A Python 3000 Question

Neil Cerutti horpner at yahoo.com
Wed Oct 31 13:44:53 CET 2007


On 2007-10-30, George Sakkis <george.sakkis at gmail.com> wrote:
> On Oct 30, 11:25 am, Neil Cerutti <horp... at yahoo.com> wrote:
>> On 2007-10-30, Eduardo O. Padoan <eduardo.pad... at gmail.com> wrote:
>>
>> > This is a FAQ:
>> >http://effbot.org/pyfaq/why-does-python-use-methods-for-some-function...
>>
>> Holy Airy Persiflage Batman!
>>
>> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on
>> win32
>> Type "help", "copyright", "credits" or "license" for more information.>>> import timeit
>> >>> timeit.Timer('len(seq)', 'seq = range(100)').timeit()
>> 0.20332271187463391
>> >>> timeit.Timer('seq.__len__()', 'seq = range(100)').timeit()
>>
>> 0.48545737364457864
>
> Common mistake; try this instead:
>
> timeit.Timer('seqlen()',
>              'seq = range(100); seqlen=seq.__len__').timeit()

Why would I want to do that?

-- 
Neil Cerutti
These people haven't seen the last of my face. If I go down, I'm going down
standing up. --Chuck Person



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