There are loads of little commands in vim for navigating around your files. One of the ones I like the most is gd, for "go to local declaration". What that does - or is supposed to do - is find the place at which the identifier under the cursor is declared or ...
I spend a lot of time in the Python shell - specifically, IPython. Like many Python programmers, I find it invaluable for delving into the structure of objects, exploring their members, running their methods, and so on. It's really the dynamic language's answer to the really good IDE support ...
more ...It should be reasonably well-known by now that querysets are lazy. That is, simply instantiating a queryset via a manager doesn't actually hit the database: that doesn't happen until the queryset is sliced or iterated. That's why the first field definition in the form below is safe ...
more ...I'm starting to blog again more regularly, but of course half the fun of having your own blog is mucking about with the technology that powers it. Encouraged by others who've recently made the switch, I've moved this blog over to the static page generation system Pelican ...
more ...Since I started working at Google, I've been doing almost all my development using vim through the terminal. Since my last post on the subject (over a year ago - bad blogger), I've discovered some significant improvements to what I recommended there, and I thought I'd share what ...
more ...I'm a very happy user of MacVim, which very nicely integrates vim into a native Mac app. But occasionally I need to edit code via a terminal, which means dropping back to plain old vim. Recently I found myself working on a project that was distributed on a self-contained ...
more ...There's a question I see quite a lot at StackOverflow and the Django Users group regarding aggregation in Django. It goes like this: I know how to annotate a max/min value for a related item on each item in a queryset. But how do I get the actual ...
more ...Here are the slides from my talk at Europython 2010, Advanced Django ORM Techniques.
The talk is mainly a summary of the query optimisation tricks I've previously talked about on this blog, although I did begin by explaining briefly how models, fields ...
more ...I previously wrote about a thread-safety bug I encountered in writing a middleware object. I recently found a very similar situation in a class-based view I was modifying, and thought it was worth writing up what the problem was and how I solved it. Interestingly, there's a discussion going ...
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