On Tue, Aug 10, 2010 at 9:59 AM, bob gailer <bgai...@gmail.com> wrote: > On 8/10/2010 10:42 AM, Bill Allen wrote: >> >> Bob, >> >> I was really off on that algorithm and had way over complicated it. >> I have it working correctly now, but for the sake of those who saw my >> earlier really botched code, here is the resultant code that works. >> The entire inner loop and intermediate variables are removed, but >> shown commented out. I had somehow thought I needed to read each >> member of each subarray in individually. That was not the case and >> that inner loop was overwriting the array. >> >> # reads one line at a time from file and puts data into array >> for line in textf: >> #tempwords = line.split(None) >> #for n in range(0, len(room)-1): >> # roomx[n] = tempwords[n] >> #room[m] = roomx >> room[m] = line.split(None) >> m += 1 >> >> > > Great. Good work. Teach a man to fish? > > Now for the refinements. First you can use enumerate to obtain the room > index: > > for m, line in enumerate(textf): > room[m] = line.split(None) > > > Second you can start with an empty list and append: > > rooms = [] > for line in textf: > rooms.append(line.split(None)) > > Third you can use list comprehension: > > rooms = [line.split(None) for line in textf] > > > -- > Bob Gailer > 919-636-4239 > Chapel Hill NC > >
Bob, Great pointer! I had not gotten back on the email until just now. I figured out the second method today on my own. That third method is fascinating. I have not heard of "list comprehension" before. That must be unique Python lingo. What is the principle behind that? Thanks for the help. Bill _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
