anaconda 中启动jupyter notebook找不到python2 kernerl

本文主要是介绍anaconda 中启动jupyter notebook找不到python2 kernerl，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

问题

• 在jupyter notebook中将kernel从python3切换到python2时，出现Could not find a kernel matching Python 2. Please select a kernel的错误

解决方法

• 查看已有的ipykernel环境
  jupyter kernelspec list
  如下图所示，表明python3的ipython内核已安装

Available kernels:python3    /home/ozh/.local/share/jupyter/kernels/python3

• 安装python2环境
  conda create --name pythonn27 python=2.7
• 切换python环境
  source activate python27
• 安装ipython内核
  conda install ipykernel
• 配置内核
  python -m ipykernel install --user
• 查看内核文件指向python版本
  位置：~/.local/share/jupyter/kernels/python2/kernel.json

{"display_name": "Python 2","language": "python","argv": ["/home/ozh/anaconda3/envs/python27/bin/python","-m","ipykernel_launcher","-f","{connection_file}"]
}

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