python: find only common key-value pairs of several dicts: dict intersection

Question

I have 0 or more dicts in a list:

>>> dicts = [dict(a=3, b=89, d=2), dict(a=3, b=89, c=99), dict(a=3, b=42, c=33)]

I want to create a new dict that contains only keys that are in all the above dicts, and only if the values are all the same:

>>> dict_intersection(*dicts)
{"a": 3}

I feel that there should be an elegant way of writing dict_intersection, but I'm only coming up with inelegant and/or inefficient solutions myself. Suggestions?

Answer 1

>>> dict(set.intersection(*(set(d.iteritems()) for d in dicts)))
{'a': 3}

Note: This solution requires the dictionary values to be hashable, in addition to the keys.