On Thu, Jun 02, 2016 at 06:05:43PM +0100, Olaoluwa Thomas wrote:
> fname = raw_input('Enter file name:\n')
> try:
> fhand = open(fname)
> except:
> print 'File cannot be found or opened:', fname
> exit()
> lst = list()
> for line in fhand:
> words = line.split()
> #print words (this was a test that a portion of my code was working)
> lst.append(words)
If you printed words, you should have seen that it was a list.
If you append a list to a list, what do you get? At the interactive
prompt, try it:
py> L = [1, 2, 3]
py> L.append([4, 5, 6])
py> L
[1, 2, 3, [4, 5, 6]]
Append takes a single argument, and adds it *unchanged* to the end of
the list.
What you want is the extend method. It takes a list as argument, and
appends each item individually:
py> L.extend([7, 8, 9])
py> L
[1, 2, 3, [4, 5, 6], 7, 8, 9]
But if you didn't know about that, you could have done it the
old-fashioned way:
lst = list()
for line in fhand:
words = line.split()
for word in words:
lst.append(word)
--
Steve
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
