click

Click is the Command Line Interface Creation Kit from the Pallets organization. It provides a Python toolkit for creating command-line applications with a composable structure and minimal boilerplate. Developers can define commands and options through decorators, add prompts and help text, and use Click's output helpers for terminal messages. The repository highlights three central capabilities: arbitrary nesting of commands, automatic help page generation, and lazy loading of subcommands at runtime. Click is designed to be highly configurable while providing sensible defaults, aiming to make CLI development quick and flexible enough to support intended command APIs. The included example defines a `hello` command with `--count` and `--name` options. When run, it can prompt for a name and print the configured number of greeting messages. The README also links to Pallets donation and contribution documentation.