我能'；t pip在Python3.9上安装Jupyter笔记本

这是我在尝试pip安装笔记本时遇到的错误。 我正在使用Python3.9。我安装了VC++的构建工具，重新启动了我的机器。 似乎仍然无法安装jupyter，有人能帮我吗？谢谢

  ERROR: Command errored out with exit status 1:
   command: 'c:\users\sahi0h\appdata\local\programs\python\python39\python.exe' 'c:\users\sahi0h\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\sahi0h\AppData\Local\Temp\tmpgkwkmc6k'
       cwd: C:\Users\sahi0h\AppData\Local\Temp\pip-install-29y4gn0n\argon2-cffi
  Complete output (25 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.9
  creating build\lib.win-amd64-3.9\argon2
  copying src\argon2\exceptions.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\low_level.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\_ffi_build.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\_legacy.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\_password_hasher.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\_utils.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\__init__.py -> build\lib.win-amd64-3.9\argon2
  copying src\argon2\__main__.py -> build\lib.win-amd64-3.9\argon2
  running build_clib
  building 'argon2' library
  creating build\temp.win-amd64-3.9
  creating build\temp.win-amd64-3.9\extras
  creating build\temp.win-amd64-3.9\extras\libargon2
  creating build\temp.win-amd64-3.9\extras\libargon2\src
  creating build\temp.win-amd64-3.9\extras\libargon2\src\blake2
  C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.27.29110\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Iextras\libargon2\src\..\include -Iextras\libargon2\src\blake2 -IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.27.29110\include /Tcextras\libargon2\src\argon2.c /Fobuild\temp.win-amd64-3.9\extras\libargon2\src\argon2.obj
  argon2.c
  extras\libargon2\src\argon2.c(18): fatal error C1083: Cannot open include file: 'string.h': No such file or directory
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.27.29110\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
  ----------------------------------------
  ERROR: Failed building wheel for argon2-cffi
Failed to build argon2-cffi
ERROR: Could not build wheels for argon2-cffi which use PEP 517 and cannot be installed directly```

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找到了一种解决方案——我卸载了Python3.9并安装了Python3.8。Pip安装正在运行。

这是否回答了您的问题？