Python Jupyter notebook: Python3 displays, however Python2 runs

Question

I am trying to set up my Ubuntu 16.04 server on GSE(Google Compute Engine). I run into a problem here.

You can see from the up right corner, it is Python 3 kernel already.

For now, I think my the problem occurs because I first followed the instruction from Using both Python 2.x and Python 3.x in IPython Notebook:

1. Create this directory: mkdir -p ~/.ipython/kernels/python3

2. Create this file ~/.ipython/kernels/python3/kernel.json with this

   content: { "display_name": "IPython (Python 3)", "language": "python", "argv": [ "python3", "-c", "from IPython.kernel.zmq.kernelapp import main; main()", "-f", "{connection_file}" ], "codemirror_mode": { "version": 2, "name": "ipython" } }

   And then I installed jupyter(for python3 I think) via pip3:

   $ sudo apt-get install ipython3 $ pip3 install jupyter

But How am I gonna fix this here?

Thank you!

Answer 1

I have figured this out. The only thing you need to do is to restart the instance. I have no idea why it's. But it somehow fixs my problem here.