python快速搭建web fastapi快速示例

原创

小毛coder

发布于 2024-03-29 13:59:13

1740

发布于 2024-03-29 13:59:13

准备

安装python以及virtualenv

项目创建

创建目录

E:\project>mkdir py-web

进入目录

E:\project>cd py-web

E:\project\py-web>

创建虚拟环境`.env`

E:\project\py-web>virtualenv .env
created virtual environment CPython3.10.11.final.0-64 in 3751ms
creator CPython3Windows(dest=E:\project\py-web\.env, clear=False, no_vcs_ignore=False, global=False)
seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=C:\Users\bom\AppData\Local\pypa\virtualenv)
added seed packages: pip==24.0, setuptools==69.1.1, wheel==0.42.0
activators BashActivator,BatchActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator

激活虚拟环境

E:\project\py-web>.\.env\Scripts\activate

(.env) E:\project\py-web>

安装fastapi

(.env) E:\project\py-web>pip install "fastapi[all]"==0.110.0
Looking in indexes: https://mirrors.aliyun.com/pypi/simple, https://pypi.tuna.tsinghua.edu.cn/simple
Collecting fastapi==0.110.0 (from fastapi[all]==0.110.0)
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/f0/f7/ea860cb8aa18e326f411e32ab537424690a53db20de6bad73d70da611fae/fastapi-0.110.0-py3-none-any.whl (92 kB)

示例代码

创建`main.py`,内容如下

from fastapi import FastAPI

app = FastAPI()


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

运行项目代码

(.env) E:\project\py-web>uvicorn main:app --host 0.0.0.0 --port 8080 --reload
[32mINFO[0m:     Will watch for changes in these directories: ['E:\\project\\py-web']
[32mINFO[0m:     Uvicorn running on [1mhttp://127.0.0.1:8000[0m (Press CTRL+C to quit)
[32mINFO[0m:     Started reloader process [[36m[1m14228[0m] using [36m[1mWatchFiles[0m
[32mINFO[0m:     Started server process [[36m24088[0m]
[32mINFO[0m:     Waiting for application startup.
[32mINFO[0m:     Application startup complete.