"Ajith Gopinath" <qbits...@gmail.com> wrote
how do we represent left arrow key in a python program?
Can anybody help?

That depends entirely on your terminal/environment.
If you are using a Unix terminal it will be diffeent to using a Mac or a PC.

You can write a program to display the key code of any key using curses on *nix or msvcrt on Windows. Here is an example from my web tutor under the Event Driven Programming topic...

import msvcrt

def doKeyEvent(key):
   if key == '\x00' or key == '\xe0': # non ASCII
      key = msvcrt.getch() # fetch second character
   print ord(key),

def doQuitEvent(key):
   raise SystemExit


# First, clear the screen of clutter then warn the user # of what to do to quit
lines = 25 # set to number of lines in console
for line in range(lines): print

print "Hit space to end..."
print

# Now mainloop runs "forever"
while True:
  ky = msvcrt.getch()
  length = len(ky)
  if length != 0:
     # send events to event handling functions
     if ky == " ": # check for quit event
        doQuitEvent(ky)
else: doKeyEvent(ky)
HTH,


--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/

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