Hello everybody 
@jmmease & @nicolaskruchten from our team just published a really great new tutorial that covers the figure property of dcc.Graph in great depth:
Creating and Updating Figures in Python - https://plot.ly/python/creating-and-updating-figures/
We’ve made a lot of changes to this property this year (Introducing Plotly Express and Announcing Plotly.py 4.0.0): we’ve introduced plotly.express as a new way to “generate” figures and we’ve added many .update_ methods that make it easy to modify the properties of an existing figure.
This new Plotly Python Graphing Library tutorial covers figure in all of its forms: from it’s underlying JSON form to its list & dictionary representation, from graph_objects to px.* to figure_factory.
I highly recommend giving it a read. We’d also love to hear your feedback.
Some screenshots from the tutorial
