Populating a dictionary, fast

Marc 'BlackJack' Rintsch bj_666 at gmx.net
Sun Nov 11 19:04:02 CET 2007


On Sun, 11 Nov 2007 08:51:37 -0800, Michael Bacarella wrote:

>> As others have pointed out there is no way that this takes 45
>> minutes.Must be something with your system or setup.
>>
>> A functionally equivalent code for me runs in about 49 seconds!
>> (it ends up using about twice as much ram as the data on disk)
> 
> You can download the list of keys from here, it's 43M gzipped:
>     http://www.sendspace.com/file/9530i7
> 
> and see it take about 45 minutes with this:
> 
> $ cat cache-keys.py
> #!/usr/bin/python
> v = {}
> for line in open('keys.txt'):
>         v[long(line.strip())] = True

Takes about 40 seconds here.

bj at s8n:~$ time python test.py

real    0m38.758s
user    0m25.290s
sys     0m1.580s

Ciao,
	Marc 'BlackJack' Rintsch



More information about the Python-list mailing list