Simon Willison’s Weblog

3 items tagged “davidmbeazley”

Reexamining Python 3 Text I/O. Python 3.1’s IO performance is a huge improvement over 3.0, but still considerably slower than 2.6. It turns out it’s all to do with Python 3’s unicode support: When you read a file in to a string, you’re asking Python to decode the bytes in to UTF-8 (the new default encoding) at the same time. If you open the file in binary mode Python 3 will read raw bytes in to a bytestring instead, avoiding the conversion overhead and performing only 4% slower than the equivalent code in Python 2.6.4. # 28th January 2010, 1:28 pm

A Curious Course on Coroutines and Concurrency. David Beazley’s sequel to last year’s mind-expanding “Generator Tricks for System Programmers”, perfect for if you’ve ever puzzled over what exactly you can use Python’s generator-based coroutine support for. # 24th April 2009, 10:58 am

Generator Tricks for Systems Programmers. The best tutorial on Python’s powerful generator feature I’ve seen anywhere. # 24th April 2008, 10:17 am