Complex datastructures in Python

[Aahz Maruch]

In article <8jb6jr$2uov$1 at news.enteract.com>,
Greg Gallagher  <ggallag at red-bean.com> wrote:
>
>I'm a little disheartened here... I know how to do this in Perl, but I'm
>lost in Python and 
>searching for 'complex data structures' is landing me nowhere. 
>Basically,  I want
>a dictionary whosevalues are lists of dictionaries.  Simple.
>I want to basically loop through some data and so something like this:
>
>while loop:
>   new_forward = {'ip' : ip_address,
>                  'hostname' : hostname,
>                  'mac_address' : mac_address}
>
>   forward[domain].append(new_forward)

Try this:

  if forward.has_key(domain):
    forward[domain].append(new_forward)
  else:
    forward[domain] = [new_forward]
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