How to add or delete the kernel in ubuntu 20.04 jupyter under conda environment

1. Create environment

conda create -n env_name # 创建env_name环境
conda create -n env_name package_name # 创建包含package_name软件包的env_name环境

2. List environment

conda env list # 列举当前所有环境
conda info --envs # 列举当前所有环境

3. Add kernel

conda install nb_conda_kernels # 安装nb_conda_kernels
conda install ipykernel # 安装ipykernel
# 将环境写入jupyter notebook的kernel中
python -m ipykernel install --user --name env_name --display-name "你想为kernel添加的名称"

4. Delete the kernel

jupyter kernelspec remove env_name # 如果给env_name起了别名，将env_name替换成别名

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