基于列表中来自字典的值的Python>Finding键

def find_key_in_list_of_dicts(target_value, list_of_dicts):
    for dictionary in list_of_dicts:
        if target_value in dictionary.values():
            return dictionary.keys()[list(dictionary.values()).index(target_value)]
    return None

# 示例用法
list_of_dicts = [
    {"name": "Alice", "age": 25},
    {"name": "Bob", "age": 30},
    {"name": "Charlie", "age": 35}
]

target_value = 30
result = find_key_in_list_of_dicts(target_value, list_of_dicts)
print(result)  # 输出：age