Newbie: last item of a loop

[Cecil H. Whitley]

> On Fri, 02 May 2003 14:38:09 +0200, Sven Brandt <
sven_NOSPAM at manastar.de>

wrote:
>
> >Hi Anton,
> >
> >to be more precise:
> >
> >I have a list of names which I want as a joined string, seperated by
> >kommas except for the last item which is seperated by 'and'. ['Peter',
> >'Paul','Mary'] -> 'Peter, Paul and Mary'
> >
*snip*

Here is my solution:
names = ["a","b","c"]
if len(names)>1:
 lines = ", ".join(names[0:len(names)-1])
 lines = lines + " and " + names[len(names)-1]
else:
 lines = names[0]

print lines

In this case names cannot be an empty list.  Extending the else to
else if len(names)==1: see above
    else: lines = ""
would even handle that case.  I ran this code through test cases of 1, 2,
and 3 names.  Any logic errors?
Cecil