只要在你的新环境中运行conda install ipykernel，只有这样你才能得到一个带有这个env的内核。即使你在每个envs中安装了不同的版本，它也不会再次安装jupyter笔记本。你可以从任何环境开始你的笔记本，你将能够看到新添加的内核。

这适用于我在windows 10和最新解决方案:

1)进入conda环境(激活your_env_name)

2) conda install -n your_env_name ipykernel

3) python -m ipykernel install——user——name build_central——display name" your_env_name"

(注意:在步骤3中，“your_env_name”周围包含引号)

nb_conda_kernels包是在conda中使用jupyter的最佳方式。通过最小的依赖关系和配置，它允许您使用运行在不同环境中的jupyter笔记本上的其他conda环境。引用其文件:

Installation This package is designed to be managed solely using conda. It should be installed in the environment from which you run Jupyter Notebook or JupyterLab. This might be your base conda environment, but it need not be. For instance, if the environment notebook_env contains the notebook package, then you would run conda install -n notebook_env nb_conda_kernels Any other environments you wish to access in your notebooks must have an appropriate kernel package installed. For instance, to access a Python environment, it must have the ipykernel package; e.g. conda install -n python_env ipykernel To utilize an R environment, it must have the r-irkernel package; e.g. conda install -n r_env r-irkernel For other languages, their corresponding kernels must be installed.

然后你需要做的就是启动jupyter笔记本服务器:

conda activate notebook_env  # only needed if you are not using the base environment for the server
# conda install jupyter # in case you have not installed it already
jupyter

尽管有太多的答案，@merv也在努力改进，但仍然很难找到一个好的答案。我做了这个CW，所以请投票给它的顶部或改进它!

This has been so frustrating, My problem was that within a newly constructed conda python36 environment, jupyter refused to load “seaborn” - even though seaborn was installed within that environment. It seemed to be able to import plenty of other files from the same environment — for example numpy and pandas but just not seaborn. I tried many of the fixes suggested here and on other threads without success. Until I realised that Jupyter was not running kernel python from within that environment but running the system python as kernel. Even though a decent looking kernel and kernel.json were already present in the environment. It was only after reading this part of the ipython documentation: https://ipython.readthedocs.io/en/latest/install/kernel_install.html#kernels-for-different-environments and using these commands:

source activate other-env
python -m ipykernel install --user --name other-env --display-name "Python (other-env)"

我能让一切顺利进行。(我实际上没有使用-user变量)。

我还没有想到的一件事是如何将默认的python设置为“python (other-env)”。目前，从主屏幕打开的现有.ipynb文件将使用系统python。我必须使用内核菜单“更改内核”来选择环境python。

添加conda环境到Jupyter:

在Anaconda提示中:

执行conda activate <env name> 执行conda install -c anaconda ipykernel命令 执行python -m ipykernel install——user——name=<env name> **在conda 4.8.3 4.11.0上测试

恼人的是，在你的tensorflow环境中，你可以运行jupyter notebook，而无需在该环境中安装jupyter。你就跑

(tensorflow) $ conda install jupyter

tensorflow环境现在应该在Jupyter notebook中可见，在任何conda环境中启动，类似于Python [conda env:tensorflow]。