从 Anaconda 启动 Jupyter Notebook 时出现问题

Question

我在启动 Jupyter Notebook 时遇到问题。我尝试了两种方法，但似乎出错了。

1 - 使用命令从 Anaconda 提示符启动 jupyter notebook 或直接从 Anaconda 菜单中选择

我得到以下信息：

(base) C:\Users\metni>jupyter notebook
Traceback (most recent call last):
  File "C:\Users\metni\anaconda3\lib\site-packages\jsonschema\__init__.py", line 31, in <module>
    from importlib import metadata
ImportError: cannot import name 'metadata' from 'importlib' (C:\Users\metni\anaconda3\lib\importlib\__init__.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\metni\anaconda3\lib\site-packages\nbformat\validator.py", line 12, in <module>
    from jsonschema import ValidationError
  File "C:\Users\metni\anaconda3\lib\site-packages\jsonschema\__init__.py", line 33, in <module>
    import importlib_metadata as metadata
ModuleNotFoundError: No module named 'importlib_metadata'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\metni\anaconda3\Scripts\jupyter-notebook-script.py", line 6, in <module>
    from notebook.notebookapp import main
  File "C:\Users\metni\anaconda3\lib\site-packages\notebook\notebookapp.py", line 80, in <module>
    from .services.contents.manager import ContentsManager
  File "C:\Users\metni\anaconda3\lib\site-packages\notebook\services\contents\manager.py", line 17, in <module>
    from nbformat import sign, validate as validate_nb, ValidationError
  File "C:\Users\metni\anaconda3\lib\site-packages\nbformat\__init__.py", line 32, in <module>
    from .validator import validate, ValidationError
  File "C:\Users\metni\anaconda3\lib\site-packages\nbformat\validator.py", line 23, in <module>
    raise ImportError(str(e) + verbose_msg)
ImportError: No module named 'importlib_metadata'

    Jupyter notebook format depends on the jsonschema package:

        https://pypi.python.org/pypi/jsonschema

    Please install it first.

2 - 从命令行使用相同的命令启动

我得到以下信息：

C:\Users\metni>jupyter notebook
Traceback (most recent call last):
  File "C:\Users\metni\anaconda3\Scripts\jupyter-notebook-script.py", line 6, in <module>
    from notebook.notebookapp import main
  File "C:\Users\metni\anaconda3\lib\site-packages\notebook\notebookapp.py", line 64, in <module>
    from tornado import httpserver
  File "C:\Users\metni\anaconda3\lib\site-packages\tornado\httpserver.py", line 29, in <module>
    import ssl
  File "C:\Users\metni\anaconda3\lib\ssl.py", line 98, in <module>
    import _ssl             # if we can't import it, let the error propagate
ImportError: DLL load failed: The specified module could not be found.

这似乎是指一个名为jsonschema 的包，它显然没有安装，但运行pip install jsonschema 并不能解决我的问题...

Answer 1

在上面的答案中，我也有两个两个命令，但它们有点不同

source /opt/anaconda/bin/activate root

然后

jupyter notebook

看来你必须进入你的anaconda目录然后bin，然后你可以 “激活根”

看起来您还需要安装一些其他依赖项才能运行 jupyter。在哪里说

Jupyter notebook format depends on the jsonschema package:

    https://pypi.python.org/pypi/jsonschema

Please install it first.

如果上述方法不起作用，请尝试安装其他依赖项并重试

Answer 2

基于来自类似问题的answer，我设法通过运行以下两个命令来解决问题：

conda update -n root conda

conda update --all

我因此更新了所有包，笔记本现在正在启动。