Fastapi Tutorial Pdf Apr 2026

from fastapi import FastAPI from pydantic import BaseModel

# Define a Pydantic model for our data class Item(BaseModel): id: int name: str description: str fastapi tutorial pdf

Create a new file called main.py and add the following code: from fastapi import FastAPI from pydantic import BaseModel

app = FastAPI()

Let's create a few more endpoints to demonstrate FastAPI's capabilities. Update the main.py file with the following code: including support for asynchronous programming

uvicorn main:app --host 0.0.0.0 --port 8000 This will start the development server, and you can access your API at http://localhost:8000 .

In this tutorial, we've built a simple API using FastAPI to demonstrate its capabilities. FastAPI provides a lot of features out of the box, including support for asynchronous programming, automatic API documentation, and strong typing.