import serial import serial.tools.list_ports ports = serial.tools.list_ports.comports() serialInst = serial.Serial() portList = [] for onePort in ports: portList.append(str(onePort)) print(str(onePort)) serialInst.baudrate = 9600 serialInst.port = "COM3" serialInst.open() while True: packet = serialInst.readline() # packet=packet.decode('utf') packet=packet.decode('utf').split(",") # packet.pop(0) print(packet)