[Tutor] Why does counting to 20 million stress my computer? (original) (raw)
Eric at Zomething eric at zomething.com
Sat Jul 17 22:04:47 CEST 2004
- Previous message: [Tutor] msvcrt.getch()
- Next message: [Tutor] alphabetizing a file by lines
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Danny Yoo <dyoo at hkn.eecs.berkeley.edu> wrote:
In this case, range() is a good tool for this job, because it gives us a list that we can munge up with random.shuffle(). xrange() gives us just an iterable that's specialized only to do sequential counting, so it wouldn't be as appropriate here.
Can anyone suggest how I might make the following a bit more efficient in terms of RAM usage (without having to do any additional file operations)?
maxNumber=672,000 maxSample=20,000 nixList=completedNumbers # a list constructed from pickled data on file for x in random.Random().sample(xrange(maxNumber),maxSample): if (str(x) not in nixList): # do a bunch of processing # pickle numbers successfully processed for later reference in nixList
"""Thanks!"""
Eric Pederson http://www.songzilla.blogspot.com ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::e-mail me at: do at something.com except, increment the "d" and "o" by one letter and spell something with a "z" ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
- Previous message: [Tutor] msvcrt.getch()
- Next message: [Tutor] alphabetizing a file by lines
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]