Explanation#

The explanation section aims to clarify, deepen, and broaden the understanding of Panel with discussions about topics at a high-level or from alternate angles. This may include reasoning about design decisions, historical development, and technical constraints.

Beyond the Getting Started > Core Concepts, which new users must complete before working with Panel, this explanation section is intended to help practitioners form and strengthen a conceptual web that facilitates new and advanced usage directions.

Developing in Panel#

Develop Seamlessly

Learn how we enable you and your team to work seamlessly with Panel across a wide range of development environments

APIs#

In this section we will discuss the principles and design decisions behind Panel’s APIs in order to guide you towards the best approach for structuring your applications. We begin with a set of explanations behind the use of Param in Panel, how it unlocks reactive approaches to write applications and contrast function and class based approaches for writing apps.

Parameters in Panel

Background on the use of Param in Panel.

Reactivity in Panel

A deep dive into the reactive and callback based APIs in Panel.

Functions vs Classes

A discussion that contrasts function and class based APIs in Panel.

Next let us contrast the different APIs offered by Panel by applying them to a particular problem.

1. Reactive API

Linking functions or methods to widgets using pn.bind or the equivalent pn.depends decorator.

2. Declarative API

Declare Parameters and their ranges in Parameterized classes, then get GUIs (and value checking!) for free.

3. Callbacks API