hgraph

A functional reactive programming engine with a Python front-end.

This provides a DSL and runtime to support the computation of results over time, featuring a graph based directed acyclic dependency graph and the concept of time-series properties. The language is function-based, and promotes composition to extend behaviour.

Here is a simple example:

from hgraph import graph, evaluate_graph, GraphConfiguration, const, debug_print

@graph
def main():
    a = const(1)
    c = a + 2
    debug_print("a + 2", c)

evaluate_graph(main, GraphConfiguration())

Results in:

[1970-01-01 00:00:00.000385][1970-01-01 00:00:00.000001] a + 2: 3

See this for more information.

Development

The project is currently configured to make use of uv for dependency management. Take a look at the website to see how best to install the tool.

Here are some useful commands:

First, create a virtual environment in the project directory:

uv venv

Then use the following command to install the project and its dependencies:

# Install the project with all dependencies
uv pip install -e .

# Install with optional dependencies
uv pip install -e ".[docs,web,notebook]"

# Install with all optional dependencies
uv pip install -e ".[docs,web,notebook,test]"

PyCharm can make use of the virtual environment created by uv to setup the project.

Run Tests

# No Coverage
python -m pytest

# Generate Coverage Report
python -m pytest --cov=hgraph --cov-report=xml

Indexing with Context7 MCP

This repository includes a baseline configuration for Context7 MCP to improve code search and retrieval quality.

  • See docs/context7_indexing.md for guidance.
  • The root-level context7.yaml config sets sensible include/exclude rules, priorities, and summarization hints.

Packaging, CI, and Releases

This project uses scikit-build-core and cibuildwheel to build and publish cross-platform wheels, with uv as the package/venv manager.

  • Local build (PEP 517):

    # Build a wheel into dist/
uv build -v
# Optionally build sdist too
uv build -v --sdist

  • Optional Conan (developer builds only):

    # Conan is not required for packaging but may be used in local builds
uv tool install conan
# Example of enabling Conan provider for a local build
CMAKE_ARGS="-DCMAKE_PROJECT_TOP_LEVEL_INCLUDES=conan_provider.cmake" uv build -v

  • macOS notes:

    • Wheels target Apple Silicon (arm64) and require a macOS deployment target high enough for libc++ floating-point to_chars used by std::format.
    • The build system enforces MACOSX_DEPLOYMENT_TARGET=15.0 (arm64) during Release Wheels and sets a default in CMake if unset.
    • You can override locally via: 
      CMAKE_ARGS="-DCMAKE_OSX_DEPLOYMENT_TARGET=15.0 -DCMAKE_OSX_ARCHITECTURES=arm64" uv build -v

  • Windows notes:

    • Build uses MSVC (Visual Studio 2022, x64). No MinGW.
    • If stack traces via backward-cpp are enabled, Windows links Dbghelp and Imagehlp automatically.

  • Linux notes:

    • Release wheels are built inside manylinux containers; optional backward-cpp integrations are disabled there for portability.

CI summary

  • .github/workflows/ci.yml builds wheels on Linux/macOS/Windows for smoke validation, runs tests on Linux only (fast path), and repairs Linux wheels with auditwheel.
  • .github/workflows/release-wheels.yml builds publish-grade wheels with cibuildwheel (Linux manylinux, macOS arm64, Windows AMD64), builds an sdist, validates with twine, and publishes to PyPI via Trusted Publishing.

Releasing (tag-driven)

Releases are automated via GitHub Actions with PyPI Trusted Publishing.

Prerequisites:

  • Enable Trusted Publishing for this GitHub repository in the PyPI project settings (Project → Settings → Trusted Publishers). No API token is needed once OIDC is configured.
  • Ensure pyproject.toml [project].version matches the tag you plan to push (e.g., 0.4.112).

Steps:

# Update version in pyproject.toml to match your release
# Then tag and push the tag to trigger the release workflow

git tag -a v_0.4.112 -m "release 0.4.112"
git push origin v_0.4.112

The workflow will:

  • Build wheels for Linux (manylinux), macOS (arm64, macOS 15.0 target), and Windows (AMD64, MSVC)
  • Build an sdist
  • Validate with twine check
  • Publish all distributions to PyPI (skips existing files)

Artifacts are uploaded for inspection as part of the workflow run.

CLion configuration tips

  • Use the project venv Python for nanobind discovery:
    • CMake option: -DPython_EXECUTABLE=${PROJECT_ROOT}/.venv/bin/python
  • If you need Conan, use the preamble to ensure Python/nanobind are discovered first, then the Conan provider:
    • CMake option: -DCMAKE_PROJECT_TOP_LEVEL_INCLUDES=${PROJECT_ROOT}/conan_preamble.cmake;${PROJECT_ROOT}/conan_provider.cmake
  • Select the _hgraph target to build the extension.

Troubleshooting

  • Nanobind not found / Python ordering in CMake:
    • Pass -DPython_EXECUTABLE=... (or -DPython3_EXECUTABLE=...) and, if using Conan, use the conan_preamble.cmake before conan_provider.cmake.
  • I also find it helpful to perform an uv sync with at least --all-groups before setting up the cmake.

Project links

Data verified by PyPI on Jul 26, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Newer release available (0.8.22)

1 maintainer

PyPI data
Data sourced directly from PyPI's database.
Avatar for hhenson from gravatar.com hhenson

Credits

Author: Howard Henson

GitHub Statistics

Data verified by PyPI on Jul 26, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License

MIT

Requires

Python <3.15, >=3.12

Provides Extra

web messaging notebook docs test dev

Tags

reactive graph fpg forward propogating graph time series functional reactive programming frp functional time-series

Classifiers

Report project as malware

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

hgraph-0.5.30.tar.gz (5.5 MB view details)

Uploaded Source

Built Distributions

If you're not sure about the file name format, learn more about wheel file names.

hgraph-0.5.30-cp312-abi3-win_amd64.whl (1.6 MB view details)

Uploaded CPython 3.12+Windows x86-64

hgraph-0.5.30-cp312-abi3-musllinux_1_2_x86_64.whl (2.2 MB view details)

Uploaded CPython 3.12+musllinux: musl 1.2+ x86-64

hgraph-0.5.30-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl (1.8 MB view details)

Uploaded CPython 3.12+manylinux: glibc 2.27+ x86-64manylinux: glibc 2.28+ x86-64

hgraph-0.5.30-cp312-abi3-macosx_15_0_arm64.whl (1.5 MB view details)

Uploaded CPython 3.12+macOS 15.0+ ARM64

File details

Details for the file hgraph-0.5.30.tar.gz.

File metadata

  • Download URL: hgraph-0.5.30.tar.gz
  • Upload date:
  • Size: 5.5 MB
  • Tags: Source
  • Uploaded using Trusted Publishing? Yes
  • Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hgraph-0.5.30.tar.gz
Algorithm Hash digest
SHA256 9c02ab00c74630c73c54020b7ac343b3ee79792b274f11ccdd2e5911b8c46826
MD5 2b57cf085fbf2ff57042d0360b744d84
BLAKE2b-256 818bd8917689d1840bfbc23d890d3a16833423bff29eb2e29558e1d4a8a69e6f

See more details on using hashes here.

Provenance

The following attestation bundles were made for hgraph-0.5.30.tar.gz:

Publisher: release-wheels.yml on hhenson/hgraph

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file hgraph-0.5.30-cp312-abi3-win_amd64.whl.

File metadata

  • Download URL: hgraph-0.5.30-cp312-abi3-win_amd64.whl
  • Upload date:
  • Size: 1.6 MB
  • Tags: CPython 3.12+, Windows x86-64
  • Uploaded using Trusted Publishing? Yes
  • Uploaded via: twine/6.1.0 CPython/3.13.14

File hashes

Hashes for hgraph-0.5.30-cp312-abi3-win_amd64.whl
Algorithm Hash digest
SHA256 399a8482f430209b377ec7bd89da0bfd03ba656c21d2207d97d6bbe67f6b7d07
MD5 62cd9d6d26a722531c90138e31f4b5d3
BLAKE2b-256 24f4294b2eda4b475306813b89cd9329de6b0975f849fa986387100a4e12ecf3

See more details on using hashes here.

Provenance

The following attestation bundles were made for hgraph-0.5.30-cp312-abi3-win_amd64.whl:

Publisher: release-wheels.yml on hhenson/hgraph

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file hgraph-0.5.30-cp312-abi3-musllinux_1_2_x86_64.whl.

File metadata

File hashes

Hashes for hgraph-0.5.30-cp312-abi3-musllinux_1_2_x86_64.whl
Algorithm Hash digest
SHA256 55f410967f1a4243138983163236032ccb0cf14930894e61c92ed5f781f855ae
MD5 c839ecb5b7d70a4b3d334af8588d17c0
BLAKE2b-256 9176fdb39c4d1c4a41f341c258fdded9072178ae46ec2a1bdc3246038ecd20cf

See more details on using hashes here.

Provenance

The following attestation bundles were made for hgraph-0.5.30-cp312-abi3-musllinux_1_2_x86_64.whl:

Publisher: release-wheels.yml on hhenson/hgraph

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file hgraph-0.5.30-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl.

File metadata

File hashes

Hashes for hgraph-0.5.30-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl
Algorithm Hash digest
SHA256 ea0f4e7f4cb6a03313712cc41259e2675364a7762c05ef98d2221d168b069f4f
MD5 6130426a0b445b8fb72d052e0e8cb3a7
BLAKE2b-256 e920e79c93704d928c8da1444e3beb7e6efaa265f0f26be370bcee6a8336dff3

See more details on using hashes here.

Provenance

The following attestation bundles were made for hgraph-0.5.30-cp312-abi3-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl:

Publisher: release-wheels.yml on hhenson/hgraph

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file hgraph-0.5.30-cp312-abi3-macosx_15_0_arm64.whl.

File metadata

File hashes

Hashes for hgraph-0.5.30-cp312-abi3-macosx_15_0_arm64.whl
Algorithm Hash digest
SHA256 472412a86d1b4860faae36cbe8d5ea3f80764d83a86e08127b1f2f543e7936d1
MD5 5b7c4e092e4a245e9710a71dc214748c
BLAKE2b-256 fc222dd6de7bef0585dda75e22e9b1b2c53e02594032dd266bfae605c79627b2

See more details on using hashes here.

Provenance

The following attestation bundles were made for hgraph-0.5.30-cp312-abi3-macosx_15_0_arm64.whl:

Publisher: release-wheels.yml on hhenson/hgraph

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Release history Release notifications | RSS feed

0.8.22

4 files

0.8.21

4 files

0.8.20

4 files

0.8.19

4 files

0.8.18

4 files

0.8.17

4 files

0.8.16

4 files

0.8.15

4 files

0.8.14

4 files

0.8.13

4 files

0.8.12

4 files

0.8.11

4 files

0.8.10

4 files

0.8.9

4 files

0.8.8

4 files

0.8.7

4 files

0.8.6

4 files

0.8.5

4 files

0.8.4

4 files

0.8.3

4 files

0.8.2

4 files

0.8.1

4 files

0.8.0

4 files

0.5.42

5 files

0.5.41

5 files

0.5.40

5 files

0.5.39

5 files

0.5.38

5 files

0.5.36

5 files

0.5.35

5 files

0.5.34

5 files

0.5.33

5 files

0.5.32

5 files

0.5.31

5 files

This release

0.5.30 This release

5 files

0.5.29

5 files

0.5.28

5 files

0.5.27

5 files

0.5.26

5 files

0.5.25

5 files

0.5.24

5 files

0.5.23

5 files

0.5.22

5 files

0.5.21

5 files

0.5.20

5 files

0.5.19

5 files

0.5.18

5 files

0.5.17

5 files

0.5.16

5 files

0.5.15

5 files

0.5.14

5 files

0.5.13

5 files

0.5.12

5 files

0.5.11

5 files

0.5.10

5 files

0.5.9

5 files

0.5.8

5 files

0.5.7

5 files

0.5.6

5 files

0.5.5

5 files

0.5.4

5 files

0.5.3

5 files

0.5.2

5 files

0.5.1

5 files

0.5.0

5 files

0.4.102

6 files

0.4.101

2 files

0.4.100

2 files

0.4.99

2 files

0.4.98

2 files

0.4.97

2 files

0.4.96

2 files

0.4.95

2 files

0.4.94

2 files

0.4.93

2 files

0.4.92

2 files

0.4.91

2 files

0.4.90

2 files

0.4.89

2 files

0.4.88

2 files

0.4.87

2 files

0.4.86

2 files

0.4.85

2 files

0.4.84

2 files

0.4.83

2 files

0.4.82

2 files

0.4.81

2 files

0.4.80

2 files

0.4.79

2 files

0.4.78

2 files

0.4.77

2 files

0.4.76

2 files

0.4.75

2 files

0.4.74

2 files

0.4.73

2 files

0.4.72

2 files

0.4.71

2 files

0.4.70

2 files

0.4.69

2 files

0.4.68

2 files

0.4.67

2 files

0.4.66

2 files

0.4.65

2 files

0.4.64

2 files

0.4.63

2 files

0.4.62

2 files

0.4.61

2 files

0.4.60

2 files

0.4.59

2 files

0.4.58

2 files

0.4.57

2 files

0.4.56

2 files

0.4.55

2 files

0.4.54

2 files

0.4.53

2 files

0.4.52

2 files

0.4.51

2 files

0.4.50

2 files

0.4.49

2 files

0.4.48

2 files

0.4.47

2 files

0.4.46

2 files

0.4.45

2 files

0.4.44

2 files

0.4.43

2 files

0.4.42

2 files

0.4.41

2 files

0.4.40

2 files

0.4.39

2 files

0.4.38

2 files

0.4.37

2 files

0.4.36

2 files

0.4.35

2 files

0.4.34

2 files

0.4.32

2 files

0.4.31

2 files

0.4.30

2 files

0.4.29

2 files

0.4.28

2 files

0.4.27

2 files

0.4.26

2 files

0.4.25

2 files

0.4.24

2 files

0.4.23

2 files

0.4.22

2 files

0.4.21

2 files

0.4.20

2 files

0.4.19

2 files

0.4.18

2 files

0.4.17

2 files

0.4.16

2 files

0.4.15

2 files

0.4.14

2 files

0.4.13

2 files

0.4.12

2 files

0.4.11

2 files

0.4.10

2 files

0.4.9

2 files

0.4.8

2 files

0.4.7

2 files

0.4.6

2 files

0.4.5

2 files

0.4.4

2 files

0.4.3

2 files

0.4.2

2 files

0.4.1

2 files

0.4.0

2 files

0.3.60

2 files

0.3.59

2 files

0.3.58

2 files

0.3.57

2 files

0.3.56

2 files

0.3.55

2 files

0.3.54

2 files

0.3.53

2 files

0.3.52

2 files

0.3.51

2 files

0.3.50

2 files

0.3.49

2 files

0.3.48

2 files

0.3.47

2 files

0.3.46

2 files

0.3.45

2 files

0.3.44

2 files

0.3.43

2 files

0.3.42

2 files

0.3.41

2 files

0.3.40

2 files

0.3.38

2 files

0.3.37

2 files

0.3.35

2 files

0.3.34

2 files

0.3.33

2 files

0.3.32

2 files

0.3.31

2 files

0.3.30

2 files

0.3.28

2 files

0.3.27

2 files

0.3.26

2 files

0.3.25

2 files

0.3.24

2 files

0.3.23

2 files

0.3.21

2 files

0.3.20

2 files

0.3.19

2 files

0.3.18

2 files

0.3.17

2 files

0.3.16

2 files

0.3.15

2 files

0.3.14

2 files

0.3.13

2 files

0.3.12

2 files

0.3.11

2 files

0.3.10

2 files

0.3.9

2 files

0.3.8

2 files

0.3.7

2 files

0.3.6

2 files

0.3.5

2 files

0.3.4

2 files

0.3.3

2 files

0.3.2

2 files

0.3.1

2 files

0.3.0

2 files

0.2.54

2 files

0.2.53

2 files

0.2.52

2 files

0.2.51

2 files

0.2.50

2 files

0.2.49

2 files

0.2.48

2 files

0.2.47

2 files

0.2.46

2 files

0.2.45

2 files

0.2.44

2 files

0.2.43

2 files

0.2.42

2 files

0.2.41

2 files

0.2.40

2 files

0.2.39

2 files

0.2.38

2 files

0.2.37

2 files

0.2.36

2 files

0.2.34

2 files

0.2.33

2 files

0.2.32

2 files

0.2.31

2 files

0.2.30

2 files

0.2.29

2 files

0.2.28

2 files

0.2.27

2 files

0.2.26

2 files

0.2.25

2 files

0.2.24

2 files

0.2.23

2 files

0.2.22

2 files

0.2.21

2 files

0.2.20

2 files

0.2.19

2 files

0.2.18

2 files

0.2.17

2 files

0.2.16

2 files

0.2.15

2 files

0.2.14

2 files

0.2.13

2 files

0.2.12

2 files

0.2.11

2 files

0.2.10

2 files

0.2.9

2 files

0.2.8

2 files

0.2.7

2 files

0.2.6

2 files

0.2.5

1 file

0.2.4

2 files

0.2.3

2 files

0.2.2

2 files

0.2.1

2 files

0.2.0

2 files

0.1.19

2 files

0.1.18

2 files

0.1.17

2 files

0.1.16

2 files

0.1.15

2 files

0.1.14

2 files

0.1.13

2 files

0.1.12

2 files

0.1.11

2 files

0.1.10

2 files

0.1.9

2 files

0.1.8

2 files

0.1.7

2 files

0.1.6

2 files

0.1.5

2 files

0.1.4

2 files

0.1.3

2 files

0.1.2

2 files

0.1.1

2 files

0.1.0

2 files

0.0.11

2 files

0.0.10

2 files

0.0.9

2 files

0.0.8

2 files

0.0.7

2 files

0.0.6

2 files

0.0.5

2 files

0.0.4

2 files

0.0.3

2 files

0.0.2

2 files

0.0.1

2 files

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page