gistfile1.py

import berry
from berry import path, render, redirect
from models import Post

def index():
    posts = Post.query.all()
    return render('index', {'posts': posts})
path('^$').GET = index

def post(id):
    post = Post.get_by(id=id)
    if not post:
        redirect('/')
    return render('post', {'post': post})
path('^(\d+)/?$').GET = post

berry.start()