On Apr 12, 5:38 pm, "Scott" <[EMAIL PROTECTED]> wrote: > I'm going to start grouping all my questions in one post as this is my > second today, and sorta makes me feel dumb to keep having to bother you all > with trivial questions. I'll just seperate my questions with: > ------------------------------------------------------------------------------------------- > Now onto the issue: > List's and Tuple's > I don't see the distinction between the two. I mean, I understand that a > list is mutable and a tuple is immutable. > The thing that I dont understand about them is what, besides that, seperates > the two. I did a little experimentation to try to understand it better, but > only confused myelf more. > > A list looks like this: > > >>>my_list = [1, 2, 3, 4, 5, 6] > > and a tuple looks like this: > > >>>my_tuple = (1, 2, 3, 4, 5, 6) > > Now you can add to a list, but not a tuple so: > > >>>my_list.append(my_tuple) #or extend for that matter right? > > [1, 2, 3, 4, 5, 6, (1, 2, 3, 4, 5, 6)] > > Is that pretty much accurate? And which is better on resources....I'm > guessing a tuple seeing as it doesn't change. > > And the last example brings up another question. What's the deal with a > tupple that has a list in it such as: > > >>>my_tupple = (1, 2, 3, 4, 5, [6, 7, 8, 9]) > > Now I read somewhere that you could change the list inside that tupple. But > I can't find any documentation that describes HOW to do it. The only things > I CAN find on the subject say, "Don't do it because its more trouble than > it's worth." But that doesn't matter to me, because I want to know > everything. > --------------------------------------------------------------------------------------------- > > Now there comes append. I read everywhere that append only add's 1 element > to the end of your list. But if you write:>>> my_list = [1, 2, 3, 4, 5, 6] > >>> my_list.append([7, 8, 9, 10]) > >>> my_list > > [1, 2, 3, 4, 5, 6, [7, 8, 9, 10]] > > Is that because list's, no matter what they contain, are counted as 1 > element?
Right, but I didn't see the following mentioned elsewhere, so note that: What you probably wanted to use to add [7,8,9,10] to your list was .extend() not .append(). >>> my_list = [1, 2, 3, 4, 5, 6] >>> my_list.extend([7, 8, 9, 10]) >>> my_list [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] > > And how would you sort the list that's in the list? I guess that goes in > conjunction with the section above, but still:>>> my_list = [6, 4, 3, 5, 2, 1] > >>> my_list.append([7, 9, 8, 10]) > >>> my_list.sort() > >>> my_list > > [1, 2, 3, 4, 5, 6, [7, 9, 8, 10]] > > This is, again, something I'm finding nothing on. > --------------------------------------------------------------------------------------------- > > Maybe I'm just not looking in the right spots. The only things I have as > learning aids are: this newsgroup > ;p,http://diveintopython.org,http://python.org/, Beggining Python: From > Novice to Professional, and (now > don't laugh) Python for Dummies. -- http://mail.python.org/mailman/listinfo/python-list
