Fastapi | Tutorial Pdf

mkdir fastapi-tutorial cd fastapi-tutorial Create a new file called main.py and add the following code:

@app.get("/items/{item_id}") def read_item(item_id: int): return {"item_id": item_id} This code defines a new route for a GET request to /items/{item_id} that accepts an item_id path parameter.

@app.post(“/token”) def login(form_data: OAuth2PasswordRequestForm = Depends()): fastapi tutorial pdf

FastAPI also provides support for query parameters, which allow you to pass data in the URL query string. For example:

# Authenticate user return {"access_token": "token", "token_type": "bearer"} @app.get(“/items/”) def read_items(token: str = Depends(oauth2_scheme)): mkdir fastapi-tutorial cd fastapi-tutorial Create a new file

from fastapi import FastAPI, Request app = FastAPI() @app.post("/items/") def create_item(item: dict): return {"item_id": 1, "item_name": item["item_name"]} This code defines a new route for a POST request to /items/ that accepts a JSON payload with an item_name field.

FastAPI Tutorial: A Comprehensive Guide to Building Modern APIs** FastAPI Tutorial: A Comprehensive Guide to Building Modern

pip install fastapi Next, create a new directory for your project and navigate into it:

FastAPI provides support for path parameters, which allow you to pass data in the URL path. For example:

@app.get("/items/") def read_items(page: int = 1, limit: int = 10): return {"page": page, "limit": limit} This code defines a new route for a GET request to /items/ that accepts page and limit query parameters.

from pydantic import BaseModel class Item(BaseModel): item_name: str item_description: str @app.post("/items/") def create_item(item: Item): return item This code defines a new route for a POST request to /items/ that accepts a JSON payload with item_name and item_description fields.