A core focus of the guide is the end-to-end process of creating custom plugins, from using the Plugin Builder to designing interfaces with Qt Designer.
Absolutely. In fact, it is non-negotiable for anyone serious about QGIS development. The 2.x era was messy, with fragmented tutorials and broken examples. QGIS 3 unified the API, made it Python-idiomatic, and the Programmer’s Guide is the canonical map to that new territory. pyqgis programmer 39-s guide 3 pdf
This chapter covers the core QGIS data model: A core focus of the guide is the
: Learn how to use the modern Python 3 API that powers current QGIS versions. made it Python-idiomatic