routes.py

from flask import render_template
from app import app


@app.route('/')
@app.route('/index')
def index():
    item = {
        "msg": "后台传递信息"
    }
    return render_template('index.html', title="梦想橡皮擦", item=item)


@app.route('/bt')
def bt():
    return render_template('bt.html')