Using %run magic command with Jupyter Notebook

When working with Jupyter Notebook, in many cases we want to share some code blocks between different notebooks to reduce code redundancy.

Good news is that in newer Jupyter, we can achieve this with the %run magic command, which allows us to run one jupyter notebook inside another.

For example, we have a jupyter notebook named utility.ipynb, which defines some utility functions to be used by a set of notebooks. Instead of copy and paste the code in each notebook, we can simply add the following code into the top of each notebook:

%run utility.ipynb

Running the above magic command give us to whatever is defined in utility.ipynb, including both variables and functions.

Official doc