Traceback(最近一次调用):文件"/usr/local/bin/jupyter-notebook"，第5行，在从笔记本。Notebookapp导入主文件"/usr/local/lib/python3.8/dist-packages/notebook/notebookapp.py"，第79行，在从.services.contents。导入ContentsManager文件"/usr/local/lib/python3.8/dist-packages/notebook/services/contents/manager.py"从nbformat导入符号，验证为validate_nb, ValidationError文件"/usr/local/lib/python3.8/dist-packages/nbformat/sign.py"，第26行从traitlets导入(importterror:无法从'traitlets'中导入名称'Callable' (/usr/lib/python3/dist-packages/traitlets/init). py)
运行命令:
pip install jupyter
它对我有用。