On 09/08/2012 21:41, Roman Vashkevich wrote:
dict.items() is a list - linear access time whereas with 'for key in dict:'
access time is constant:
http://python.net/~goodger/projects/pycon/2007/idiomatic/handout.html#use-in-where-possible-1
10.08.2012, в 0:35, Tim Chase написал(а):
On 08/09/12 15:22, Roman Vashkevich wrote:
{(4, 5): 1, (5, 4): 1, (4, 4): 2, (2, 3): 1, (4, 3): 2}
and i want to print to a file without the brackets comas and semicolon in order
to obtain something like this?
4 5 1
5 4 1
4 4 2
2 3 1
4 3 2
for key in dict:
print key[0], key[1], dict[key]
This might read more cleanly with tuple unpacking:
for (edge1, edge2), cost in d.iteritems(): # or .items()
print edge1, edge2, cost
(I'm making the assumption that this is a edge/cost graph...use
appropriate names according to what they actually mean)
-tkc
I'm impressed, the OP gives a dict with five entries and already we're
optimising, a cunning plan if ever there was one. Hum, I think I'll
start on the blast proof ferro-concrete bunker tonight just in case
WWIII starts tomorrow.
--
Cheers.
Mark Lawrence.
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