Jupyter-With-Virtualenv

添加内核

终端切换python版本很容易，但在jupyter中应该如何切换环境？

假如有一个虚拟环境science，将其导入jupyter的过程如下：

1、进入虚拟环境science

pyenv active science

2、安装ipykernel

pip install ipykernel

3、为jupyter安装新内核

ipython kernel install --user --name science --display-name "python3 (science)"

4、查看可用内核

jupyter-kernelspec list

Available kernerls:
  science    /Users/xuwutao/Library/Jupyter/kernels/science
  python3 /Users/xuwutao/.pyenv/versions/3.7.1/Python.framework/Versions/3.7/share/jupyter/kernels/python3

修改内核

内核在jupyter中以json文件方式存在。每新建一个内核，jupyter会在系统的特定位置新建文件夹，存储相应的json文件。这些位置分布如下：

	Unix	Windows
System	/usr/share/jupyter/kernels /usr/local/share/jupyter/kernels	%PROGRAMDATA\jupyter\kernels
Env	{sys.prefix}/share/jupyter/kernels
User	~/Library/Jupyter/kernels (Mac) ~/.local/share/jupyter/kernels (Linux)	%APPDATA%\jupyter\kernels