python-graphblas · eriknw · Mar 28, 2026 · Mar 28, 2026 · Mar 28, 2026 · Mar 29, 2026
diff --git a/.flake8 b/.flake8
@@ -11,6 +11,6 @@ extend-ignore =
 # E203 whitespace before ':' (to be compatible with black)
 per-file-ignores =
     scripts/create_pickle.py:F403,F405,
-    graphblas/tests/*.py:T201,
+    graphblas/tests/*.py:T201,B043,
     graphblas/core/ss/matrix.py:SIM113,
     graphblas/**/__init__.py:F401,
diff --git a/.github/workflows/debug.yml b/.github/workflows/debug.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pyver: [3.10]
+        pyver: [3.11]
         testopts:
           - "--blocking"
           # - "--non-blocking --record --runslow"
@@ -26,7 +26,7 @@ jobs:
           # - "conda-forge"
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           persist-credentials: false

diff --git a/.github/workflows/imports.yml b/.github/workflows/imports.yml
@@ -14,7 +14,7 @@ jobs:
       pyver: ${{ steps.pyver.outputs.selected }}
     steps:
       - name: RNG for os
-        uses: ddradar/choose-random-action@v3.0.0
+        uses: ddradar/choose-random-action@v4.1.0
         id: os
         with:
           contents: |
@@ -26,14 +26,14 @@ jobs:
             1
             1
       - name: RNG for Python version
-        uses: ddradar/choose-random-action@v3.0.0
+        uses: ddradar/choose-random-action@v4.1.0
         id: pyver
         with:
           contents: |
-            3.10
             3.11
             3.12
             3.13
+            3.14
           weights: |
             1
             1
@@ -45,14 +45,14 @@ jobs:
     # runs-on: ${{ matrix.os }}
     # strategy:
     #   matrix:
-    #     python-version: ["3.10", "3.11", "3.12", "3.13"]
+    #     python-version: ["3.11", "3.12", "3.13", "3.14"]
     #     os: ["ubuntu-latest", "macos-latest", "windows-latest"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           persist-credentials: false
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ needs.rngs.outputs.pyver }}
           # python-version: ${{ matrix.python-version }}

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
@@ -16,11 +16,11 @@ jobs:
     name: pre-commit-hooks
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           persist-credentials: false
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.10"
+          python-version: "3.11"
       - uses: pre-commit/action@v3.0.1
diff --git a/.github/workflows/publish_pypi.yml b/.github/workflows/publish_pypi.yml
@@ -8,20 +8,19 @@ on:
 jobs:
   build_and_deploy:
     runs-on: ubuntu-latest
-    if: github.repository == 'python-graphblas/python-graphblas'
     defaults:
       run:
         shell: bash -l {0}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           persist-credentials: false
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
-          python-version: "3.10"
+          python-version: "3.11"
       - name: Install build dependencies
         run: |
           python -m pip install --upgrade pip
@@ -36,7 +35,8 @@ jobs:
       - name: Check with twine
         run: python -m twine check --strict dist/*
       - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@v1.12.4
+        uses: pypa/gh-action-pypi-publish@v1.13.0
+        if: startsWith(github.ref, 'refs/tags/') && github.repository == 'python-graphblas/python-graphblas'
         with:
           user: __token__
           password: ${{ secrets.PYPI_TOKEN }}
diff --git a/.github/workflows/test_and_build.yml b/.github/workflows/test_and_build.yml
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -16,135 +16,166 @@ default_language_version:
   python: python3
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-added-large-files
       - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-illegal-windows-names
       - id: check-merge-conflict
-      # - id: check-symlinks
       - id: check-ast
+      - id: check-json # No json files yet
       - id: check-toml
       - id: check-yaml
       - id: check-executables-have-shebangs
       - id: check-vcs-permalinks
+      - id: debug-statements
       - id: destroyed-symlinks
       - id: detect-private-key
-      - id: debug-statements
+      - id: forbid-submodules
       - id: end-of-file-fixer
         exclude_types: [svg]
       - id: mixed-line-ending
       - id: trailing-whitespace
       - id: name-tests-test
         args: ["--pytest-test-first"]
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.23
+    rev: v0.25
     hooks:
       - id: validate-pyproject
         name: Validate pyproject.toml
   # I don't yet trust ruff to do what autoflake does
   - repo: https://github.com/PyCQA/autoflake
-    rev: v2.3.1
+    rev: v2.3.3
     hooks:
       - id: autoflake
         args: [--in-place]
   # We can probably remove `isort` if we come to trust `ruff --fix`,
   # but we'll need to figure out the configuration to do this in `ruff`
   - repo: https://github.com/pycqa/isort
-    rev: 6.0.0
+    rev: 8.0.1
     hooks:
       - id: isort
   # Let's keep `pyupgrade` even though `ruff --fix` probably does most of it
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.19.1
+    rev: v3.21.2
     hooks:
       - id: pyupgrade
-        args: [--py310-plus]
+        args: [--py311-plus]
   - repo: https://github.com/MarcoGorelli/auto-walrus
-    rev: 0.3.4
+    rev: 0.4.1
     hooks:
       - id: auto-walrus
         args: [--line-length, "100"]
-  - repo: https://github.com/psf/black
-    rev: 25.1.0
+  - repo: https://github.com/psf/black-pre-commit-mirror
+    rev: 26.3.1
     hooks:
       - id: black
       - id: black-jupyter
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.9.6
+    rev: v0.15.7
     hooks:
-      - id: ruff
+      - id: ruff-check
         args: [--fix-only, --show-fixes]
   # Let's keep `flake8` even though `ruff` does much of the same.
   # `flake8-bugbear` and `flake8-simplify` have caught things missed by `ruff`.
   - repo: https://github.com/PyCQA/flake8
-    rev: 7.1.2
+    rev: 7.3.0
     hooks:
       - id: flake8
         args: ["--config=.flake8"]
         additional_dependencies:
           &flake8_dependencies # These versions need updated manually
-          - flake8==7.1.2
-          - flake8-bugbear==24.12.12
-          - flake8-simplify==0.21.0
+          - flake8==7.3.0
+          - flake8-bugbear==25.11.29
+          - flake8-simplify==0.30.0
   - repo: https://github.com/codespell-project/codespell
-    rev: v2.4.1
+    rev: v2.4.2
     hooks:
       - id: codespell
-        types_or: [python, rst, markdown]
-        additional_dependencies: [tomli]
+        types_or: [python, markdown, rst, toml, yaml]
+        additional_dependencies:
+          - tomli; python_version<'3.11'
         files: ^(graphblas|docs)/
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.9.6
+    rev: v0.15.7
     hooks:
-      - id: ruff
+      - id: ruff-check
+      # - id: ruff-format  # Prefer black, but may temporarily uncomment this to see
   - repo: https://github.com/sphinx-contrib/sphinx-lint
-    rev: v1.0.0
+    rev: v1.0.2
     hooks:
       - id: sphinx-lint
         args: [--enable, all, "--disable=line-too-long,leaked-markup"]
   # `pyroma` may help keep our package standards up to date if best practices change.
   # This is probably a "low value" check though and safe to remove if we want faster pre-commit.
   - repo: https://github.com/regebro/pyroma
-    rev: "4.2"
+    rev: "5.0.1"
     hooks:
       - id: pyroma
         args: [-n, "10", .]
   - repo: https://github.com/shellcheck-py/shellcheck-py
-    rev: "v0.10.0.1"
+    rev: "v0.11.0.1"
     hooks:
       - id: shellcheck
   - repo: https://github.com/rbubley/mirrors-prettier
-    rev: v3.5.1
+    rev: v3.8.1
     hooks:
       - id: prettier
+        args: [--prose-wrap=preserve]
+  - repo: https://github.com/pre-commit/pygrep-hooks
+    rev: v1.10.0
+    hooks:
+      - id: rst-backticks
+      - id: rst-directive-colons
+      - id: rst-inline-touching-normal
+      - id: python-check-blanket-noqa
+      - id: python-check-blanket-type-ignore
+      - id: python-no-eval
+      - id: python-no-log-warn
+      - id: text-unicode-replacement-char
   - repo: https://github.com/ComPWA/taplo-pre-commit
     rev: v0.9.3
     hooks:
       - id: taplo-format
   - repo: https://github.com/rhysd/actionlint
-    rev: v1.7.7
+    rev: v1.7.11
     hooks:
       - id: actionlint
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.31.1
+    rev: 0.37.0
     hooks:
       - id: check-dependabot
       - id: check-github-workflows
       - id: check-readthedocs
   - repo: https://github.com/adrienverge/yamllint
-    rev: v1.35.1
+    rev: v1.38.0
     hooks:
       - id: yamllint
-  - repo: https://github.com/woodruffw/zizmor-pre-commit
-    rev: v1.3.1
-    hooks:
-      - id: zizmor
+  #  - repo: https://github.com/woodruffw/zizmor-pre-commit
+  #    rev: v1.14.2
+  #    hooks:
+  #      - id: zizmor
   - repo: meta
     hooks:
       - id: check-hooks-apply
       - id: check-useless-excludes
   - repo: local
     hooks:
+      - id: disallow-caps
+        name: Disallow improper capitalization
+        language: pygrep
+        entry: PyBind|Numpy\>|Cmake|CCache|Github|PyTest|\<RST\>|PyLint
+        exclude: (.pre-commit-config.yaml|docs/pages/guides/style\.md)$
+      - id: disallow-words
+        name: Disallow certain words
+        language: pygrep
+        entry: "[Ff]alsey"
+        exclude: .pre-commit-config.yaml$
+      - id: disallow-bad-permalinks
+        name: Disallow _ in permalinks
+        language: pygrep
+        entry: "^permalink:.*_.*"
       # Add `--hook-stage manual` to pre-commit command to run (very slow)
       # It's probably better (and faster!) to simply run `pylint graphblas/some/file.py`
       - id: pylint
@@ -156,7 +187,7 @@ repos:
         args: [graphblas/]
         pass_filenames: false
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: no-commit-to-branch # no commit directly to main
 #

diff --git a/README.md b/README.md
@@ -25,7 +25,7 @@ For algorithms, see
   - **SuiteSparse:GraphBLAS User Guide:** [https://github.com/DrTimothyAldenDavis/GraphBLAS/raw/stable/Doc/GraphBLAS_UserGuide.pdf](https://github.com/DrTimothyAldenDavis/GraphBLAS/raw/stable/Doc/GraphBLAS_UserGuide.pdf)
 - **Source:** [https://github.com/python-graphblas/python-graphblas](https://github.com/python-graphblas/python-graphblas)
 - **Bug reports:** [https://github.com/python-graphblas/python-graphblas/issues](https://github.com/python-graphblas/python-graphblas/issues)
-- **Github discussions:** [https://github.com/python-graphblas/python-graphblas/discussions](https://github.com/python-graphblas/python-graphblas/discussions)
+- **GitHub discussions:** [https://github.com/python-graphblas/python-graphblas/discussions](https://github.com/python-graphblas/python-graphblas/discussions)
 - **Weekly community call:** [python-graphblas#247](https://github.com/python-graphblas/python-graphblas/issues/247) or [https://scientific-python.org/calendars/](https://scientific-python.org/calendars/)
 - **Chat via Discord:** [https://discord.com/invite/vur45CbwMz](https://discord.com/invite/vur45CbwMz) in the [#graphblas channel](https://discord.com/channels/786703927705862175/1024732940233605190)
 
@@ -58,8 +58,7 @@ The following are not required by python-graphblas, but may be needed for certai
 - `pandas` – required for nicer `__repr__`;
 - `matplotlib` – required for basic plotting of graphs;
 - `scipy` – used in `io` module to read/write `scipy.sparse` format;
-- `networkx` – used in `io` module to interface with `networkx` graphs;
-- `fast-matrix-market` - for faster read/write of Matrix Market files with `gb.io.mmread` and `gb.io.mmwrite`.
+- `networkx` – used in `io` module to interface with `networkx` graphs.
 
 ## Description
 

diff --git a/dev-requirements.txt b/dev-requirements.txt
@@ -6,7 +6,7 @@ pyyaml
 pandas
 # For I/O
 awkward
-fast_matrix_market
+# fast_matrix_market is deprecated (no longer maintained; last supported Python is 3.12)
 networkx
 scipy
 sparse

diff --git a/docs/conf.py b/docs/conf.py
@@ -19,7 +19,7 @@
 # -- Project information -----------------------------------------------------
 
 project = "python-graphblas"
-copyright = "2020-2023, Anaconda, Inc. and contributors"
+copyright = "2020-2026, Anaconda, Inc. and contributors"
 author = "Anaconda, Inc"
 
 # The full version, including alpha/beta/rc tags

diff --git a/docs/env.yml b/docs/env.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
   - nodefaults
 dependencies:
-  - python=3.10
+  - python=3.11
   - pip
   # python-graphblas dependencies
   - donfig

diff --git a/docs/getting_started/index.rst b/docs/getting_started/index.rst
@@ -34,7 +34,6 @@ to work.
   - `matplotlib <https://matplotlib.org>`__ -- required for basic plotting of graphs
   - `scipy <https://scipy.org/>`__ -- used in ``io`` module to read/write ``scipy.sparse`` format
   - `networkx <https://networkx.org>`__ -- used in ``io`` module to interface with networkx graphs
-  - `fast-matrix-market <https://github.com/alugowski/fast_matrix_market>`__ -- for faster read/write of Matrix Market files with ``gb.io.mmread`` and ``gb.io.mmwrite``
 
 GraphBLAS Fundamentals
 ----------------------

diff --git a/docs/user_guide/io.rst b/docs/user_guide/io.rst
@@ -146,5 +146,3 @@ and ``gb.io.mmwrite()`` to write a Matrix to a Matrix Market file.
 These names match the equivalent functions in `scipy.sparse <https://docs.scipy.org/doc/scipy/reference/generated/scipy.io.mmread.html>`_.
 
 ``scipy`` is required to be installed to read Matrix Market files.
-If ``fast_matrix_market`` is installed, it will be used by default for
-`much better performance <https://github.com/alugowski/fast_matrix_market>`_.
diff --git a/graphblas/__init__.py b/graphblas/__init__.py
@@ -49,6 +49,7 @@ def get_config():
     "core",
     "dtypes",
     "exceptions",
+    "indexbinary",
     "indexunary",
     "io",
     "monoid",