Flask框架（一）

from flask import flask

app = flask(__name__)

@app.route('/')
def index():
    return '<h1>hello world</h1>'

app.run()

 

在run（）中添加配置

debug　　是否调试，修改后自动重启， 可以动态调试

threaded　　是否多线程

post　　端口

host　　主机

 

插件、扩展库

1.下载，安装

2.初始化配置

 

flask-script

from flask import flask
from flask_script import manager


app = flask(__name__)

manager = manager(app=app)


@app.route('/')
def index():
    a = 10
    b = 0
    c = a/10
    return '<h1>hello world</h1>'


if __name__=='__main__':
    # app.run(debug=true, port=8000, host='0.0.0.0')
    manager.run()

直接运行没有效果，需要输入参数

(venv) d:\python3\_flask>python hello.py runserver

 * serving flask app "hello" (lazy loading)
 * environment: production
   warning: do not use the development server in a production environment.
   use a production wsgi server instead.
 * debug mode: off
 * running on http://127.0.0.1:5000/ (press ctrl+c to quit)

多个各种参数

(venv) d:\python3\_flask>python hello.py runserver -d -r -h 0.0.0.0 -p 8000

 * serving flask app "hello" (lazy loading)
 * environment: production
   warning: do not use the development server in a production environment.
   use a production wsgi server instead.
 * debug mode: on
 * restarting with stat
 * debugger is active!
 * debugger pin: 184-573-979
 * running on http://0.0.0.0:8000/ (press ctrl+c to quit)

 

flask路由参数

@app.route('/params/<ni>/')
def params(ni):
    return '获取参数' +  ni

@app.route('/get/<string:name>/')
def get_name(name):
    return '获取name' + name
    
@app.route('/get_age/<int:age>/')
def get_age(age):
    return age

#会将斜线认为是字符    
@app.route('/get_path/<path:path>/')
def get_path(path):
    return path

@app.route('/get_uuid/<uuid:id>/')
def get_uuid(id):
    return id.uuid64()

#从列出的元组中的任意一个
@app.route('/get_any/<any(c, d, e):any>/')
def get_any(any):
    return any

请求方法

@app.route('/get_any/<any(c, d, e):any>/', methods = ['get', 'post'])
def get_any(any):
    return any

 

 反向解析

@app.route('/url')
def url():

    print(url_for('get_any', any='c'))
    return '反向解析'