c2f 1.0.5

2019年SF Python假日派对

Python是解释型还是编译型？

c2f.py

"Celsius to Fahrenheit Library"

def convert(celsius: float) -> float:
    "Convert Celsius to Fahrenheit"
    fahrenheit = celsius * 1.8 + 32
    return fahrenheit

c2f.cpython-38.pyc

>>> import c2f
>>> dis.dis(c2f.convert)
  6           0 LOAD_FAST                0 (celsius)
              2 LOAD_CONST               1 (1.8)
              4 BINARY_MULTIPLY
              6 LOAD_CONST               2 (32)
              8 BINARY_ADD
             10 STORE_FAST               1 (fahrenheit)
  7          12 LOAD_FAST                1 (fahrenheit)
             14 RETURN_VALUE

setup.py

from setuptools import setup
from Cython.Build import cythonize

setup(
    name='c2f',
    version='0.0.0',
    py_modules=['c2f'],
    ext_modules=cythonize('c2f.py'),
)

c2f.c

$ cython c2f.py

static PyObject * __pyx_convert(double __pyx_v_celsius)
{
  double __pyx_v_fahrenheit;
  PyObject *__pyx_r = NULL;
  __pyx_v_fahrenheit = ((__pyx_v_celsius * 1.8) + 32.0);
  __pyx_r = PyFloat_FromDouble(__pyx_v_fahrenheit);
  return __pyx_r;
}

c2f.so

$ python setup.py bdist_wheel

___pyx_convert:
push   rbp
mov    rbp, rsp
sub    rsp, 16
movsd  xmm0, qword ptr [rbp - 8]
mulsd  xmm0, qword ptr [rip + 1379]
addsd  xmm0, qword ptr [rip + 1379]
call   502 <PyFloat_FromDouble ...>
add    rsp, 16
pop    rbp
ret

.github/workflows/release.yml

name: release
on:
  push:
    tags:
      - v*
jobs:
  build-linux-cp38:
    runs-on: ubuntu-latest
    container: quay.io/pypa/manylinux2014_x86_64
    steps:
    ...

矩阵构建

build-macos:
  runs-on: macos-latest
  strategy:
    max-parallel: 4
    matrix:
      python-version: [3.5, 3.6, 3.7, 3.8]
  steps:
  ...

Mac构建步骤

- name: Set up Python ${{ matrix.python-version }} x64
  uses: actions/setup-python@v1
  with:
    python-version: ${{ matrix.python-version }}
    architecture: x64

- name: Install package dependencies
  run: pip install cython wheel

- name: Build binary wheel
  run: python setup.py bdist_wheel

Linux auditwheel工具

- name: Build binary wheel
  run: /opt/python/cp38-cp38/bin/python setup.py bdist_wheel

- name: Apply auditwheel for manylinux wheel
  run: auditwheel repair -w dist dist/*

- name: Remove linux wheel
  run: rm dist/*-linux_x86_64.whl

Windows构建步骤

- name: Download Build Tools for Visual Studio 2019
  run: Invoke-WebRequest -Uri https://aka.ms/vs/16/rel...

- name: Run vs_buildtools.exe install
  run: ./vs_buildtools.exe --quiet --wait --norestart ...

存储构建工件

- name: Archive dist artifacts
  uses: actions/upload-artifact@v1
  with:
    name: dist-macos-${{ matrix.python-version }}
    path: dist

源分发

upload:
  needs: [build-linux-cp35, ...]
  runs-on: ubuntu-latest
  steps:
  ...
  - name: Install dependencies
    run: pip install -r requirements.txt

  - name: Create source dist
    run: python setup.py sdist

阶段二进制轮子

- name: Stage linux 3.8
  uses: actions/download-artifact@v1
  with:
    name: dist-linux-3.8
- run: mv -v dist-linux-3.8/* dist/

- name: Stage macos 3.8
  uses: actions/download-artifact@v1
  with:
    name: dist-macos-3.8
- run: mv -v dist-macos-3.8/* dist/
...

使用Twine上传

- name: Upload with twine
  env:
    TWINE_USERNAME: ${{ secrets.TWINE_USERNAME }}
    TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
  run: |
    ls -l dist/*
    pip install twine
    twine upload dist/*

将所有东西都Cython化！

请偷走这段代码！

将所有东西都Cython化！

将所有东西都Cython化！

将所有东西都Cython化！

将所有东西都Cython化！

将所有东西都Cython化！

将所有东西都Cython化！

附录

$ gcc -g -shared -pthread -fPIC -fwrapv -O2 -Wall -fno-strict-aliasing -I/Library/Frameworks/Python.framework/Versions/3.8/include/python3.8 -L/Library/Frameworks/Python.framework/Versions/3.8/lib -o c2f.so c2f.c -lpython3.8
$ objdump -S -df=___pyx_pw_3c2f_1convert c2f.so

$ git tag -a v0.0.2 -m v0.0.2
$ git push
$ git push --tags