Linux平台下端口名称格式为/dev/ttyUSB could not open port

[Tonymaxs]

Linux平台下端口名称格式为/dev/ttyUSB + 编号, 示例如下: 下了： arm = WlkataMirobot(portname='/dev/ttyUSB0') Exception： Traceback (most recent call last): File "/home/tonyhsiao/wlkata-mirobot-python-main/wlkata_mirobot/wlkata_mirobot_serial.py", line 162, in open self.serialport.open() File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 325, in open raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg)) serial.serialutil.SerialException: [Errno 2] could not open port : [Errno 2] No such file or directory: ''

只下arm = WlkataMirobot()能正常運行。