无法使用 python 3.8 安装 cvxpy

Question

我已经尝试为 python 安装 cvxpy (https://www.cvxpy.org/install/)。我在所有项目中都使用 Python 3.8，并且不喜欢在使用 3.7 的地方制作虚拟环境。有没有人修复在 python 3.8 上使用 cvxpy（我使用的是 windows）？

谢谢！

ERROR: Command errored out with exit status 1:
ommand: 'AppData\Local\Programs\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'AppData\\Local\\Temp\\pip-install-kehvj2di\\osqp\\setup.py'"'"'; __file__='"'"'AppData\\Local\\Temp\\pip-install-kehvj2di\\osqp\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'AppData\Local\Temp\pip-record-1u4al7gt\install-record.txt' --single-version-externally-managed --compile
cwd: AppData\Local\Temp\pip-install-kehvj2di\osqp\

-- Selecting Windows SDK version  to target Windows 10.0.18362.
    CMake Error at CMakeLists.txt:5 (project):
      Failed to run MSBuild command:

        MSBuild.exe

      to get the value of VCTargetsPath:

        The system cannot find the file specified



    -- Configuring incomplete, errors occurred!
    See also "AppData/Local/Temp/pip-install-kehvj2di/osqp/osqp_sources/build/CMakeFiles/CMakeOutput.log".
    The system cannot find the file specified
    CMake Error: Generator: execution of make failed. Make command was: MSBuild.exe osqpstatic.vcxproj /p:Configuration=Release /p:Platform=x64 /p:VisualStudioVersion=14.0 /v:m &&
    error: [Errno 2] No such file or directory: 'osqp_sources\\build\\out\\Release\\osqp.lib'
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'AppData\Local\Programs\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'Local\\Temp\\pip-install-kehvj2di\\osqp\\setup.py'"'"'; __file__='"'"'AppData\\Local\\Temp\\pip-install-kehvj2di\\osqp\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'AppData\Local\Temp\pip-record-1u4al7gt\install-record.txt' --single-version-externally-managed --compile Check the logs for full command output.
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

Answer 1

您的问题似乎不是 Python 版本，而是缺少构建工具。安装 Microsoft Visual Build Tools 并确保它们在 PATH 上（以便 conda 可以执行 MSBuild.exe）。

从cvxpy 构建工具installation instructions（在pptx 中）。