fastapi — Easy Examples

Modern async API framework with automatic OpenAPI docs and Pydantic validation

EasyIntermediateAdvancedExpert

Getting started with fastapi

Installation and basic usage of fastapi.

python
# Install: pip install fastapi[standard]
from fastapi import FastAPI

app = FastAPI()

@app.get("/")
async def root():
    return {"message": "Hello, World!"}

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}
Expected Output
# Expected output shown below
# (Run locally with: fastapi)

fastapi is a third-party package. Modern async API framework with automatic OpenAPI docs and Pydantic validation. Install with: pip install fastapi[standard]

Common fastapi operations

Frequently used features of fastapi.

python
# Install: pip install fastapi[standard]
import fastapi

# Common fastapi patterns
print(f"fastapi version: {fastapi.__version__}")

These are the most commonly used features of fastapi in everyday development.

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