• lap是使用Jonker-Volgenant算法求解稠密（LAPJV）或稀疏（LAPMOD）矩陣的線性分配問題求解器
• 為了使用模塊lap，結(jié)果pip install lap安裝失敗，命令行提示如下：

ERROR: Command errored out with exit status 1:
     command: 'D:\Anaconda3\envs\tensorflow\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\MSI\\AppData\\Local\\Temp\\pip-req-build-9w1k0u2r\\setup.py'"'"'; __file__='"'"'C:\\Users\\MSI\\AppData\\Local\\Temp\\pip-req-build-9w1k0u2r\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MSI\AppData\Local\Temp\pip-record-xqcdmil9\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Anaconda3\envs\tensorflow\Include\lap'
         cwd: C:\Users\MSI\AppData\Local\Temp\pip-req-build-9w1k0u2r\
    Complete output (30 lines):
    Partial import of lap during the build process.
    Generating cython files
    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 --fcompiler options
    running build_src
    build_src
    building extension "lap._lapjv" sources
    building data_files sources
    build_src: building npy-pkg config files
    running build_py
    creating build
    creating build\lib.win-amd64-3.7
    creating build\lib.win-amd64-3.7\lap
    copying lap\lapmod.py -> build\lib.win-amd64-3.7\lap
    copying lap\__init__.py -> build\lib.win-amd64-3.7\lap
    running build_ext
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    customize MSVCCompiler using build_ext
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    Missing compiler_cxx fix for MSVCCompiler
    customize MSVCCompiler using build_ext
    building 'lap._lapjv' extension
    compiling C sources
    error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'D:\Anaconda3\envs\tensorflow\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\MSI\\AppData\\Local\\Temp\\pip-req-build-9w1k0u2r\\setup.py'"'"'; __file__='"'"'C:\\Users\\MSI\\AppData\\Local\\Temp\\pip-req-build-9w1k0u2r\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\MSI\AppData\Local\Temp\pip-record-xqcdmil9\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Anaconda3\envs\tensorflow\Include\lap' Check the logs for full command output.

一開始在lap的github官網(wǎng)上看見說需要有c的編譯器：lap的官方鏈接

Install from source
Install a C++ compiler (e.g., g++)

Python headers (e.g., python-dev package on Debian/Ubuntu)

Install Cython (>=0.21)

考慮到電腦上并沒有安裝有關(guān)C編譯的軟件，看了下面的解決方案之后：

https://stackoverflow.com/questions/66838238/cython-setup-py-cant-find-installed-visual-c-build-tools/68553226#68553226

• 首先在命令行中查看自己的MSVC version：

python -c "import sys; print(sys.version)"

我的是1916的版本

D:\Program Files (x86)\Microsoft Visual Studio\2017\Community>python -c "import sys; print(sys.version)"
3.7.11 (default, Jul 27 2021, 09:42:29) [MSC v.1916 64 bit (AMD64)]

對應(yīng)的Visual Studio版本是2017，可以在下面的網(wǎng)址自行查看：

https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B

重點來了?。?！
在安裝Visual Studio一開始要選擇工作負(fù)載！我一開始直接默認(rèn)，導(dǎo)致我又失敗了！
后面看了這篇博客Microsoft visual C++ build tools安裝包丟失
我已經(jīng)安裝好了，所以需要重新從這里進(jìn)去工作負(fù)載選擇：

注意！！勾選只用C++的桌面開發(fā)！旁邊的可選保持默認(rèn)就可以了！

文章來源地址http://www.zghlxwxcb.cn/news/detail-443565.html

• 重新回到命令行pip安裝，安裝成功！
  
  看完之后如果解決問題啦！記得評論點個贊！

到了這里，關(guān)于【python】安裝模塊lap出錯： error: Microsoft Visual C++ 14.0 or greater is required.的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！