dict_interdiff.py

def dict_interdiff(d1, d2):
    '''
    d1, d2: dicts whose keys and values are integers
    Returns a tuple of dictionaries according to the instructions above
    '''
    intersect = {}
    difference = {}
    
    for key in d1.keys():
        if d2.has_key(key):
            # add common keys
            intersect[key] = f(d1.get(key), d2.get(key))
        else:
            # add keys of d1 that does not appear in d2
            difference[key] = d1.get(key)
            
    for key in d2.keys():
        if not d1.has_key(key):
            # add keys of d2 that does not appear in d1
            difference[key] = d2.get(key)
            
    return (intersect, difference)