Jupyter笔记本运行错误：AttributeError: module 'importlib_metadata' has no attribute 'version'

最初，Jupyter笔记本运行良好，没有任何问题。 但是今天安装了tensorflow和keras之后就不行了。

错误信息：

Traceback (most recent call last):
  File "C:\Anaconda3\Scripts\jupyter-notebook-script.py", line 6, in <module>
    from notebook.notebookapp import main
  File "C:\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 85, in <module>
    from .services.contents.manager import ContentsManager
  File "C:\Anaconda3\lib\site-packages\notebook\services\contents\manager.py", line 17, in <module>
    from nbformat import sign, validate as validate_nb, ValidationError
  File "C:\Anaconda3\lib\site-packages\nbformat\__init__.py", line 32, in <module>
    from .validator import validate, ValidationError
  File "C:\Anaconda3\lib\site-packages\nbformat\validator.py", line 12, in <module>
    from .json_compat import get_current_validator, ValidationError
  File "C:\Anaconda3\lib\site-packages\nbformat\json_compat.py", line 10, in <module>
    import jsonschema
  File "C:\Anaconda3\lib\site-packages\jsonschema\__init__.py", line 34, in <module>
    __version__ = metadata.version("jsonschema")
AttributeError: module 'importlib_metadata' has no attribute 'version'

你的有问题importlib_metadata包，您可以尝试先卸载它，然后使用以下命令强制进行新安装：

pip uninstall importlib_metadata 
pip install importlib_metadata --force-reinstall

这对我有用。