按键对字典列表中的值进行分组

def group_values_by_key(dict_list):
    result_dict = {}
    for d in dict_list:
        for key, value in d.items():
            if key not in result_dict:
                result_dict[key] = [value]
            else:
                result_dict[key].append(value)
    return result_dict

# 示例用法
dict_list = [
    {"key1": "value1", "key2": "value2"},
    {"key1": "value3", "key2": "value4"},
    {"key1": "value5", "key2": "value6"},
    {"key3": "value7", "key4": "value8"}
]

result = group_values_by_key(dict_list)
print(result)

{
    "key1": ["value1", "value3", "value5"],
    "key2": ["value2", "value4", "value6"],
    "key3": ["value7"],
    "key4": ["value8"]
}