Don't you mean x=random.randint(0, lenoflist) ?? I'm assuming you want an integer.
On Sun, 23 Jan 2005 21:55:27 +0000 (GMT), David Holland <[EMAIL PROTECTED]> wrote: > --- [EMAIL PROTECTED] wrote: > > Send Tutor mailing list submissions to > > tutor@python.org > > > > To subscribe or unsubscribe via the World Wide Web, > > visit > > http://mail.python.org/mailman/listinfo/tutor > > or, via email, send a message with subject or body > > 'help' to > > [EMAIL PROTECTED] > > > > You can reach the person managing the list at > > [EMAIL PROTECTED] > > > > When replying, please edit your Subject line so it > > is more specific > > than "Re: Contents of Tutor digest..." > > > > > > Today's Topics: > > > > 1. Re: Print record x in a file (Kent Johnson) > > 2. How would python messure up in performance? > > (Kevin) > > 3. Re: How would python messure up in > > performance? (Max Noel) > > 4. Re: Print record x in a file (David Holland) > > 5. on the way to find pi (Ali Polatel) > > 6. Re: on the way to find pi (Max Noel) > > 7. Re: on the way to find pi (Orri Ganel) > > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Sun, 23 Jan 2005 07:46:08 -0500 > > From: Kent Johnson <[EMAIL PROTECTED]> > > Subject: Re: [Tutor] Print record x in a file > > Cc: tutor python <tutor@python.org> > > Message-ID: <[EMAIL PROTECTED]> > > Content-Type: text/plain; charset=ISO-8859-1; > > format=flowed > > > > Since len(listcontents) is one greater than the > > largest valid index of listcontents, the correct > > use of randrange() for this problem is > > x = random.randrange(0, len(listcontents)) > > > > > Kent, > > I know that you know far more about python than me but > is that right ? > I created file with 4 records and this code did print > them all randomly:- > > import random > i = 0 > while i < 10: > file = open('filename') > listcontents = file.readlines() > file.close() > lenoflist = len(listcontents)-1 > x = random.randrange(0,lenoflist) > print listcontents[x], i > i = i +1 > > While although this code below does work many times > nothing is printed out. > import random > i = 0 > while i < 10: > file = open('test.rantxt') > listcontents = file.readlines() > file.close() > lenoflist = len(listcontents)#-1 > x = random.randrange(0,lenoflist) > print listcontents[x], i > i = i +1 > > > ___________________________________________________________ > ALL-NEW Yahoo! Messenger - all new features - even more fun! > http://uk.messenger.yahoo.com > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > -- 'There is only one basic human right, and that is to do as you damn well please. And with it comes the only basic human duty, to take the consequences. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
