SCRIPTING | Python and VEX
Houdini supports powerful scripting languages, such as Python and VEX, to give artists and technical directors the control they need to build smarter tools and streamline production. Together, they make Houdini a flexible, customizable platform that fits seamlessly into any studio pipeline.
VEX
VEX (Vector Expression) is Houdini’s high-performance scripting language designed for handling large amounts of geometry, particles, volumes, and other data at scale. It is used primarily inside nodes, such as wrangles and shaders, to control attributes, create procedural effects, and define behaviors with speed and efficiency.
Unlike Python, which is geared toward pipeline integration and tool-building, VEX is highly optimized for parallel computation, making it ideal for tasks like procedural modeling, shading, simulation control, and custom effects. Its C-like syntax allows artists and technical directors to write compact, efficient code that executes directly on Houdini’s multithreaded architecture, enabling fine-grained control and complex procedural workflows.
Python
Python plays a central role in extending and customizing Houdini 3D software, serving as the primary scripting language for automating tasks, building tools, and integrating workflows. Artists and technical directors use Python to create custom nodes, user interfaces, and digital assets, as well as to streamline repetitive processes such as rendering, simulation setup, or pipeline integration.
It allows Houdini to connect seamlessly with external software, asset management systems, and render farms, making it an essential bridge between creative work and production infrastructure. In essence, Python empowers users to tailor Houdini to their specific needs, greatly enhancing efficiency and flexibility in complex 3D workflows.
Scripting Nodes
Here some of the nodes to look out for when working with scripting in Houdini. These nodes let you add and animate characters and props. The Scene Animate node is where the animation interface becomes available to artists.
LEARNING RESOURCES
Check out a growing collection of lessons focused on scripting in Houdini.
Scripting Learning PathSCRIPTING FEATURES AVAILABLE IN:
Houdini CORE | Houdini FX | Houdini Indie | Houdini Education | Houdini Apprentice