Hello, I'm not sure I understand precisely your question but maybe you can try a readline and a flushinput like that:
import serial port= 0 # or the port where you're device is connected baudrate=9600 # or the baudrate of your device s = serial.Serial(port, baudrate) # Open the port for i in range(100): s.flushInput() line= s.readline() print line -- http://mail.python.org/mailman/listinfo/python-list