python - 如何处理 setup.py 中对 scipy 的依赖

Question

我正在尝试为依赖于 SciPy 的项目创建一个 setup.py。以下 setup.py 重现了这一点:

setup(
    name='test',
    version='0.1',
    install_requires=['scipy']
)

使用 python setup.py develop 安装它时会生成以下错误:

ImportError: No module named numpy.distutils.core

但是，当我使用 pip 安装 scipy 时，它是通过轮子安装的，并且工作正常。

所以，我的问题是，如何创建依赖于 SciPy 的 setup.py？为什么 setuptools 不从 wheels 安装依赖项？这在使用 Python 3 时会更好吗(无论如何我们计划迁移，所以如果它在那里工作，我会等到迁移完成)。

我在 Mac OS X 10.10.1 上使用 Python 2.7.8 以及 setuptools 3.6 和 pip 1.5.6。

Answer 1

最终，这对我有用:

#!/usr/bin/env python

from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext as _build_ext

#
# This cludge is necessary for horrible reasons: see comment below and
# http://stackoverflow.com/q/19919905/447288
#
class build_ext(_build_ext):
    def finalize_options(self):
        _build_ext.finalize_options(self)
        # Prevent numpy from thinking it is still in its setup process:
        __builtins__.__NUMPY_SETUP__ = False
        import numpy
        self.include_dirs.append(numpy.get_include())

setup(
    #
    # Amazingly, `pip install scipy` fails if `numpy` is not already installed.
    # Since we cannot control the order that dependencies are installed via
    # `install_requires`, use `setup_requires` to ensure that `numpy` is available
    # before `scipy` is installed.
    #
    # Unfortunately, this is *still* not sufficient: `numpy` has a guard to
    # check when it is in its setup process that we must circumvent with
    # the `cmdclass`.
    #
    setup_requires=['numpy'],
    cmdclass={'build_ext':build_ext},
    install_requires=[
        'numpy',
        'scipy',
    ],
    ...
)