serial-monitor.py

#!/usr/bin/python

import serial
import time

ser = serial.Serial(
    port = '/dev/ttyACM0',\
    baudrate = 9600,\
    parity = serial.PARITY_NONE,\
    stopbits = serial.STOPBITS_ONE,\
    bytesize = serial.EIGHTBITS,\
    timeout = 0)

print("Monitoring %s ..." % ser.portstr)

while True:
    line = ser.readline()
    if not line:
        break

    t = time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime())
    print("[%s] %s" % (t, line.rstrip()))

ser.close()