Compare two nested dictionaries

[targetsmart]

Hi,
I am trying to compare two nested dictionaries, I want to know what is
the exact difference between them. I tried this solution

...
        s1 = set(result1)
        s2 = set(result2)
        print s1 - s2

but it doesn't seem show any difference, but

assert result1 == result2
fails

could someone help me to find out the difference the two nested
dictionaries.

Any help is greatly appreciated.

Thanks,
Vivek.