将我的jupyter笔记本设置为使用python版本的enviromen

Question

我从一个anaconda环境打开了一个jupyter笔记本，但是内核使用的是默认版本的python，而不是在这个环境中定义的python（它包含我安装的所有包）。在

我怎样才能改变它？在

(myEnv) okoub@my-mac:~/Desktop$jupyter notebook
[I 13:35:46.644 NotebookApp] The port 8888 is already in use, trying another port.
[I 13:35:46.646 NotebookApp] The port 8889 is already in use, trying another port.
[I 13:35:46.675 NotebookApp] JupyterLab alpha preview extension loaded from /Users/okoub/anaconda3/lib/python3.6/site-packages/jupyterlab

我用的是MAC。在

在环境中安装jupyter后：

^{pr2}$

我得到了一个错误：

File "/Users/okoub/anaconda3/envs/myEnv/lib/python3.5/site-packages/prompt_toolkit/completion/base.py", line 4, in <module>
    from prompt_toolkit.eventloop import generator_to_async_generator, AsyncGeneratorItem
ImportError: cannot import name 'generator_to_async_generator'
[W 14:54:56.587 NotebookApp] KernelRestarter: restart failed
[W 14:54:56.587 NotebookApp] Kernel dcc36e3e-9352-402f-a513-ca1dca30e460 died, removing from map.
[W 14:55:41.612 NotebookApp] Timeout waiting for kernel_info reply from dcc36e3e-9352-402f-a513-ca1dca30e460
[E 14:55:41.616 NotebookApp] Error opening stream: HTTP 404: Not Found (Kernel does not exist: dcc36e3e-9352-402f-a513-ca1dca30e460)
[I 14:56:41.524 NotebookApp] Saving file at /my_notebook.ipynb

Answer 1

运行conda install nb_conda_kernels，然后重新启动jupyter。现在，在右上角应该有一个额外的选项来选择笔记本应该使用哪个conda env来执行代码。这是IMO最方便的解决方案，因为您可以在同一个项目中拥有多个笔记本电脑，它们可以在各自的环境下运行，而不必一直source activate。在

阅读更多信息：https://github.com/Anaconda-Platform/nb_conda_kernels