typer-patterns

Provides modern type-safe Typer CLI patterns including type hints, Enum usage, sub-app composition, and Typer() instance patterns for building maintainable command-line applications.

Core Patterns

1. Type-Safe Commands with Type Hints

Use Python type hints for automatic validation and better IDE support:

import typer
from typing import Optional
from pathlib import Path

app = typer.Typer()