How to return ordered keys after counter counts the quantity

x = Counter({'a':10, 'b':3, 'c':7}) The return is counterCounter({'a': 10, 'c': 7, 'b': 3}), I just want to take out the orderly key, How do you do that ？

• If used directly x.keys() The return is dict_keys(['a', 'b', 'c']), Not the order we want
• Use x.most_common(3) Return the most frequent 3 individual keys[('a', 10), ('c', 7), ('b', 3)], Are tuples and lists
• The correct approach ：sorted(x, key=x.get, reverse=True) Returns the ['a', 'c', 'b']