dictionary with tuples

[Igor Korot]

Hi, ALL,
C:\Documents and Settings\Igor.FORDANWORK\Desktop\winpdb>python
Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> dict = {}
>>> dict[(1,2)] = ('a','b')
>>> dict[(3,4)] = ('c','d')
>>> for (key1,key2),(value1,value2) in dict:
...     print key1, " ", key2
...     print value1, " ", value2
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'int' object is not iterable
>>>

What am I doing wrong?

Thank you.