1. Getting Ready

A Voilà site can be used to visualise a Jupyter notebook, so, before continuing, you will need the following:

• A project
• Project storage
• A JupyterLab notebook
• (Optionally) A Conda environment

For tutorials on the above, see:

• My First Notebook
• My first Jupyter project

An example notebook might contain the following in a cell:

import ipywidgets as widgets

slider = widgets.FloatSlider(description='$x$')
text = widgets.FloatText(disabled=True, description='$x^2$')

def compute(*ignore):
    text.value = str(slider.value ** 2)

slider.observe(compute, 'value')

slider.value = 4

widgets.VBox([slider, text])

Note that this example requires the ipywidgets package to be installed in the Conda environment if that is being used to run the notebook.