Sourcing a virtual environment inside a Jupyter Notebook

jupyter_in_virtualenv.md

Running Jupyter Notebook inside the virtual environment

You want to activate a virtual environment when running a Jupyter notebook using Python. In a terminal create a virtual environment, e.g., virtualenv --python=python3.6 .venv, then source that environment. Besides installing any required package and Jupyter (pip install --upgrade jupter) you need to install ipykernel, the IPython backend:

pip install ipykernel
python -m ipykernel install --user --name=.venv

Next launch Jupyter. In the upper right corner go to Kernel -> Change Kernel. You should see .venv in the drop down. Select it, restart the kernel, et voila...