python - Trouble with pyserial on cygwin -


i have written program in python script requirement take input makey-makey keyboard w-a-s-d-f-g.

i able input device, facing difficulty in cygwin.

there try except block handle case when device not connected.

problem in cygwin try except block not getting read.

i understand port in cygwin not available, , also, device listed file.

what problem , how overcome this:

here's code:

#python program capture # makey makey input # program read device connected # , based on keys connected # print approrpriate messages  import os,sys import serial  plat = sys.platform.lower()  if plat == 'win32': #for windows operating system      com_port = 'com2'     print com_port  elif plat == 'cygwin': # cygwin      com_port = '/dev/ttys1'  print "attempting open com port..."  try:      # check device com number     ser = serial.serial(com_port, 9600, timeout = 10)        print "successfully opened com port."     print "your com port returned following information:n"  except serial.serialutil.serialexception:       print("kindly connect usb device")     sys.exit(-1)      print "listening key presses..."  try:     msvcrt import getch     print "i here"  except importerror:      print "hi"     def getch():          print "i here!"          import sys, tty, termios                      fd = sys.stdin.fileno()         old_settings = termios.tcgetattr(fd)          try:             tty.setraw(fd)             ch = sys.stdin.read(1)         finally:             termios.tcsetattr(fd, termios.tcsadrain, old_settings)         return ch    def getchs():      while true:         yield getch()   choice in getchs():            if choice == 'w':             print (80 * '-')             print ("you have chosen orange...")             print ("here's nutritional fact of orange:")             print ("'one medium orange contains 1.23 grams of protein, 62 calories , 3.1 grams of dietary fiber.'")             print (80 * '-')          elif choice == 'a':             print (80 * '-')             print ("you have chosen banana...")             print ("here's nutritional fact of banana:")             print ( "'one medium banana contains 1.29 grams of protein, 105 calories , 3.1 grams of dietary fiber")             print (80 * '-')          elif choice == 's':             print (80 * '-')             print ("you have chosen apple...")             print ("here's nutritional fact of apple:")             print ("'one medium apple skin contains 0.47 grams of protein, 95 calories, , 4.4 grams of dietary fiber.'")             print (80 * '-')           elif choice == ' ':             print "see chump!"             break  ser.close()

and here output in windows , cygwin windows output when device not connected

cygwin output when device not connected

thanks


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