在下载VS2017构建工具和Python 3.9之后，我尝试安装JupyterLab：
组态操作系统：Windows 10 Pro 64位（10.0，内部版本19041）（19041.vb_release.191206-1406）
处理器：Intel（R）CoreTM i5-5300U CPU @ 2.30GHz（4个CPU），〜2.3GHz
内存：16384MB RAM
Python版本：3.9.0
空闲：Vs2017 Professional 15.9.28（包括构建工具）
pip install jupyterlab
我明白了：
Collecting jupyterlab
Using cached jupyterlab-2.2.9-py3-none-any.whl (7.9 MB)
Collecting jinja2>=2.10
Using cached Jinja2-2.11.2-py2.py3-none-any.whl (125 kB)
Collecting tornado!=6.0.0,!=6.0.1,!=6.0.2
Using cached tornado-6.0.4.tar.gz (496 kB)
Collecting jupyterlab-server<2.0,>=1.1.5
Using cached jupyterlab_server-1.2.0-py3-none-any.whl (29 kB)
Collecting notebook>=4.3.1
Using cached notebook-6.1.4-py3-none-any.whl (9.5 MB)
Collecting MarkupSafe>=0.23
Using cached MarkupSafe-1.1.1.tar.gz (19 kB)
Collecting requests
Using cached requests-2.24.0-py2.py3-none-any.whl (61 kB)
Collecting jsonschema>=3.0.1
Using cached jsonschema-3.2.0-py2.py3-none-any.whl (56 kB)
Collecting json5
Using cached json5-0.9.5-py2.py3-none-any.whl (17 kB)
Collecting ipykernel
Using cached ipykernel-5.3.4-py3-none-any.whl (120 kB)
Collecting terminado>=0.8.3
Using cached terminado-0.9.1-py3-none-any.whl (13 kB)
Collecting jupyter-client>=5.3.4
Using cached jupyter_client-6.1.7-py3-none-any.whl (108 kB)
Collecting argon2-cffi
Using cached argon2-cffi-20.1.0.tar.gz (1.8 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... done
Collecting prometheus-client
Using cached prometheus_client-0.8.0-py2.py3-none-any.whl (53 kB)
Collecting pyzmq>=17
Using cached pyzmq-19.0.2-cp39-cp39-win_amd64.whl (695 kB)
Collecting nbconvert
Using cached nbconvert-6.0.7-py3-none-any.whl (552 kB)
Collecting ipython-genutils
Using cached ipython_genutils-0.2.0-py2.py3-none-any.whl (26 kB)
Collecting traitlets>=4.2.1
Using cached traitlets-5.0.5-py3-none-any.whl (100 kB)
Collecting jupyter-core>=4.6.1
Using cached jupyter_core-4.6.3-py2.py3-none-any.whl (83 kB)
Collecting Send2Trash
Using cached Send2Trash-1.5.0-py3-none-any.whl (12 kB)
Collecting nbformat
Using cached nbformat-5.0.8-py3-none-any.whl (172 kB)
Collecting chardet<4,>=3.0.2
Using cached chardet-3.0.4-py2.py3-none-any.whl (133 kB)
Collecting certifi>=2017.4.17
Using cached certifi-2020.6.20-py2.py3-none-any.whl (156 kB)
Collecting idna<3,>=2.5
Using cached idna-2.10-py2.py3-none-any.whl (58 kB)
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1
Using cached urllib3-1.25.11-py2.py3-none-any.whl (127 kB)
Collecting six>=1.11.0
Using cached six-1.15.0-py2.py3-none-any.whl (10 kB)
Collecting attrs>=17.4.0
Using cached attrs-20.2.0-py2.py3-none-any.whl (48 kB)
Collecting pyrsistent>=0.14.0
Using cached pyrsistent-0.17.3.tar.gz (106 kB)
Requirement already satisfied: setuptools in c:\users\yasse\appdata\local\programs\python\python39\lib\site-packages (from jsonschema>=3.0.1->jupyterlab-server<2.0,>=1.1.5->jupyterlab) (50.3.2)
Collecting ipython>=5.0.0
Using cached ipython-7.18.1-py3-none-any.whl (786 kB)
Collecting pywinpty>=0.5; os_name == "nt"
Using cached pywinpty-0.5.7.tar.gz (49 kB)
Collecting python-dateutil>=2.1
Using cached python_dateutil-2.8.1-py2.py3-none-any.whl (227 kB)
Collecting cffi>=1.0.0
Using cached cffi-1.14.3-cp39-cp39-win_amd64.whl (179 kB)
Collecting mistune<2,>=0.8.1
Using cached mistune-0.8.4-py2.py3-none-any.whl (16 kB)
Collecting testpath
Using cached testpath-0.4.4-py2.py3-none-any.whl (163 kB)
Collecting defusedxml
Using cached defusedxml-0.6.0-py2.py3-none-any.whl (23 kB)
Collecting nbclient<0.6.0,>=0.5.0
Using cached nbclient-0.5.1-py3-none-any.whl (65 kB)
Collecting jupyterlab-pygments
Using cached jupyterlab_pygments-0.1.2-py2.py3-none-any.whl (4.6 kB)
Collecting bleach
Using cached bleach-3.2.1-py2.py3-none-any.whl (145 kB)
Collecting pandocfilters>=1.4.1
Using cached pandocfilters-1.4.3.tar.gz (16 kB)
Collecting entrypoints>=0.2.2
Using cached entrypoints-0.3-py2.py3-none-any.whl (11 kB)
Collecting pygments>=2.4.1
Using cached Pygments-2.7.2-py3-none-any.whl (948 kB)
Collecting pywin32>=1.0; sys_platform == "win32"
Using cached pywin32-228-cp39-cp39-win_amd64.whl (9.1 MB)
Collecting colorama; sys_platform == "win32"
Using cached colorama-0.4.4-py2.py3-none-any.whl (16 kB)
Collecting decorator
Using cached decorator-4.4.2-py2.py3-none-any.whl (9.2 kB)
Collecting pickleshare
Using cached pickleshare-0.7.5-py2.py3-none-any.whl (6.9 kB)
Collecting prompt-toolkit!=3.0.0,!=3.0.1,<3.1.0,>=2.0.0
Using cached prompt_toolkit-3.0.8-py3-none-any.whl (355 kB)
Collecting backcall
Using cached backcall-0.2.0-py2.py3-none-any.whl (11 kB)
Collecting jedi>=0.10
Using cached jedi-0.17.2-py2.py3-none-any.whl (1.4 MB)
Collecting pycparser
Using cached pycparser-2.20-py2.py3-none-any.whl (112 kB)
Collecting nest-asyncio
Using cached nest_asyncio-1.4.2-py3-none-any.whl (5.3 kB)
Collecting async-generator
Using cached async_generator-1.10-py3-none-any.whl (18 kB)
Collecting webencodings
Using cached webencodings-0.5.1-py2.py3-none-any.whl (11 kB)
Collecting packaging
Using cached packaging-20.4-py2.py3-none-any.whl (37 kB)
Collecting wcwidth
Using cached wcwidth-0.2.5-py2.py3-none-any.whl (30 kB)
Collecting parso<0.8.0,>=0.7.0
Using cached parso-0.7.1-py2.py3-none-any.whl (109 kB)
Collecting pyparsing>=2.0.2
Using cached pyparsing-2.4.7-py2.py3-none-any.whl (67 kB)
Using legacy 'setup.py install' for tornado, since package 'wheel' is not installed.
Using legacy 'setup.py install' for MarkupSafe, since package 'wheel' is not installed.
Using legacy 'setup.py install' for pyrsistent, since package 'wheel' is not installed.
Using legacy 'setup.py install' for pywinpty, since package 'wheel' is not installed.
Using legacy 'setup.py install' for pandocfilters, since package 'wheel' is not installed.
Building wheels for collected packages: argon2-cffi
Building wheel for argon2-cffi (PEP 517) ... error
ERROR: Command errored out with exit status 1:
command: 'c:\users\yasse\appdata\local\programs\python\python39\python.exe' 'c:\users\yasse\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\yasse\AppData\Local\Temp\tmpal71y1ke'
cwd: C:\Users\yasse\AppData\Local\Temp\pip-install-bubdgxpe\argon2-cffi
Complete output (17 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
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: 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
在检查了一些论坛后，我发现错误是来自Build工具，但我安装了它，但我不知道为什么它不起作用！
答案 0 :(得分：0)
您是否尝试过安装wheel模块？
pip3 install wheel