Jupyter notebook 無法啟動，ModuleNotFoundError

Question

我正在尝试从我的终端启动jupyter notebook，就像我以前做过的百万次一样。突然，出现以下模块错误，我找不到解决方案。

(base) me518@PHS024636 ~ % conda activate mageckenv
(mageckenv) me518@PHS024636 ~ % jupyter notebook
Traceback (most recent call last):
File "/Users/me518/miniconda3/envs/mageckenv/bin/jupyter-notebook", line 5, in <module>
from notebook.notebookapp import main
File "/Users/me518/miniconda3/envs/mageckenv/lib/python3.7/site-packages/notebook/notebookapp.py", line 59, in <module>
from tornado import httpserver
File "/Users/me518/miniconda3/envs/mageckenv/lib/python3.7/site-packages/tornado/httpserver.py", line 32, in <module>
from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
File "/Users/me518/miniconda3/envs/mageckenv/lib/python3.7/site-packages/tornado/http1connection.py", line 34, in <module>
from tornado import iostream
File "/Users/me518/miniconda3/envs/mageckenv/lib/python3.7/site-packages/tornado/iostream.py", line 40, in <module>
from tornado.netutil import ssl_wrap_socket, _client_ssl_defaults, _server_ssl_defaults
ModuleNotFoundError: No module named 'tornado.netutil'

你知道是怎么回事吗?

我试着激活我所有的环境，没有工作。

Answer 1

看起来你已经尝试过pip install tornado(因为你也发布了这个)。也许可以在conda activate mageckenv之后执行以下操作:

python -m pip install tornado

，看看这是否解决了你的问题。

有时pip可能使用不同的环境，python -m pip确保它使用您想要的特定pip。