# -*- coding: utf-8 -*-from flask import Flask, request, url_forapp = Flask(__name__)@app.route("/")def hello():    return "Hell2323o23 World!"@app.route('/user', methods=['POST']) #默认是get方式def hello_user():    return 'hello user'@app.route('/users/
     
      ')   #传递参数方式1 访问localhost:7999/users/10def user_id(id):    return 'hello world'+id@app.route('/query_user', methods=['POST']) #传递参数方式2 访问localhost:7999/users?id=10def query_user():    id = request.args.get('id')    return 'query_user:'+id@app.route('/query_url')def query_url():    return 'query_url：：:'+url_for('query_user') #反倒上面query_user函数的URL#反向路由就是从视图函数反倒出URL地址if __name__ == "__main__":    app.debug = True    app.run( port=7999)