Simon Willison's Weblog: fredrik-lundh

Quoting Fredrik Lundh

2008-07-23T09:28:15+00:00

(It's probably just me, but every time I stumble upon some thread involving people from the so-called "security community", it's like watching a Jerry Springer episode.)

— Fredrik Lundh

Tags: fredrik-lundh, jerryspringer, security

Simple Top-Down Parsing in Python

2008-07-19T23:37:59+00:00

Simple Top-Down Parsing in Python

Eye-opening tutorial on building a recursive descent parser for Python, in Python that uses top-down operator precedence.

Tags: compilers, effbot, fredrik-lundh, parsing, python, recursivedescent

Some Notes on Tim Bray's Wide Finder Benchmark

2007-10-07T01:06:05+00:00

Some Notes on Tim Bray's Wide Finder Benchmark

Fredrik Lundh demonstrates some Python ninja techniques for parsing log files using multiple cores (and eventually memory mapping).

Tags: benchmarks, effbot, fredrik-lundh, mmap, multicore, python, tim-bray

A Django Cache Status

2007-08-25T14:08:56+00:00

A Django Cache Status

Django view to display stats pulled from your memcached server.

Tags: django, fredrik-lundh, memcached

Quoting Fredrik Lundh

2007-08-07T10:52:19+00:00

Inline images are stored as data URI:s in the intermediate format (and usually also in the source documents), but since not all browsers support this format, the renderer replaces the data URI:s with HTTP pointers to an image cache directory.

— Fredrik Lundh

Tags: data-urls, django, fredrik-lundh, http

Thread Synchronization Mechanisms in Python

2007-07-29T21:32:01+00:00

Thread Synchronization Mechanisms in Python

Locks, RLocks, Semaphores, Events and Conditions as explained by Fredrik Lundh.

Tags: conditions, effbot, events, fredrik-lundh, locks, python, rlocks, semaphores, threads, tutorial

Python and micropayments

2003-03-13T18:25:17+00:00

Fredrik Lundh has started posting his book The Standard Python Library online, in response to O'Reilly's decision not to publish a second edition of the book. I'd never read it before, but having sampled the first two chapters I'm hooked. It works a bit like a "cookbook", with a plethora of code samples explained in detail accompanied by tips and tricks relating to the language. The Lazy Import class, which loads a module only when an attribute of the module is called for the first time, is a classic example:

class LazyImport:
    def __init__(self, module_name):
        self.module_name = module_name
        self.module = None
    def __getattr__(self, name):
        if self.module is None:
            self.module = __import__(self.module_name)
        return getattr(self.module, name)

string = LazyImport("string")
print string.lowercase

Frederick plans to release a chapter every Friday until the whole book has been posted. Alernatively, you can buy the whole 1999 edition from him as a PDF file for the princely sum of $5.00, which works out at £3.18 in GBP via PayPal.

I think that was my first ever micropayment.

Tags: fredrik-lundh, python