cli-fw

A compact dataclass-driven command-line framework extracted from the Pacman and RAG projects.

uv add cli-fw

Example

from dataclasses import dataclass
from cli_fw import Command, arg


@dataclass
class Serve:
    port: int = arg(help="Port to listen on", default=8000)


command = Command("serve", schema=Serve)
parsed = command.execute(["--port", "8080"])

It supports positional and optional arguments, choices, booleans, lists, nested commands, generated help, and typed parse errors.

Where I use it

This is my internal CLI framework for 42 projects. The latest implementation was extracted from coding/42/cc/pac-man, with behavior checked against coding/42/cc/rag-against-the-machine. Pacman uses it for the game command and RAG uses it to validate command syntax and produce diagnostics before command execution.

Dependencies

Python 3.10+
typed-errs for Result, Err, and diagnostics

Development and release

Run mise run check. Every push to master publishes a unique 0.0.<CI run> ZeroVer version through PyPI Trusted Publishing. mise run publish remains available.

Development Status
- 3 - Alpha
Environment
- Console
Programming Language
- Python :: 3 :: Only
Typing
- Typed

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