Python3中pip install smac报错，pip install pyrfr报错解决办法

报错，pip install pyrfr报错解决办法"/>

Python3中pip install smac报错，pip install pyrfr报错解决办法

 环境：python3.11；软件：vscode

Collecting pyrfrUsing cached pyrfr-0.9.0.tar.gz (295 kB)Preparing metadata (setup.py) ... done
Building wheels for collected packages: pyrfrBuilding wheel for pyrfr (setup.py) ... errorerror: subprocess-exited-with-error× python setup.py bdist_wheel did not run successfully.│ exit code: 1╰─> [6 lines of output][<setuptools.extension.Extension('pyrfr._regression') at 0x224560e2d10>, <setuptools.extension.Extension('pyrfr._util') at 0x2245845ffd0>]Deprecated command line option: -modern. Ignored, this option is now always on.Deprecated command line option: -py3. Ignored, this option is no longer supported..\include\rfr\nodes\k_ary_node.hpp(1) : Warning 401: Nothing known about base class 'k_ary_node_minimal< 2,rfr::splits::binary_split_one_feature_rss_loss< double,double,unsigned int,std::default_random_engine,128 >,double,double,unsigned int,std::default_random_engine >'. Ignored..\include\rfr\nodes\k_ary_node.hpp(1) : Warning 401: Maybe you forgot to instantiate 'k_ary_node_minimal< 2,rfr::splits::binary_split_one_feature_rss_loss< double,double,unsigned int,std::default_random_engine,128 >,double,double,unsigned int,std::default_random_engine >' using %template.error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": /[end of output]note: This error originates from a subprocess, and is likely not a problem with pip.ERROR: Failed building wheel for pyrfrRunning setup.py clean for pyrfr
Failed to build pyrfr
ERROR: Could not build wheels for pyrfr, which is required to install pyproject.toml-based projects

Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": /

报错原因：由于没有合适的C++版本用来对pyrfr包进行编译，需要安装Microsoft C++ build tools的拓展资源。

解决办法：可以使用离线资源进行安装（csdn上有资源，这种方式使用内存较小），也可以在上面的网址下载，打开官方安装器，进行安装（占据空间较大），选择C++官方工具。

若依然安装失败，可能由于系统无SWIG软件，这里参考Openbox的解决方法：

1. 从 SWIG 下载页面 下载 SWIG 的 Windows 版。 点击 All releases ，而后选择 ‘swigwin’ 文件夹。我们推荐安装版本 3.0.12。在下载后解压文件。

2. 把 SWIG 文件夹添加到系统路径

完成SWIG的安装以及加入环境变量后，且上述C++环境已经满足，再在终端运行pip install pyrfr；

然后安装成功，可以继续安装smac等包：

pip install smac