Rich is a Python terminal formatting library and user interface framework. It provides tools for rendering rich text, colors, and complex layouts within a terminal environment, including specialized formatters for markdown and source code syntax highlighting.
The library distinguishes itself through high-level UI components such as tables with unicode borders, hierarchical tree views for nested data structures, and a system for building structured terminal user interfaces. It also includes a debugging visualizer for pretty-printing complex data and formatting error tracebacks.
The capability surface covers data visualization via progress bars and activity spinners, as well as observability tools for object inspection and terminal log formatting. Layout management is handled through columnar content arrangement and emoji support.