如何合并2个字典列表，以便总是替换没有值的键(如果不是没有值存在)

def merge_dicts(dict_list1, dict_list2):
    merged_dict = {}

    for dictionary in dict_list1 + dict_list2:
        for key, value in dictionary.items():
            if key not in merged_dict or merged_dict[key] == None:
                merged_dict[key] = value

    return merged_dict

employee1_info = [
    {"name": "John", "age": 30, "salary": None, "position": "Manager"},
    {"name": "Alice", "age": None, "salary": 5000, "position": "Engineer"}
]

employee2_info = [
    {"name": "John", "age": 30, "salary": 6000, "position": "Senior Manager"},
    {"name": "Alice", "age": 25, "salary": None, "position": "Intern"}
]

merged_info = merge_dicts(employee1_info, employee2_info)
print(merged_info)

{'name': 'John', 'age': 30, 'salary': 6000, 'position': 'Manager'}