What are some examples of using FastAPI?

What are some examples of using FastAPI?

FastAPI is a modern web framework for building APIs with Python. Here are a few examples of its usage:

1. Creating a simple RESTful API.
2. Building a CRUD application.
3. Integrating with databases like SQLAlchemy.
4. Implementing OAuth2 for authentication.

Can you show me a simple RESTful API example?

Sure! Here's a basic example:

from fastapi import FastAPI

app = FastAPI()

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}

This creates an endpoint that retrieves an item by its ID.

How do I connect FastAPI to a database?

You can use SQLAlchemy to connect FastAPI to a database. First, install SQLAlchemy and a database driver, then define your models and create a session to interact with the database.

What about authentication in FastAPI?

FastAPI supports OAuth2 for authentication. You can use the fastapi.security module to implement OAuth2 with password flow or other methods.