Python Flask入门

环境是Windows 64位系统，Python3.需要安装的包是Flask。

 

1. 首先写以下代码，命名为test.py：

# -*- coding: utf-8 -*-
# @Time    : 2020/7/29 19:42
# @Author  : QUENTINNE
# @File    : test.py
# @Software: PyCharm

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

2.进入代码所在的文件夹，在终端输入以下两行命令：

set FLASK_APP=test.py
python -m flask run

#例如：
(64) C:\Users\hanxi\PycharmProjects\Code\venv>set FLASK_APP=test.py

(64) C:\Users\hanxi\PycharmProjects\Code\venv>python -m flask run

3. 进入http://127.0.0.1:5000/，在浏览器显示Hello, World!。成功！！

* Serving Flask app "test.py"
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

 

参考资料：https://dormousehole.readthedocs.io/en/latest/quickstart.html