如何在嵌套字典中在新行中打印每个较小字典

def print_nested_dict(nested_dict):
    for key, value in nested_dict.items():
        print(key)
        for sub_key, sub_value in value.items():
            print(sub_key, sub_value)
        print()  # 打印空行分隔每个较小字典

# 示例嵌套字典
nested_dict = {
    'dict1': {'key1': 'value1', 'key2': 'value2'},
    'dict2': {'key3': 'value3', 'key4': 'value4'}
}

print_nested_dict(nested_dict)

dict1
key1 value1
key2 value2

dict2
key3 value3
key4 value4