尝试根据用户输入从嵌套字典中获取特定值

def get_value_from_nested_dict(nested_dict, keys):
    """
    从嵌套字典中获取特定值

    :param nested_dict: 嵌套字典
    :param keys: 键的列表，表示要获取值的路径
    :return: 找到的值或None（如果路径不存在）
    """
    if not keys:
        return nested_dict

    current_key = keys[0]
    if current_key in nested_dict:
        if len(keys) == 1:
            return nested_dict[current_key]
        else:
            return get_value_from_nested_dict(nested_dict[current_key], keys[1:])
    else:
        return None

# 示例嵌套字典
example_dict = {
    "a": {
        "b": {
            "c": 42
        }
    }
}

# 示例用法
keys_to_find = ["a", "b", "c"]
value = get_value_from_nested_dict(example_dict, keys_to_find)
print(f"找到的值: {value}")  # 输出: 找到的值: 42

def get_value_from_nested_dict(nested_dict, keys):
    if not keys:
        return nested_dict

    current_key = keys[0]
    if current_key in nested_dict:
        if len(keys) == 1:
            return nested_dict[current_key]
        else:
            return get_value_from_nested_dict(nested_dict[current_key], keys[1:])
    else:
        raise KeyError(f"键 '{current_key}' 不存在")

try:
    value = get_value_from_nested_dict(example_dict, ["a", "b", "d"])
except KeyError as e:
    print(f"错误: {e}")  # 输出: 错误: 键 'd' 不存在