William O'Higgins Witteman wrote:
> I'm trying to traverse a dictionary looking for partial matches of the
> key, and I'm not sure how. Here's a sample dictionary:
>
> dict = {00001234 : value1, 20051234 : value2, 20071234 : value3}
>
> Here's what I'm trying to do:
>
> for key in dict:
> if key == 0000???? or key == 2005????:
if key.startswith('0000') or key.startswith('2005'):
or with a regular expresion:
if re.match('0000|2005', key):
> do something with dict[key]
>
> The challenge is that I only care about the first four digits of the key
> for the purpose of this match - is there a way to express this? I could
> probably create a wrapper dictionary using just the first four digits of
> the key as they key, and containing the original key:value pair as a
> list within it, but that seems cumbersome. Any one have a suggestion?
If you have a *lot* of keys and need more speed, that might be a good
optimization. For a small dict, just use startswith().
Kent
> Thanks.
>
>
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