python - Flask app won't load in browser -

i'm getting started flask , i'm trying build tutorial micro-blog using redis. here app:

from flask import flask, render_template, request, url_for, redirect import redis datetime import datetime  app = flask(__name__) app.config.from_object(__name__)  app.config.update(dict(     debug = true,     ))  pool = redis.connectionpool(host='localhost', port=6379, db=0)  @app.route("/") def index():     r = redis.strictredis(connection_pool = pool)     print r     pipe = r.pipeline()     print pipe     last_ten = pipe.zrange('post:created_on', 0, 9)     print last_ten     posts = []     post in last_ten:         posts.append(pipe.hgetall('{}{}'.format('post:', post)))       print posts     pipe.execute()      return render_template('index.html', posts)    @app.route('/new', methods = ['post']) def addpost():     r = redis.strictredis(connection_pool = pool)      title = request.form['title']     author = request.form['author']     = datetime.now()      pipe = r.pipeline()     post_format = 'post:'     pid = pipe.incr('post')     pipe.hmset('{}{}'.format(post_format,pid), {'title':title, 'author':author})     pipe.zadd('post:created_on', pid = now)     pipe.execute()      return redirect(url_for('index'))  if __name__ == "__main__":     app.run() 

when run python testapp.py get

* running on http://127.0.0.1:5000/ * restarting reloader 

however page never loads @ http://127.0.0.1:5000/ nor return error. hangs, trying load forever. i've left while , keeps on going. i'm not sure causing thank help.

update: have added several print statements in index view see happening while code runs , printed terminal.

* running on http://127.0.0.1:5000/ * restarting reloader strictredis<connectionpool<connection<host=localhost,port=6379,db=0>>> strictpipeline<connectionpool<connection<host=localhost,port=6379,db=0>>> strictpipeline<connectionpool<connection<host=localhost,port=6379,db=0>>> 

i believe have solved issue. problem opened pipeline , tried acting on data retrieved db before had called pipe.execute. i'm still working on getting overall function work how solved particular issue.