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import panel as pn

The WidgetBox layout allows arranging multiple panel objects in a vertical container. It is largely identical to the Column layout but has some default styling that makes widgets be clearly grouped together visually. It has a list-like API with methods to append, extend, clear, insert, pop, remove and __setitem__, which make it possible to interactively update and modify the layout.


For details on other options for customizing the component see the layout and styling how-to guides.

  • objects (list): The list of objects to display in the WidgetBox. Should not generally be modified directly except when replaced in its entirety.

  • disabled (boolean, default=False): Allow to disable all the widgets displayed in the WidgetBox.

A WidgetBox layout can either be instantiated as empty and populated after the fact or using a list of objects provided as positional arguments. If the objects are not already panel components they will each be converted to one using the pn.panel conversion method.

w1 = pn.widgets.TextInput(name='Text:')
w2 = pn.widgets.FloatSlider(name='Slider')

box = pn.WidgetBox('# WidgetBox', w1, w2)

In general it is preferred to modify layouts only through the provided methods and avoid modifying the objects parameter directly. The one exception is when replacing the list of objects entirely, otherwise it is recommended to use the methods on the WidgetBox itself to ensure that the rendered views of the WidgetBox are rerendered in response to the change. As a simple example we might add an additional widget to the box using the append method:

w3 = pn.widgets.Select(options=['A', 'B', 'C'])

On a live server or in a notebook the box above will dynamically expand in size to accommodate all three widgets and the title. To see the effect in a statically rendered page, we will display the box a second time:


In general a WidgetBox does not have to be given a width, height or sizing_mode, allowing it to adapt to the size of its contents.

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