在一定数量的python字典中查找相同的in

def find_duplicate_keys(dictionaries):
    all_keys = set()
    duplicate_keys = set()

    for dictionary in dictionaries:
        for key in dictionary.keys():
            if key in all_keys:
                duplicate_keys.add(key)
            else:
                all_keys.add(key)

    return duplicate_keys

from collections import Counter

def find_duplicate_keys(dictionaries):
    all_keys = Counter()

    for dictionary in dictionaries:
        all_keys.update(dictionary.keys())

    duplicate_keys = {key for key, count in all_keys.items() if count > 1}

    return duplicate_keys