any better code to initalize a list of lists?

[Paul Rubin]

"John" <rds1226 at sh163.net> writes:
> For my code of radix sort, I need to initialize 256 buckets. My code looks a 
> little clumsy:
> 
> radix=[[]]
> for i in range(255):
>     radix.append([])
> 
> any better code to initalize this list? 

Typically you'd say 
   radix = [[] for i in xrange(256)]

but what are you really doing?  This plan to implement radix sorting
sounds a little bit odd, unless it's just an exercise.

You could also consider using a dictionary instead of a list,
something like:

   radix = defaultdict(list)