python篇FastAPI_快速使用手册

一个新兴的web框架，有两个基本组件构成：

1. startlette 一个轻量级的ASGI框架/工具包。（ASGI Asynchronous Server Gateway Interface，异步服务器网关接口)
2. pydantic -》处理数据 ：定义类后，可以用于数据的验证 （见官网首页 https://docs.pydantic.dev/latest/） 等等

安装fastapi

pip install fastapi

asgi 服务器安装

pip install "uvicorn[standard]"

helloworld

from fastapi import FastAPI
app=FastAPI()
@app.get("/")
async def root():
    return {"message" : "hello world"}

启动服务（开发模式）

(base) candice@cds992 ~ % pwd
/Users/candice
(base) candice@cds992 ~ % ls hello_fastapi.py
hello_fastapi.py
(base) candice@cds992 ~ % **uvicorn hello_fastapi:app --reload**
INFO:     Will watch for changes in these directories: ['/Users/candice']
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [2990] using WatchFiles
INFO:     Started server process [2992]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

(base) candice@cds992 ~ % curl 127.0.0.1:8000
{"message":"hello world"}

交互式文档可查看 localhost:8000/docs
API文档可查看localhost:8000/redoc