gistfile1.txt

import pibrella, sys, time

morse_table = {
         '.-':           'A',
         '-...':         'B',
         '-.-.':         'C',
         '-..':          'D',
         '.':            'E',
         '..-.':         'F',
         '--.':          'G',
         '....':         'H',
         '..':           'I',
         '.---':         'J',
         '-.-':          'K',
         '.-..':         'L',
         '--':           'M',
         '-.':           'N',
         '---':          'O',
         '.--.':         'P',
         '--.-':         'Q',
         '.-.':          'R',
         '...':          'S',
         '-':            'T',
         '..-':          'U',
         '...-':         'V',
         '.--':          'W',
         '-..-':         'X',
         '-.--':         'Y',
         '--..':         'Z',
         '-----':        '0',
         '.----':        '1',
         '..---':        '2',
         '...--':        '3',
         '....-':        '4',
         '.....':        '5',
         '-....':        '6',
         '--...':        '7',
         '---..':        '8',
         '----.':        '9',
         '--..--':       ',',
         '.-.-.-':       '.',
         '..--..':       '?',
         '-.-.-.':       ';',
         '---...':       ':',
         '.----.':       "'",
         '-....-':       '-',
         '-..-.':        '/',
         '-.--.-':       '(',
         '-.--.-':       ')',
         '..--.-':       '_'
}

def input_message_string(pin):
    global pressed
    global message_string
    global released
    global character
    if pin.read() == 1:
        if character == ".......":
            exit()
        pressed = time.time()
        if released != 0:
            if (pressed - released) > 1.0:
                message_string+=" ("+morse_table[character]+") "
                character=""
        pibrella.light.on()
        #pibrella.buzzer.buzz(440)
    else:
        pibrella.light.off()
        #pibrella.buzzer.stop()
        released=time.time()
        if (released - pressed) < 0.3:
            message_string+="."
            character+="."
        else:
            message_string+="-"
            character+="-"
pibrella.button.changed(input_message_string)

pressed=0
released=0
message_string=""
character=""
while True:
    print '\r', message_string,
    sys.stdout.flush()

At pibrella.button.changed(input_message_string) I get a syntax error, could you be of any help?