pytypeinput 0.1.5

Type hints → UI metadata. Build forms from Python function signatures.

pytypeinput 0.1.5

Extract structured metadata from Python type hints.

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pytypeinput analyzes Python type hints and extracts structured metadata. Use this metadata to build UIs, CLIs, config editors, or anything that needs input specifications.

from dataclasses import dataclass
from pytypeinput import Field, Annotated, analyze_dataclass

@dataclass
class User:
    username: Annotated[str, Field(min_length=3, max_length=20)]
    age: Annotated[int, Field(ge=18, le=120)]
    bio: str | None = None

# Extract metadata
params = analyze_dataclass(User)
# Use it to build: HTML forms, CLIs, GUIs, validators...

Design Goals

• Single source of truth - Define once with type hints, use everywhere (forms, CLIs, validation)
• Minimal code - Maximum features with minimum boilerplate
• Type-safe - Full IDE autocomplete and type checking
• Pure Python - Build UIs with Python code, not templates or DSLs

Installation

Core only:

pip install pytypeinput

With HTML renderer:

pip install pytypeinput[html]

Requirements: Python 3.10+ • Pydantic 2.0+

Documentation

Complete Documentation with interactive examples

Type System:

• Basic Types: int, float, str, bool, date, time
• Special Types: Email, Color, File, ImageFile, etc.
• Lists: list[Type] with item and list-level validation
• Optionals: Type | None with toggle switches
• Choices: Literal, Enum, Dropdown(func)
• Constraints: Field(min=, max=, pattern=) for validation
• Type Composition: Build complex types from simple ones
• UI Metadata: Custom labels, descriptions, placeholders, sliders, etc.

Renderers:

• HTML Renderer - Generate forms with client-side validation

Reference:

• API Reference - Complete API documentation

What pytypeinput does

✅ Extracts metadata from type hints
✅ Works with functions, dataclasses, Pydantic models, classes
✅ Optional HTML renderer with client-side validation
✅ Framework-agnostic

❌ No server-side validation
❌ No form submission handling

pytypeinput is a building block, not a complete solution.

Validation: Type hints validated when extracting metadata. HTML forms validate client-side. Server-side is your responsibility (use Pydantic with same type hints).

Contributing

Found a bug or have a suggestion? Open an issue

License

MIT • Beltrán Offerrall