How To Get IPython Notebook To Run Python 3?

Question

I am new to Python to bear with me.

1. I installed Anaconda, works great.
2. I setup a Python 3 environment following the Anaconda cmd line instructions, works

Answer 1

In Anaconda "launcher.app" there is “Environment:” pull down menu. The default environment is called "root". In order to launch application using another environment, just select the desired environment from the list, to make it active.

Answer 2

If you have both version available on jupyter notebook, you can change the kernel from menu.

Answer 3

If you are running anaconda, then the preferred way to install notebook/jupyter is using conda:

conda install jupyter

Answer 4

Another solution would be to create a virtualenv with python3:

From this environment, install tensorflow (the version you prefer) there:

pip install tensorflow

Run your jupyter from there !

Answer 5

Is there a package from your distro? If you're using ubuntu you must to install the ipython3-notebook package. If not, maybe you must to install ipython with python3.

If you've run (because it's python2 by default)

python setup.py

you must to run instead

python3 setup.py install

to install a package with python3 instead python2. This will be a new instalation of ipython3.

Answer 6

Switch the role of 2 and 3 in this answer as appropriate.

Say you already have jupyter setup with a python 2 kernel and an anaconda environment with python 3. Activate the python 3 enviroment and then run

conda install ipykernel

After that you can select both a 2 and 3 kernel when creating a new notebook, or in a running notebook from the kernels menu.