The value of the top-level`"data"` key is a list of trace specifications. Each trace specification has a special`"type"` key that indicates the trace type that is being defined (e.g. a`"bar"`,`"scatter"`,`"contour"`, etc.). The rest of the keys in the trace specification are used to configure the properties of the trace of this type.

The value of the top-level`"layout"` key is a dictionary that specifies the properties of the figure's layout. In contrast to trace configuration options that apply to individual traces, the layout configuration options apply to the figure as a whole.

The value of the top-level`"layout"` key is a dictionary that specifies the properties of the figure's layout. In contrast to trace configuration options that apply to individual traces, the layout configuration options apply to the figure as a whole, customizing items like the axes, annotations, shapes, legend, and more.

The[*Full Reference*](https://plot.ly/python/reference/) page contains descriptions of all of the supported trace and layout options.