Dictionaries with tuples or tuples of tuples
Mitya Sirenef
msirenef at lightbird.net
Mon Feb 18 20:11:05 EST 2013
On 02/18/2013 07:52 PM, Jon Reyes wrote:
> So I have a dictionary and the key is a number. The values are either a single tuple or a tuple of
tuples. Is there a better way to go about accessing the values of the
dictionary? All the tuples contain four elements.
>
> So say:
> col = {"1": (0,1,2,3): "2": ((0,1,2,3),(2,3,4,5))}
>
> Then to access the values of the tuple I'd do this:
>
> for key,value in col.iteritems():
> if isinstance(value[0], tuple):
> #iterate through the tuples of a tuple
> else:
> #iterate through the tuple
>
> At first I was thinking that I could just put the same keys with just
single tuples on a dictionary but only one tuple exists when I iterate
through the dictionary. I'm sorry, I'm really new at Python and I just
grab anything I can when I need it from Google and the Python docs.
It would be easier to process if, when adding a single tuple
to the dict, you could wrap it inside a tuple: (mytup,)
If your data set is not very large and you don't mind the
slight performance hit, you can simplify processing step:
for k,v in col.iteritems():
if not isinstance(v[0], tuple):
v = (v,)
for tup in v: ...
--
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