Traceback (most recent call last): File "E:\Duzhuan\anaconda\lib\site-packages\IPython\core\interactiveshell.py", line 3460, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-2-f50cabd6c39d>", line 1, in <module> runfile('C:\\Users\\zhangxiao\\Desktop\\Algorithm Integration\\d.py', wdir='C:\\Users\\zhangxiao\\Desktop\\Algorithm Integration') File "E:\Duzhuan\JetBrainsPyCharm 2023.1\PyCharm 2023.1\plugins\python\helpers\pydev\_pydev_bundle\pydev_umd.py", line 198, in runfile pydev_imports.execfile(filename, global_vars, local_vars) # execute the script File "E:\Duzhuan\JetBrainsPyCharm 2023.1\PyCharm 2023.1\plugins\python\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile exec(compile(contents+"\n", file, 'exec'), glob, loc) File "C:\Users\zhangxiao\Desktop\Algorithm Integration\d.py", line 144, in <module> main() File "C:\Users\zhangxiao\Desktop\Algorithm Integration\d.py", line 136, in main localization_error = calculate_localization_error(sensor_nodes) NameError: name 'calculate_localization_error' is not defined

非常抱歉，之前的回答中遗漏了定义 `calculate_localization_error` 函数的部分。请将以下代码添加到你的实现中以定义该函数：

def calculate_localization_error(sensor_nodes):
    total_error = 0
    unknown_count = 0

    for node in sensor_nodes:
        if node.node_type == "unknown":
            total_error += math.sqrt((node.x - node.true_x)**2 + (node.y - node.true_y)**2)
            unknown_count += 1

    if unknown_count > 0:
        average_error = total_error / unknown_count
        return average_error
    else:
        return None

在上述代码中，我们定义了 `calculate_localization_error` 函数，用于计算节点的定位误差。我们遍历传感器节点列表 `sensor_nodes`，对于类型为 "unknown" 的节点，计算其实际位置 `(true_x, true_y)` 和估计位置 `(x, y)` 之间的欧几里得距离，并将所有节点的误差累加起来。最后，根据未知节点的数量计算平均误差，并返回该值。

请将上述代码添加到你的实现中，并再次运行。如果还有其他问题，请随时提问。非常抱歉给你带来的困扰！