[EMAIL PROTECTED] wrote:
On May 9, 10:48 am, Paul Rubin <http://[EMAIL PROTECTED]> wrote:
[EMAIL PROTECTED] writes:
I have a dictionary of which i'm itervalues'ing through, and i'll be
performing some logic on a particular iteration when a condition is
met with trusty .startswith('foo'). I need to grab the previous
iteration if this condition is met. I can do something with an extra
var to hold every iteration while iterating, but this is hacky and not
elegant.
You cannot rely on the elements of a dictionary being in any
particular order (dicts are internally hash tables), so the above
is almost certainly ont what you want.
Hi - thanks for your reply. How about if I made the dict into a list
(of
which I have done). How would I then reference the previous item?
Can they
be indexed?
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Yes:
listOfItems = DICT.items()
for i in range(len(listOfItems)):
k,v = listOfItems[i] # Current key,value pair
if whatever:
kPrev,vPrev = listOfItems[i-1] # Previous key,value pair
Still, since there is no proscribed order in which the items are placed
into the list, I wonder how this can be useful. However, this *does*
do what you asked.
Gary Herron
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