目录怎么查看序列号：连接代码：conn_tool.py怎么查看序列号：机器屏幕中：设置，设备和序列号，序列号，里面有序列号连接代码：conn_tool.py可以获取打印进度。import time import bambulabs_api as bl class BambuPrinter: def __init__(self, ip, access_code, serial): self.ip = ip self.access_code = access_code self.serial = serial self.printer = None self.is_connected = False def get_print_progress(self