Install Both Python2 and Python3 in Jupyter

When we install jupyter by Conda, it offers python2 or python3 version. Such as me, I installed conda with python2. But in some cases, the codes are based on python3, so we need both python2 and python3 in one jupyter, and we can choose which version we need simply.

I search google for some results, refers to:

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

When the version of Anaconda above 4.1.0, it can easily install two python kernels.

Check Anaconda version

In my server, the version satisfies the requirements.

[~]# conda -V
conda 4.2.13

Install python kernel

Python2

conda create -n py36 python=2.7 ipykernel

Python3

conda create -n py36 python=3.6 ipykernel

Register kernels

Python 2

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

Python 3

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

Finish

We can see the notebook with both python2 and python3.