反向解析——

# python 3.7
from flask import Flask, url_for

app = Flask(__name__)
print(app,'这里是app')

@app.route('/index')
def index():
    return '<h1>这里是首页</h1>'

@app.route('/admin/login/form/show/<name>')
def show(name):
    return '参数值为：%s'%name

@app.route('/url')
def url():####此处用于反向解析
    # 通过index()解析出对应的访问路径，，此处开始进行反向解析
    url_index= url_for('index')
    url_show= url_for('show',name='liu')
    print(url_show)
    return '<a href="%s">wee</a>'%url_show


if __name__ == '__main__':
    app.run(debug=True)