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#!/usr/bin/env pythonimport serialusbport = '/dev/ttyUSB0'# Set up serial baud rateser = serial.Serial(usbport, 9600, timeout=1)calcbit = lambda val: int("".join(map(str, map(int, val))), 2)def send_message(message):    ser.write(chr(2))    for item in message:        ser.write(chr(item))        picture_1 = [[1,1,1,1,1,1,1,1],             [1,0,0,1,1,0,0,1],             [1,0,1,1,1,1,0,1],             [1,1,0,1,1,0,1,1],             [1,0,0,1,1,0,0,1],             [1,0,0,1,1,0,0,1],             [1,1,1,1,1,1,1,1]]def send_matrix(matrix_num, picture):    print repr([matrix_num] + [calcbit(row) for row in picture])    print repr(map(chr, [matrix_num] + [calcbit(row) for row in picture]))    send_message([matrix_num] + [calcbit(row) for row in picture])if __name__ == "__main__":    send_matrix(1, picture_1)