Dictionary as non-iterable object?

[Rob Liebscher]

Hi,

My apologies for the simplicity of this question, and if it's been
discussed before.  (I'm very new to Python.)  The deal is this: using
the IDLE interpreter (directly from www.python.org), I can do the
following:

>>> D = {(4, 6): 13, (4, 3): 12, (5, 2): 11, (2, 5): 8, (1, 2): 9}
>>> for x,y in D:
	print D[(x,y)]

13
12
11
8
9
10
>>> 

Fine, right?  Unfortunately, ActiveState's latest version does not
allow me to do this, saying that I can't iterate over a dictionary's
keys.  This happens regardless of how many vars I use: for x, for x,y,
and for x,y,z all complain.  (IDLE complains on the first and third
because of a tuple unpack of the wrong size.)

Any ideas?  I just want to be able to iterate over all entries in a
dictionary that has 2-tuples as keys, as in the above, so a method to
do this would be a satisfactory answer.  Thanks.