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Developing C++ extension in Python using pybind11

This is a summary of the commands used in the tutorial. To clone the repository and the submodules, run

git clone --recursive https://github.com/xflash96/pybind11_package_example

Using the Docker developing environment

  • To build the docker image, run cd docker && ./build.sh
  • To run the container, ./run.sh .

See the docker/Dockerfile for the details.

Building the extension and installing the package

  • To build the C++ extension, run python setup.py build_ext -i
  • To install the package, run sudo `which python` setup.py develop

Profiling

line_profiler for the Python code

  • Mark the @profile to the function of interest.
  • Run the profiler via kernprof -l ./bin/example_cmd
  • See the report with python -m line_profiler example_cmd.lprof

Perf for the C++ extension

  • Enable perf in Linux by sudo sh -c 'echo 1 >/proc/sys/kernel/perf_event_paranoid'
  • Profile via perf record bin/example_cmd
  • Show report with perf report

Testing

Use either

  • python setup.py test
  • pytest to run the unit tests.

Releasing the package

  • Pack the source distribution with python setup.py sdist
  • Upload the package with python -m twine upload --repository testpypi dist/*

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Example python package with pybind11 cpp extension

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