1,069 items tagged “python”
The Python programming language.
2008
Python one-liner of the day. I love the idea of publishing one-liners accompanied by one-line test suites.
Generator Tricks for Systems Programmers. The best tutorial on Python’s powerful generator feature I’ve seen anywhere.
Multiple inheritance of newforms and modelforms. If you ever see “Error when calling the metaclass bases metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases” when trying multiple inheritance with newforms and modelforms, here’s a scary solution I found.
Active on IRC in the past hour. New Django People feature in collaboration with Brian Rosner—DjangoBot now provides information on currently active IRC participants. There’s an opt-out privacy control and the bot sends you a message about it the first time it logs your activity.
Google App Engine for developers. Best in-depth coverage so far, from Niall Kennedy. I didn’t know that Guido had worked on the Django compatibility layer.
The Google App Engine model class, db.Model, is not the same as the model class used by Django. As a result, you cannot directly use the Django forms framework with Google App Engine. However, Google App Engine includes a module, db.djangoforms, which casts between the datastore models used with Google App Engine and the Django models specification. In most cases, you can use db.djangoforms.ModelForm in the same manner as the Django framework.
Running Django on Google App Engine. Django 0.96 is included, but you need to disable the ORM related parts and use the Google App Engine Bigtable interface instead.
Google App Engine. Write applications in Python using a WSGI compatible application framework, then host them on Google’s highly scalable infrastructure. The most exciting part is probably the Datastore API, which provides external developers with access to Bigtable for the first time.
Why the webstandards world appears to be choosing Django. I’m not convinced that this is a definite trend, but it certainly makes for an interesting discussion.
Python-by-example. “This guide aims to show examples of use of all Python Library Reference functions, methods and classes”, thus addressing my number one complaint about Python’s standard library documentation.
Django Development with Djblets. The Review Board team have extracted a library of useful Django utilities from their application. The first to be documented are helpers for reducing boilerplate in custom template tags.
Graphication. Andrew Godwin’s Python graphing library, based on Cairo. Responsible for the very handsome graphs on The Carbon Account.
Exposing calendar events using iCalendar in Django. A simple abstraction around the vobject Python library.
xPyUnit: Uniting in Python with XML reporting. Should be just the ticket for integrating Django’s testing framework with Cruise Control.
Setup mod_wsgi for Django and Shared Hosting. Tutorial by David Cramer; attached are useful comments from mod_wsgi author Graham Dumpleton.
Djangofriendly (via) Ryan Berg’s attractive new site collecting ratings and reviews for web hosts that support Django. I’m still happily hosted on a bytemark VPS, which isn’t currently listed on the site.
Better Use of Newforms. Two really neat techniques: using an inclusion tag template to DRY your custom form templates, and adding what-to-do-next methods to the form class itself to cut down on the application code in your views.
fireeagle_api.py. Steve Marshall’s Fire Eagle python binding on GitHub.
PownceFS. Not a joke: it’s a Fuse filesystem (written in Python, using OAuth for authentication) which exposes a directory for each of your friends on Pownce containing the files that they have uploaded.
views.py for wikinear.com (via) I’ve published the views.py file from wikinear.com as an example of simple Fire Eagle integration with a Django application.
Monkeypatching is Destroying Ruby (via) Deliberately provocative title, but makes a well considered case for restrained use of monkey patching in Ruby. Cultural norms around monkey patching seem to me to be one of the core differences between the Ruby and Python communities.
Version 2.0 of mod_wsgi is now available. Includes features that should make Python (and Django) on shared hosting much easier: a non-root user can touch their WSGI script file to restart just their application’s daemon processes when they make changes and Python virtual environments are supported to allow different versions of packages without interference.
mysql_cluster (via) My Russian isn’t all that good, but this looks like a neat way of getting Django to talk to a master/slave setup, written by Ivan Sagalaev. UPDATE: English docs are linked from the comments.
A Toy Chat Server with Eventlet and Mulib (via) Eventlet (the Python non-blocking IO library originally written for Second Life) is ideally suited to building Comet servers; Chuck Thier demonstrates a simple chat server in a small amount of code.
Simple Exception Response for AJAX debugging. Neat solution to the problem of Django error pages showing up as raw HTML in the Firebug Ajax log.
IronPython, MS SQL, and PEP 249. How Dino Viehland got Django’s ORM to talk to the .NET database layer.
Queryset Implementation. Malcolm explains the work that has gone in to the queryset-refactor branch. Executive summary: Python’s ORM is probably a lot better at SQL than you are.
Integrating reCAPTCHA with Django. Looks pretty straight forward.
Django on IronPython. Dino Viehland demonstrated Django running on IronPython and SQL Server at PyCon.
Hacking Contributed Models. Neat Django trick using monkeypatching to make some minor tweaks to built-in contributed models such as auth or flatpages.