python arduino usb serial example

serial.py

import serial
from time import sleep
 
usb_ports = ('/dev/ttyUSB0', '/dev/ttyUSB1')
 
while 1:
    for usb in usb_ports:
        try:
            #print('Connecting to arduino at ' + usb)
            auduino = serial.Serial(usb,  9600)
            print('Connected to arduio at ' + usb)
            while 1:
                try:
                    output = auduino.readline()
                    print(output)
                except KeyboardInterrupt:
                    exit()
                except serial.SerialException:
                    print('Lost connection. Trying to reconnect...')  
                    break
                except IOError:
                    print('IOError...')
                    pass
        except serial.SerialException:
            print('Arduino not found at ' + usb)
            pass
    sleep(10)