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dictionary - Using Python's max to return two equally large values

I'm using Python's max function to find the largest integer in a dictionary called count, and the corresponding key (not quite sure if I'm saying it properly; my code probably explains itself better than I'm explaining it). The dictionary count is along the lines of {'a': 100, 'b': 210}, and so on.

number = count[max(count.items(), key=operator.itemgetter(1))[0]]
highest = max(count, key=count.get)

What would I do if there were two equal largest values in there? If I had {'a': 120, 'b': 120, 'c': 100}, this would only find the first of a and b, not both.

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Idea is to find max value and get all keys corresponding to that value:

count = {'a': 120, 'b': 120, 'c': 100}

highest = max(count.values())

print([k for k, v in count.items() if v == highest])

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