FastAPI快速入门1 Hello World - ToB企服应用市场:ToB评测及商务社交产业平台

from fastapi import FastAPI, APIRouter
# 1
app = FastAPI(
title="Recipe API", openapi_url="/openapi.json"
)
# 2
api_router = APIRouter()
# 3
@api_router.get("/", status_code=200)
def root() -> dict:
"""
Root Get
"""
return {"msg": "Hello, World!"}
# 4
app.include_router(api_router)
# 5
if __name__ == "__main__":
# Use this for debugging purposes only
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=8001, log_level="debug")

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$ python main.py
INFO: Started server process [19369]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://0.0.0.0:8001 (Press CTRL+C to quit)

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from fastapi import FastAPI, APIRouter
RECIPES = [
{
"id": 1,
"label": "Chicken Vesuvio",
"source": "Serious Eats",
"url": "http://www.seriouseats.com/recipes/2011/12/chicken-vesuvio-recipe.html",
},
{
"id": 2,
"label": "Chicken Paprikash",
"source": "No Recipes",
"url": "http://norecipes.com/recipe/chicken-paprikash/",
},
{
"id": 3,
"label": "Cauliflower and Tofu Curry Recipe",
"source": "Serious Eats",
"url": "http://www.seriouseats.com/recipes/2011/02/cauliflower-and-tofu-curry-recipe.html",
},
]
app = FastAPI(title="Recipe API", openapi_url="/openapi.json")
api_router = APIRouter()
@api_router.get("/", status_code=200)
def root() -> dict:
"""
Root GET
"""
return {"msg": "Hello, World!"}
# New addition, path parameter
# https://fastapi.tiangolo.com/tutorial/path-params/
@api_router.get("/recipe/{recipe_id}", status_code=200)
def fetch_recipe(*, recipe_id: int) -> dict:
"""
Fetch a single recipe by ID
"""
result = [recipe for recipe in RECIPES if recipe["id"] == recipe_id]
if result:
return result[0]
app.include_router(api_router)
if __name__ == "__main__":
# Use this for debugging purposes only
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=8001, log_level="debug")

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from fastapi import FastAPI, APIRouter
from typing import Optional
RECIPES = [
{
"id": 1,
"label": "Chicken Vesuvio",
"source": "Serious Eats",
"url": "http://www.seriouseats.com/recipes/2011/12/chicken-vesuvio-recipe.html",
},
{
"id": 2,
"label": "Chicken Paprikash",
"source": "No Recipes",
"url": "http://norecipes.com/recipe/chicken-paprikash/",
},
{
"id": 3,
"label": "Cauliflower and Tofu Curry Recipe",
"source": "Serious Eats",
"url": "http://www.seriouseats.com/recipes/2011/02/cauliflower-and-tofu-curry-recipe.html",
},
]
app = FastAPI(title="Recipe API", openapi_url="/openapi.json")
api_router = APIRouter()
@api_router.get("/", status_code=200)
def root() -> dict:
"""
Root GET
"""
return {"msg": "Hello, World!"}
@api_router.get("/recipe/{recipe_id}", status_code=200)
def fetch_recipe(*, recipe_id: int) -> dict:
"""
Fetch a single recipe by ID
"""
result = [recipe for recipe in RECIPES if recipe["id"] == recipe_id]
if result:
return result[0]
# New addition, query parameter
# https://fastapi.tiangolo.com/tutorial/query-params/
@api_router.get("/search/", status_code=200)
def search_recipes(
keyword: Optional[str] = None, max_results: Optional[int] = 10
) -> dict:
"""
Search for recipes based on label keyword
"""
if not keyword:
# we use Python list slicing to limit results
# based on the max_results query parameter
return {"results": RECIPES[:max_results]}
results = filter(lambda recipe: keyword.lower() in recipe["label"].lower(), RECIPES)
return {"results": list(results)[:max_results]}
app.include_router(api_router)
if __name__ == "__main__":
# Use this for debugging purposes only
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=8001, log_level="debug")

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