Jupyter Notebookで複数カーネル(Mac)

自分用メモ

仮想環境使ってkernelの追加方法

MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
プロセッサ　2.5GHz Intel Core i7
メモリ　　　8GB 2133 MHz LPDDR3

実環境でAnacondaが入っている前提で
https://www.anaconda.com/download/

#Jupyter Notebookで使えるカーネルの確認

$ jupyter kernelspec list
python2    /Users/(ユーザ名)/anaconda2/share/jupyter/kernels/python2

#python2系のkernelを追加するとき

$ conda create -n py27 python=2.7 notebook ipykernel
$ source activate py27
$ ipython kernel install --user

カーネルの情報は/Users/(ユーザ名)/Library/Jupyter/kernels/python2/kernel.jsonにある

$ cat /Users/(ユーザ名)/Library/Jupyter/kernels/python2/kernel.json
{
 "display_name": "Python 2",
 "language": "python",
 "argv": [
  "/Users/(ユーザ名)/anaconda2/envs/py27/bin/python",
  "-m",
  "ipykernel_launcher",
  "-f",
  "{connection_file}"
 ]

#python3系のkernelを追加するとき

$ conda create -n py36 python=3.6 notebook ipykernel
$ source activate py36
$ ipython kernel install --user

kernelの情報は上と同様

#Jupyter Notebookで使えるカーネルの再確認

$ jupyter kernelspec list
python2    /Users/(ユーザ名)/Library/Jupyter/kernels/python2
python3    /Users/(ユーザ名)/Library/Jupyter/kernels/python3

#Jupyter Notebookの起動

$ jupyter notebook

参考サイト
https://stackoverflow.com/questions/30492623/using-both-python-2-x-and-python-3-x-in-ipython-notebook