypy<1.12.0' types-setuptools
+          pip3.15 install 'mypy<1.12.0' types-setuptools
           mypy --strict typing_test/test_typing.py
 
           if mypy --strict typing_test/test_badtyping.py; then

diff --git a/.github/workflows/release_test.yaml b/.github/workflows/release_test.yaml
@@ -15,7 +15,7 @@ jobs:
     outputs:
       release_version: ${{ steps.set_version.outputs.version }}
     container:
-      image: danielflook/python-minifier-build:python3.14-2025-09-26
+      image: danielflook/python-minifier-build:python3.15-2026-09-10
     steps:
       - name: Checkout
         uses: actions/checkout@v7.0.1

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "pypy", "pypy3"]
+        python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "python3.15", "pypy", "pypy3"]
     steps:
       - name: Checkout
         uses: actions/checkout@v7.0.1
@@ -30,7 +30,7 @@ jobs:
       - name: Run tests
         uses: $/.github/actions/run-in-container
         with:
-          image: danielflook/python-minifier-build:${{ matrix.python }}-2025-09-26
+          image: danielflook/python-minifier-build:${{ matrix.python }}-2026-09-10
           run: |
             tox -r -e $(echo "${{ matrix.python }}" | tr -d .)
 
@@ -48,7 +48,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['2.7', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['2.7', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
     steps:
       - name: Checkout
         uses: actions/checkout@v7.0.1
@@ -58,7 +58,7 @@ jobs:
           persist-credentials: false
 
       - name: Set up Python
-        if: ${{ matrix.python-version != '2.7' && matrix.python-version != '3.14' }}
+        if: ${{ matrix.python-version != '2.7' && matrix.python-version != '3.14'  && matrix.python-version != '3.15' }}
         uses: actions/setup-python@v7.0.0
         with:
           python-version: ${{ matrix.python-version }}
@@ -69,6 +69,12 @@ jobs:
         with:
           python-version: '3.14.0-rc.3'
 
+      - name: Set up Python 3.15
+        if: ${{ matrix.python-version == '3.15' }}
+        uses: actions/setup-python@v7.0.0
+        with:
+          python-version: '3.15.0-rc.2'
+
       - name: Set up Python
         if: ${{ matrix.python-version == '2.7' }}
         uses: LizardByte/actions/actions/setup_python@a46850981292c4bbc0c41715f286ad95adaaaf4a  # v2026.625.20301
@@ -150,6 +156,7 @@ jobs:
           - Dockerfile-fedora38
           - Dockerfile-fedora40
           - Dockerfile-fedora42
+          - Dockerfile-fedora44
           - Dockerfile-fuzz
     steps:
       - name: Checkout
@@ -186,7 +193,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v7.0.0
         with:
-          python-version: '3.14'
+          python-version: '3.15.0-rc.2'
 
       - name: Install coverage
         run: pip install coverage

diff --git a/.github/workflows/test_corpus.yaml b/.github/workflows/test_corpus.yaml
@@ -44,7 +44,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
         ref: ["${{ inputs.ref }}", "${{ inputs.base-ref }}"]
     steps:
       - name: Clear workspace
@@ -72,7 +72,7 @@ jobs:
       - name: Run tests
         uses: dflook/run-in-container@main
         with:
-          image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-09-26
+          image: danielflook/python-minifier-build:python${{ matrix.python }}-2026-09-10
           volumes: |
             /corpus:/corpus
             /corpus-results:/corpus-results
@@ -143,11 +143,11 @@ jobs:
       - name: Generate Report
         uses: dflook/run-in-container@main
         with:
-          image: danielflook/python-minifier-build:python3.14-2025-09-26
+          image: danielflook/python-minifier-build:python3.15-2026-09-10
           volumes: |
             /corpus-results:/corpus-results
           run: |
-            python3.14 workflow/corpus_test/generate_report.py /corpus-results ${{ inputs.ref }} ${{ steps.ref.outputs.commit }} ${{ inputs.base-ref }} ${{ steps.base-ref.outputs.commit }} | tee -a $GITHUB_STEP_SUMMARY > report.md
+            python3.15 workflow/corpus_test/generate_report.py /corpus-results ${{ inputs.ref }} ${{ steps.ref.outputs.commit }} ${{ inputs.base-ref }} ${{ steps.base-ref.outputs.commit }} | tee -a $GITHUB_STEP_SUMMARY > report.md
 
       - name: Lint Report
         uses: DavidAnson/markdownlint-cli2-action@6bf21b07787794f89a243495939cd651942aeabe # v24.1.0

diff --git a/.github/workflows/verify_release.yaml b/.github/workflows/verify_release.yaml
@@ -17,9 +17,9 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
     container:
-      image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-09-26
+      image: danielflook/python-minifier-build:python${{ matrix.python }}-2026-09-10
     steps:
       - name: Test
         env:

diff --git a/.github/workflows/xtest.yaml b/.github/workflows/xtest.yaml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "pypy3"]
+        python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "python3.15", "pypy3"]
     steps:
       - name: Clear workspace
         run: rm -rf "${GITHUB_WORKSPACE:?}/*"
@@ -33,7 +33,7 @@ jobs:
       - name: Run tests
         uses: $/.github/actions/run-in-container
         with:
-          image: danielflook/python-minifier-build:${{ matrix.python }}-2025-09-26
+          image: danielflook/python-minifier-build:${{ matrix.python }}-2026-09-10
           run: |
 
             if [[ "${{ matrix.python }}" == "python3.4" ]]; then
@@ -68,11 +68,11 @@ jobs:
       - name: Run tests
         uses: $/.github/actions/run-in-container
         with:
-          image: danielflook/python-minifier-build:python3.14-2025-09-26
+          image: danielflook/python-minifier-build:python3.15-2026-09-10
           run: |
 
-            pip3.14 install .
-            pip3.14 install hypothesis pytest
+            pip3.15 install .
+            pip3.15 install hypothesis pytest
 
             pytest hypo_test --hypothesis-show-statistics
 

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -10,6 +10,17 @@ and will output source code compatible with the version of the interpreter it is
 This means that if you minify code written for Python 3.11 using python-minifier running with Python 3.12,
 the minified code may only run with Python 3.12.
 
+## [3.4.0] - Unreleased
+
+### Added
+- Python 3.15 support, including:
+  + PEP 810 lazy imports
+  + PEP 798 unpacking in comprehensions
+
+### Fixed
+- The combine imports transform now combines all runs of `from` imports that can be combined.
+  Previously only a leading run of imports from the same module was combined.
+
 ## [3.3.0] - 2026-09-04
 
 ### Added
@@ -331,6 +342,7 @@ the minified code may only run with Python 3.12.
 - python-minifier package
 - pyminify command
 
+[3.4.0]: https://github.com/dflook/python-minifier/compare/3.3.0...3.4.0
 [3.3.0]: https://github.com/dflook/python-minifier/compare/3.2.0...3.3.0
 [3.2.0]: https://github.com/dflook/python-minifier/compare/3.1.1...3.2.0
 [3.1.1]: https://github.com/dflook/python-minifier/compare/3.1.0...3.1.1

diff --git a/README.md b/README.md
@@ -4,7 +4,7 @@ Transforms Python source code into its most compact representation.
 
 [Try it out!](https://python-minifier.com)
 
-python-minifier currently supports Python 2.7 and Python 3.3 to 3.14. Previous releases supported Python 2.6.
+python-minifier currently supports Python 2.7 and Python 3.3 to 3.15. Previous releases supported Python 2.6.
 
 * [PyPI](https://pypi.org/project/python-minifier/)
 * [Documentation](https://dflook.github.io/python-minifier/)
@@ -110,7 +110,7 @@ and outputs source code compatible with the version of the interpreter it is run
 This means that if you minify code written for Python 3.11 using python-minifier running with Python 3.12,
 the minified code may only run with Python 3.12.
 
-python-minifier runs with and can minify code written for Python 2.7 and Python 3.3 to 3.14.
+python-minifier runs with and can minify code written for Python 2.7 and Python 3.3 to 3.15.
 
 ## Usage
 

diff --git a/corpus_test/generate_report.py b/corpus_test/generate_report.py
@@ -373,7 +373,7 @@ def report(results_dir: str, minifier_ref: str, minifier_sha: str, base_ref: str
 | Python Version | Valid Corpus Entries | Average Time | Minified Size | Larger than original | Recursion Error | Unstable Minification | Exception |
 | -------------- | -------------------: | -----------: | ------------: | -------------------: | --------------: | --------------------: | --------: |'''
 
-    for python_version in ['2.7', '3.3', '3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']:
+    for python_version in ['2.7', '3.3', '3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14', '3.15']:
         try:
             summary = result_summary(results_dir, python_version, minifier_sha)
         except FileNotFoundError:
@@ -410,11 +410,11 @@ def report(results_dir: str, minifier_ref: str, minifier_sha: str, base_ref: str
                     f'| {format_difference(summary.exception(), base_summary.exception())} |'
             )
 
-    all_versions = ['2.7', '3.3', '3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+    all_versions = ['2.7', '3.3', '3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
 
-    yield from report_larger_than_original(results_dir, ['3.14'], minifier_sha)
+    yield from report_larger_than_original(results_dir, ['3.15'], minifier_sha)
     yield from report_larger_than_base(results_dir, all_versions, minifier_sha, base_sha)
-    yield from report_slowest(results_dir, ['3.14'], minifier_sha, base_sha)
+    yield from report_slowest(results_dir, ['3.15'], minifier_sha, base_sha)
     yield from report_unstable(results_dir, all_versions, minifier_sha)
     yield from report_exceptions(results_dir, all_versions, minifier_sha)
 

diff --git a/docker/Dockerfile-fedora44 b/docker/Dockerfile-fedora44
@@ -0,0 +1,54 @@
+FROM fedora:44 AS python3.15
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+# CircleCI required tools
+RUN <<EOF
+    dnf install -y \
+        git \
+        tar \
+        gzip \
+        gpg \
+        ca-certificates
+    dnf clean all && rm -rf /var/cache/dnf/*
+EOF
+
+# Development tools
+RUN <<EOF
+    dnf install -y \
+        @development-tools \
+        findutils \
+        zlib-devel \
+        bzip2-devel \
+        ncurses-devel \
+        gdbm-devel \
+        openssl-devel \
+        sqlite-devel \
+        tk-devel \
+        libuuid-devel \
+        readline-devel \
+        libnsl2-devel \
+        xz-devel \
+        libffi-devel \
+        wget
+    git clone https://github.com/python/cpython.git
+    cd cpython
+    git checkout v3.15.0rc2
+    ./configure
+    make
+    make install
+    cd ..
+    rm -rf cpython
+    dnf clean all && rm -rf /var/cache/dnf/*
+EOF
+
+# Other packages required for tests
+RUN <<EOF
+    dnf install -y bzip2
+    dnf clean all && rm -rf /var/cache/dnf/*
+EOF
+
+RUN pip3 install --no-cache-dir tox==4.61.4 virtualenv==21.7.9 cachetools==7.1.8 chardet==7.6.0 colorama==0.4.6 distlib==0.4.3 filelock==3.32.6 packaging==26.3 platformdirs==4.11.8 pluggy==1.6.0 pyproject-api==1.11.0
+
+WORKDIR /tmp/work
+ENTRYPOINT ["/bin/bash"]
diff --git a/docker/Dockerfile-fuzz b/docker/Dockerfile-fuzz
@@ -1,4 +1,4 @@
-FROM danielflook/python-minifier-build:python3.14-2025-08-21 AS fuzz
+FROM danielflook/python-minifier-build:python3.15-2026-09-10 AS fuzz
 
 RUN pip3 install --no-cache-dir --root-user-action=ignore 'hypothesis[cli]' hypofuzz
 

diff --git a/docker/build-images.sh b/docker/build-images.sh
@@ -35,6 +35,9 @@ docker build --tag danielflook/python-minifier-build:python3.13-$DATE -f Dockerf
 docker pull fedora:42
 docker build --tag danielflook/python-minifier-build:python3.14-$DATE -f Dockerfile-fedora42 --target python3.14 .
 
+docker pull fedora:44
+docker build --tag danielflook/python-minifier-build:python3.15-$DATE -f Dockerfile-fedora44 --target python3.15 .
+
 docker build --tag danielflook/python-minifier-build:fuzz-$DATE -f Dockerfile-fuzz --target fuzz .
 
 docker push danielflook/python-minifier-build:python3.3-$DATE
@@ -50,6 +53,7 @@ docker push danielflook/python-minifier-build:python3.11-$DATE
 docker push danielflook/python-minifier-build:python3.12-$DATE
 docker push danielflook/python-minifier-build:python3.13-$DATE
 docker push danielflook/python-minifier-build:python3.14-$DATE
+docker push danielflook/python-minifier-build:python3.15-$DATE
 docker push danielflook/python-minifier-build:pypy-$DATE
 docker push danielflook/python-minifier-build:pypy3-$DATE
 docker push danielflook/python-minifier-build:fuzz-$DATE
diff --git a/docs/source/installation.rst b/docs/source/installation.rst
@@ -13,4 +13,4 @@ and outputs source code compatible with the version of the interpreter it is run
 This means that if you minify code written for Python 3.6 using python-minifier running with Python 3.12,
 the minified code may only run with Python 3.12.
 
-python-minifier runs with and can minify code written for Python 2.7 and Python 3.3 to 3.14.
+python-minifier runs with and can minify code written for Python 2.7 and Python 3.3 to 3.15.