import sys
import serial

port = raw_input("Which port? > ")
baud = int(raw_input("What baud? > "))

try:
    port = serial.Serial(port, baud, timeout=0)
except SerialException:
    print "Couldn't open port, quitting."
    sys.exit(1)
except:
    print "An error occurred, quitting."
    sys.exit(2)

while True:
    if port.inWaiting() > 0:
        sys.stdout.write( str(ord( port.read(1) )) )