On Sun, 07 Sep 2008 14:51:32 -0700, [EMAIL PROTECTED] wrote:
> MAPPING_DICT = {
> 'a': 'A',
> 'b': 'B',
> }
>
> my_dict = {
> 'a': '1',
> 'b': '2'
> }
>
> I want the finished my_dict to look like:
>
> my_dict = {
> 'A': '1',
> 'B': '2'
> }
>
> Whereby the keys in the original my_dict have been swapped out for the
> keys mapped in MAPPING_DICT.
>
> Is there a clever way to do this, or should I loop through both,
> essentially creating a brand new dict?
You only have to loop through `my_dict`:
In [187]: %cpaste
Pasting code; enter '--' alone on the line to stop.
:MAPPING_DICT = {
: 'a': 'A',
: 'b': 'B',
:}
:
:my_dict = {
: 'a': '1',
: 'b': '2'
:}
:--
In [188]: dict((MAPPING_DICT[k], v) for k, v in my_dict.iteritems())
Out[188]: {'A': '1', 'B': '2'}
Ciao,
Marc 'BlackJack' Rintsch
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