Visual Studio 19已安装，但找不到Visual Studio 17

Question

我正在使用win 10和Anaconda 4.8.3以及Python 3.7.4。在C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools下，我有SDK。以下是我看到的文件夹:

安装keras（conda install -c conda-forge keras）后，我开始遇到问题。我更新了anaconda，但每次打开anaconda的cmd提示符时，我都会看到以下错误：

C:\Users\MyName>python C:\Users\MyName\Anaconda3\etc\keras\load_config.py  1>temp.txt
C:\Users\MyName>set /p KERAS_BACKEND= 0<temp.txt
C:\Users\MyName>del temp.txt
C:\Users\MyName>python -c "import keras"  1>nul 2>&1

C:\Users\MyName>if errorlevel 1 (
ver  1>nul
 set "KERAS_BACKEND=theano"
python -c "import keras"  1>nul 2>&1
)

 C:\Users\MyName>SET DISTUTILS_USE_SDK=1
 C:\Users\MyName>SET MSSdk=1
 C:\Users\MyName>SET "VS_VERSION=15.0"
 C:\Users\MyName>SET "VS_MAJOR=15"
 C:\Users\MyName>SET "VS_YEAR=2017"
 C:\Users\MyName>set "MSYS2_ARG_CONV_EXCL=/AI;/AL;/OUT;/out"
 C:\Users\MyName>set "MSYS2_ENV_CONV_EXCL=CL"
 C:\Users\MyName>set "PY_VCRUNTIME_REDIST=\bin\vcruntime140.dll"
 C:\Users\MyName>set "CXX=cl.exe"
 C:\Users\MyName>set "CC=cl.exe"
 C:\Users\MyName>set "VSINSTALLDIR="

 C:\Users\MyName>for /F "usebackq tokens=*" %i in (`vswhere.exe -nologo -products * -version 
 [15.0,16.0) -property installationPath`) do (set "VSINSTALLDIR=%i\" )

 C:\Users\MyName>if not exist "" (for /F "usebackq tokens=*" %i in (`vswhere.exe -nologo -products * 
 -requires Microsoft.VisualStudio.Component.VC.v141.x86.x64 -property installationPath`) do (set 
 "VSINSTALLDIR=%i\" ) )

 C:\Users\MyName>if not exist "" (set "VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual 
 Studio\2017\Professional\" )

 C:\Users\MyName>if not exist "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\" 
 (set "VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\" )

  C:\Users\MyName>if not exist "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\" (set 
"VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\" )

C:\Users\MyName>if not exist "C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\" (set 
"VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\" )

  C:\Users\MyName>IF NOT "" == "" (
  set "INCLUDE=;"
  set "LIB=;"
  set "CMAKE_PREFIX_PATH=;"
   )

    C:\Users\MyName>call :GetWin10SdkDir

    C:\Users\MyName>call :GetWin10SdkDirHelper HKLM\SOFTWARE\Wow6432Node  1>nul 2>&1

    C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKCU\SOFTWARE\Wow6432Node  1>nul 2>&1

    C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKLM\SOFTWARE  1>nul 2>&1

    C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKCU\SOFTWARE  1>nul 2>&1

    C:\Users\MyName>if errorlevel 1 exit /B 1

   C:\Users\MyName>exit /B 0

   C:\Users\MyName>for /F %i in ('dir /ON /B "C:\Program Files (x86)\Windows Kits\10\\include\10.*"') 
    DO (SET WindowsSDKVer=%~i )

   C:\Users\MyName>(SET WindowsSDKVer=10.0.18362.0 )

   C:\Users\MyName>if errorlevel 1 (echo "Didn't find any windows 10 SDK. I'm not sure if things will 
 work, but let's try..." )  else (echo Windows SDK version found as: "10.0.18362.0" )
 Windows SDK version found as: "10.0.18362.0"

  C:\Users\MyName>IF "win-64" == "win-64" (
  set "CMAKE_GEN=Visual Studio 15 2017 Win64"
  set "BITS=64"
  )  else (
  set "CMAKE_GEN=Visual Studio 15 2017"
  set "BITS=32"
  )

  C:\Users\MyName>pushd C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\
  The system cannot find the path specified.

  C:\Users\MyName>CALL "VC\Auxiliary\Build\vcvars64.bat" -vcvars_ver=14.16 10.0.18362.0
  The system cannot find the path specified.

  C:\Users\MyName>popd

  C:\Users\MyName>IF "" == "" SET "CMAKE_GENERATOR=Visual Studio 15 2017 Win64"

  C:\Users\MyName>call :GetWin10SdkDirHelper HKLM\SOFTWARE\Wow6432Node  1>nul 2>&1

  C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKCU\SOFTWARE\Wow6432Node  1>nul 2>&1

  C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKLM\SOFTWARE  1>nul 2>&1

  C:\Users\MyName>if errorlevel 1 call :GetWin10SdkDirHelper HKCU\SOFTWARE  1>nul 2>&1

  C:\Users\MyName>if errorlevel 1 exit /B 1

  C:\Users\MyName>exit /B 0

 (base) C:\Users\MyName>

我尝试更新了Anaconda，删除了用户环境变量中的一些旧路径，重启了系统，卸载并重新安装了Keras，但都没有起作用。非常感谢任何帮助。

- Melanie A

---

在Windows上安装任何启用GPU的Python库都是一场绝对的噩梦。无论是在库的官方网站上还是其他地方，都没有可靠的指导。因此，这是我为您推荐的第一步：放弃Windows并转向Linux。最简单的方法是使用Ubuntu LTS版本，因为您可以安装Lambda Labs堆栈，它将为您管理所有正确版本的内容，包括硬件驱动程序（这比Anaconda更好）。 - Adrian Keister

Answer 1

我遇到过类似的问题。看起来与Theano有关。我解决的方法是：

> conda uninstall tensorflow theano
> conda install -c anaconda tensorflow

如果我安装例如pymc3，它会拉取theano，我会再次遇到相同的问题。

- Fredrik Fyring

Answer 2

我不确定这是否有帮助，但我可以提供一些建议来尝试帮助。

1. 您是否仍然安装了Visual Studio 2017？如果您不需要它，也许可以尝试卸载它？
2. 您的Visual Studio 2019是否已添加到路径中？
3. 也许在您想要工作的文件夹中设置一个虚拟环境，并在那里安装/更新Anaconda？

如果其中任何一个有所帮助，请告诉我，祝你好运！

- saundankarro