获取嵌套的python dict键和值，并将其放入列表中

def get_nested_dict_items(dictionary):
    items = []
    for key, value in dictionary.items():
        if isinstance(value, dict):
            nested_items = get_nested_dict_items(value)
            items.extend([(key + '.' + k, v) for k, v in nested_items])
        else:
            items.append((key, value))
    return items

# 示例字典
nested_dict = {
    'key1': 'value1',
    'key2': {
        'key3': 'value3',
        'key4': {
            'key5': 'value5'
        }
    },
    'key6': 'value6'
}

# 获取嵌套字典的键和值
result = get_nested_dict_items(nested_dict)

# 打印结果
for key, value in result:
    print(key, value)

key1 value1
key2.key3 value3
key2.key4.key5 value5
key6 value6