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import serial try: ser = serial.Serial( # set parameters, in fact use your own :-) port="COM4", baudrate=9600, bytesize=serial.SEVENBITS, parity=serial.PARITY_EVEN, stopbits=serial.STOPBITS_ONE ) ser.isOpen() # try to open port, if possible print message and proceed with 'while True:' print ("port is opened!") except IOError: # if port is already opened, close it and open it again and print ...
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