Meetup API address_1_error

25 Sep 2014 I was getting this error while using the POST /venues method of the meetup API.

The error seems to happen when you duplicate the address of another venue. I was able to add the venue, but when I tried to add it a second time - I would get this error.

I ended up getting the list of venues and trying to find a match first.

16 Sep 2014 The error message looks like this:
{u'status': {u'http_code': 200}, u'contents': {u'error': {u'error_type': u'Application Key Error', u'error_message': u'Please provide your Application Key in the URL as "?app_key=<APP_KEY>".'}}}

After a few hours of trying to get past the Eventbrite API's "Application Key Error". I finally figured out that I needed to switch my request URL from:
"https://developer.eventbrite.com/json/event_new"
to:
"https://www.eventbrite.com/json/event_new"

dc.js + Crosstab: Chart With Linked Table

14 Sep 2014 http://dc-js.github.io/dc.js/

Flask OAuthLib Examples

13 Sep 2014 https://github.com/lepture/flask-oauthlib/blob/master/example/github.py
https://github.com/bjourne/vvm/blob/master/app/users/views.py

Override get_query based on GET parameter - Flask-Admin

10 Sep 2014

This will change the results in a flask-admin index view based on GET parameters. In most cases, using filters to do this is probably a better idea.

from application import db from application.views.modelview import ModelView from application.models import Things # has an attribute called thing_type class MyModelView(ModelView): def get_query(self): thing_type = request.args.get('type', None) # pretending we have a GET parameter called "type" if thing_type == "type1": return super(ModelView, self).get_query().filter(Things.thing_type.like('type1 %')) elif thing_type == "type2": return super(ModelView, self).get_query().filter(Things.thing_type.like('type2 %')) else: return super(ModelView, self).get_query() # note, you can't define get_query inside of def index_view(self)

Changing A Single GET Parameter In Request - Flask

10 Sep 2014

from application import app from flask import request, url_for, redirect @app.route('/') def index(): modified_args = dict(request.args) modified_args['key'] = 'modified_value' return redirect(url_for('my_view', **modified_args))

SQLAlchemy Performance Tip

03 Sep 2014 http://www.mobify.com/blog/sqlalchemy-memory-magic/

"If you can process the results of database queries iteratively (and very often you can), stream the results"

"Since the data needs to travel over the network from the database whether it's streamed or not, this doesn't add a huge overhead, but we'll see that it reduces memory requirements."

Example (using Flask-SQLAlchemy):
db.engine.execution_options(stream_results=True).execute(query)

However, that's not the full story when it comes to MySQLdb (MySQL-python). http://stackoverflow.com/a/3699677

If you're going to do this with mysql, I recommend using oursql: https://pypi.python.org/pypi/oursql

Enable Threading - Flask

03 Sep 2014 http://stackoverflow.com/a/14823968/1364191

If you're going to be expecting more than one user on your flask server, you need to enable threading like this: app.run(host='0.0.0.0', port=5000, threaded=True)

Unfortunately, the threading makes Ctrl+C not work sometimes and I'll have to kill the thread manually.

For better solutions for production, check out these WSGI solutions: http://flask.pocoo.org/docs/0.10/deploying/wsgi-standalone/

Older Newer

Paul's Programming Notes Archive Feed Github