对于conda 4.5.12，适用于我的是(我的虚拟环境被称为nwt)

conda create --name nwt python=3

之后，我需要激活虚拟环境并安装ipykernel

activate nwt
pip install ipykernel

那么对我有效的方法是:

python -m ipykernel install --user --name env_name --display-name "name of your choosing."

例如，我使用'nwt'作为虚拟env的显示名称。在运行上面的命令之后。再次在Anaconda Prompt中运行“jupyter notebook”。我得到的是:

可能的特定渠道问题

我有这个问题(再次)，原来我从conda-forge频道安装;将其移除并从蟒蛇通道重新安装，而不是为我修复它。

更新:我在一个新的env中再次遇到了同样的问题，这次我确实从anaconda通道安装了nb_conda_kernels，但我的jupyter_client来自conda forge通道。卸载nb_conda_kernels并重新安装会将其更新到更高优先级的通道。

所以请确保你从正确的渠道安装:)

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。

虽然@coolscitist的回答对我来说是有效的，但也有一种方法不会让你的内核环境与完整的jupyter包+deps混淆。 它在ipython文档中有描述，(我怀疑)只有在非基础环境中运行笔记本服务器时才有必要。

conda activate name_of_your_kernel_env
conda install ipykernel
python -m ipykernel install --prefix=/home/your_username/.conda/envs/name_of_your_jupyter_server_env --name 'name_of_your_kernel_env'

你可以用

conda activate name_of_your_jupyter_server_env 
jupyter kernelspec list

仅使用环境变量:

python -m ipykernel install --user --name $(basename $VIRTUAL_ENV)

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