python - mac安装scipy找不到fortran

Question

我在安装 scipy 时遇到了很大的麻烦。

当我运行时: pip 安装 scipy

我得到:

Requirement already satisfied (use --upgrade to upgrade): scipy in 
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python

但是，当我在 python 中导入 scipy 时，我收到 no module called scipy 错误。

当我尝试通过 easy_install scipy 时，它开始下载，然后给我:

error: Setup script exited with error: library dfftpack has Fortran sources but no Fortran compiler found

当我尝试通过brew 安装gfortran 时，我得到:brew gfortran

Error: No available formula for gfortran 
GNU Fortran is now provided as part of GCC, and can be installed with:
brew install gcc

但是当我尝试这样做时，我得到:

(py)Shopkicks-MacBook-Air-12:shopkick markthornburg$ brew install gcc
Warning: gcc-5.2.0 already installed, it's just not linked

我做错了什么？

Answer 1

您是否尝试过手动将 gfortran 链接到 /usr/local/bin，例如:

ln -s /usr/local/Cellar/gfortran/4.8.2/bin/gfortran /usr/local/bin/

您可能需要根据安装的版本替换 gfortran 的路径。

您可能还想设置:

export LD_LIBRARY_PATH=/usr/local/Cellar/gfortran/4.8.2/gfortran/lib:$LD_LIBRARY_PATH
export CPLUS_INCLUDE_PATH=/usr/local/Cellar/gfortran/4.8.2/gfortran/include/c++/4.8.2:$CPLUS_INCLUDE_PATH

同样，这些路径可能需要在您的系统上更改(取决于版本)