asyncdefsearch_jobs(kd: str, city: Union[str, None] = None, xl: Union[str, None] = None):#有默认值即可选,否则必选ifcityorxl:return{"kd": kd,"city": city,"xl": xl}return{"kd": kd} 在这个例子中,函数参数city和xl是可选的,并且默认值为None。 View Code 自python3.5开始,PEP484为...
async def fetch_data(): data = await some_async_api_call() return process_data(data) await await 关键字用于在异步函数内部暂停当前协程的执行,直到紧跟其后的表达式(通常是一个异步操作的结果)变为可用。这通常涉及到 I/O 密集型操作,如网络请求、数据库查询、文件读写等,这些操作在等待期间不会阻塞...
async def add_process_time_header(request: Request, call_next): start_time = time.time() response = await call_next(request) process_time = time.time() - start_time print(f"request processed in {process_time} s") return response @app.middleware("http")装饰器是在 FastAPI 中创建中间件...
接口调用像下面这样：@app.get('uu')asyncdefty():tasks=[]body={'id':1}foriinrange(10):task...
from fastapi import FastAPI app = FastAPI() @app.get("/") async def read_root(): return {"Hello": "World"} @app.get("/items/{item_id}") async def read_item(item_id: int, q: str = None): return {"item_id": item_id, "q": q} 2.运行 通过以下命令运行服务器: uvicorn mai...
You can only useawaitinside of functions created withasync def. If you are using a third party library that communicates with something (a database, an API, the file system, etc.) and doesn't have support for usingawait, (this is currently the case for most database libraries), then de...
app = FastAPI()@app.get("/")asyncdefroot(): tasks = []asyncdefperform_task(task_id):# 这里可以编写你的并发请求逻辑awaitasyncio.sleep(1)returnf"Task{task_id}completed."foriinrange(5): task = asyncio.create_task(perform_task(i)) ...
app=FastAPI()@app.middleware("http")asyncdefadd_process_time_header(request:Request,call_next):start_time=time.time()response=awaitcall_next(request)process_time=time.time()-start_time response.headers["X-Process-Time"]=str(process_time)response.headers['leizishuocceshikaifa']="leizishuoceshi...
from fastapi import FastAPI from fastapi_mcp import add_mcp_server import httpx app = FastAPI() @app.get("/weather/{city}") async def get_weather(city: str): """获取指定城市的天气信息""" async with httpx.AsyncClient() as client: response = await client.get(f"https://api.weatherapi...
FastApi 一个用于构建API的现代化,快速(高性能)的web框架. FastAPI是建立在Pydantic和Starlette基础上的,Pydantic是一个基于Python类型提示来定义数据验证,序列化和文档的库,Starlette是一种轻量级的ASGI框架/工具包,是构建高性能Asyncio服务的理性选择 两个核心组件 Starlette 负责web部分(Asyncio),官网地址为: Starlette...