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Re: Building lists

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Seymore4Head wrote:
> Say I want a
> Grocery list and it will have a maximum size of 50 items.

In Python it's actually easier to deal with variable-sized
lists having no maximum size. Instead of pre-creating a list
of a given size, just start with an empty list and append
things to it.

Unless there's some external reason for a size limit (e.g.
you can't fit more than 50 items in your shopping bag)
there's no need to impose limit at all. You should
certainly start without a limit and only add it later
if needed.

Some things to get you started:

items = [] # Start with an empty list
items.append("cheese") # Add some items to it
items.append("eggs")
items.append("milk")
for item in items: # Process the items
     print(item)

If you really need to limit the number of items, you
can do something like this:

def add_item(item):
     if len(items) < 50:
         items.append(item)
     else:
         raise Exception("Shopping list is full")

-- 
Greg

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Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 14:10 -0400
  Re: Building lists sohcahtoa82@gmail.com - 2014-10-20 11:18 -0700
    Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 14:21 -0400
      Re: Building lists sohcahtoa82@gmail.com - 2014-10-20 11:33 -0700
        Re: Building lists Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-10-20 20:55 +0100
  Re: Building lists MRAB <python@mrabarnett.plus.com> - 2014-10-20 20:40 +0100
    Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 15:49 -0400
      Re: Building lists Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-20 13:58 -0600
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 16:23 -0400
          Re: Building lists Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-20 14:45 -0600
            Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 16:55 -0400
          Re: Building lists Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-10-20 21:47 +0100
      Re: Building lists Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-10-20 20:57 +0100
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 16:24 -0400
      Re: Building lists Denis McMahon <denismfmcmahon@gmail.com> - 2014-10-20 22:40 +0000
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 18:44 -0400
      Re: Building lists Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-10-21 10:55 +1100
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 20:05 -0400
      Re: Building lists Larry Hudson <orgnut@yahoo.com> - 2014-10-21 00:11 -0700
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-21 08:54 -0400
      Re: Building lists Larry Hudson <orgnut@yahoo.com> - 2014-10-21 00:40 -0700
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-21 08:55 -0400
    Re: Building lists Denis McMahon <denismfmcmahon@gmail.com> - 2014-10-20 22:30 +0000
      Re: Building lists MRAB <python@mrabarnett.plus.com> - 2014-10-20 23:57 +0100
  Re: Building lists John Gordon <gordon@panix.com> - 2014-10-20 20:48 +0000
    Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 17:25 -0400
      Re: Building lists Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-20 15:34 -0600
      Re: Building lists Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-20 21:31 -0400
        Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-21 08:55 -0400
  Re: Building lists Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-10-21 10:54 +1300
    Re: Building lists Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-20 17:57 -0400
  Re: Building lists Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-20 21:27 -0400

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