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Flask-Lan is a schema validator and swagger generator but more modernized

Project description


Flask-Lan is a schema validator and swagger generator but more modernized.

!!! Warning

Currently, `flask-lan` is still under active development(before verion 1.0.0). Don't use it in production.

It's kind of like the famous library FastAPI, bringing part of brilliant features of FastAPI to your Flask application. For example, it uses Pydantic for Request/Response params validation and auto-generates swagger docs.


  • Intuitive and easy to use.
  • Use type hinting to validate request/response params.
  • Auto-generate swagger docs.

Quick start

pip install flask-lan

A simple example:

from flask import Flask
from pydantic import BaseModel
from flask_lan import validator, docs

app = Flask(__name__)

@docs(tag="books", desc="Get books")
def home(id:int, q: str, star: float=10):
    return {"id":id, "q": q, "star": star}

if __name__ == "__main__":


This project is licensed under the terms of the MIT license.

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