如何正确安装 NumPy ufunc？

Question

我正在尝试从 SciPy Docs 安装示例 ufunc 但是当我运行 python setup.py build 或 python setup.py install 我收到一些关于已弃用的 NumPy 的警告 API.

当我运行 python setup.py install 这是输出：

$ python setup.py install
running install
running build
running config_cc
unifing config_cc, config, build_clib, build_ext, build commands --compiler options
running config_fc
unifing config_fc, config, build_clib, build_ext, build commands --fcompileroptions
running build_src
build_src
building extension "npufunc_directory.npufunc" sources
build_src: building npy-pkg config files
running build_ext
customize UnixCCompiler
customize UnixCCompiler using build_ext
building 'npufunc_directory.npufunc' extension
compiling C sources
C compiler: gcc -fno-strict-aliasing -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/usr/src/ports/python/python-2.7.8-1.x86_64/build=/usr/src/debug/python-2.7.8-1 -fdebug-prefix-map=/usr/src/ports/python/python-2.7.8-1.x86_64/src/Python-2.7.8=/usr/src/debug/python-2.7.8-1 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes
creating build
creating build/temp.cygwin-1.7.32-x86_64-2.7
compile options: '-I/usr/lib/python2.7/site-packages/numpy/core/include -I/usr/include/python2.7 -c'
gcc: single_type_logit.c
In file included from /usr/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1728:0,
             from single_type_logit.c:3:
/usr/lib/python2.7/site-packages/numpy/core/include/numpy/npy_deprecated_api.h:11:2: warning: #warning "Using deprecated NumPy API, disable it by #defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp] #warning "Using deprecated NumPy API, disable it by #defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION"
creating build/lib.cygwin-1.7.32-x86_64-2.7
creating build/lib.cygwin-1.7.32-x86_64-2.7/npufunc_directory
gcc -shared -Wl,--enable-auto-image-base -L. build/temp.cygwin-1.7.32-x86_64-2.7/single_type_logit.o -L/usr/lib/python2.7/config -L/usr/lib -lpython2.7 -o build/lib.cygwin-1.7.32-x86_64-2.7/npufunc_directory/npufunc.dll
running scons
running install_lib
copying build/lib.cygwin-1.7.32-x86_64-2.7/npufunc_directory/npufunc.dll -> /usr/lib/python2.7/site-packages/npufunc_directory
running install_egg_info
Removing /usr/lib/python2.7/site-packages/npufunc_directory-0.0.0-py2.7.egg-info
Writing /usr/lib/python2.7/site-packages/npufunc_directory-0.0.0-py2.7.egg-info
running install_clib
customize UnixCCompiler

运行ning python setup.py build 产生：

$ python setup.py build
running build
running config_cc
unifing config_cc, config, build_clib, build_ext, build commands --compiler options
running config_fc
unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options
running build_src
build_src
building extension "npufunc_directory.npufunc" sources
build_src: building npy-pkg config files
running build_ext
customize UnixCCompiler
customize UnixCCompiler using build_ext
running scons

如果我尝试导入我得到的模块：

Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import npufunc
ImportError: No module named npufunc

有谁知道如何进行这项工作？

Answer 1

根据documentation "The __init__.py files are required to make Python treat the directories as containing packages"。 Numpy 文档中的 setup.py 不会创建此文件，因此 Python 不会导入任何内容，因为它会忽略此目录。

解决方案：只需在/usr/local/lib/python2.7/dist-packages/npufunc_directory目录中添加一个空的__init__.py文件，例如sudo touch __init__.py然后尝试：

>>> from npufunc_directory import npufunc
>>> npufunc.logit(.5)
0.0

或者，将 import npufunc 添加到 __init__.py，然后您可以：

>>> import npufunc_directory
>>> npufunc_directory.npufunc.logit(0.5)
0.0

如何正确安装 NumPy ufunc？

How to properly install a NumPy ufunc?

numpy

python-2.7

numpy-ufunc