我安裝了 python 3.9.1 但無法打開 jupyter notebook 或 jupyterlab

Question

我只是安裝甚至重新安裝，但是當我嘗試打開 jupuyterlab 或 p notebook 時，它會出現以下錯誤

 File "c:\users\v\appdata\local\programs\python\python39\lib\runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "c:\users\v\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "C:\Users\v\AppData\Local\Programs\Python\Python39\Scripts\jupyter-notebook.EXE\__main__.py", line 4, in <module>
  File "c:\users\v\appdata\local\programs\python\python39\lib\site-packages\notebook\notebookapp.py", line 49, in <module>
    from zmq.eventloop import ioloop
  File "c:\users\v\appdata\local\programs\python\python39\lib\site-packages\zmq\__init__.py", line 50, in <module>
    _load_libzmq()
  File "c:\users\v\appdata\local\programs\python\python39\lib\site-packages\zmq\__init__.py", line 28, in _load_libzmq
    from . import libzmq
ImportError: DLL load failed while importing libzmq: The specified module could not be found.

Answer 1

我有同樣的問題。 我能夠通過卸載 pyzmq 並使用舊版本重新安裝它來解決它

pip uninstall pyzmq

pip install pyzmq==20.0.0