main.py

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"message": "Hello, FastAPI!"}


# Greet user by name
@app.get("/greet/{name}")
def greet_user(name: str):
    return {"greeting": f"Hello, {name}!"}


# Add two numbers
@app.get("/add")
def add_numbers(a: int, b: int):
    return {"result": a + b}

requirements.txt

fastapi
uvicorn