Trying to understand working with dicts

[inshu chauhan]

Hello everyone,

Here in my part of the code where cc is a dictionary. I want to understand
what actually cc.iterkeys() and cc[k] actually doing.
I am already reading
http://docs.python.org/2/library/stdtypes.html#dict.items
and http://www.tutorialspoint.com/python/python_dictionary.htm but still
not very clear.

cc = Computesegclass(segimage, refimage)
    for k in sorted(cc.iterkeys()):
        i = argmax(cc[k])
        print >> f, i+1

Thanks in Advance
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