how to stop a loop with ESC key? [newbie]

[Leif K-Brooks]

mo wrote:
> Can somebody explain how to stop a WHILE loop in running program by pressing
> ESC key?

On Unix-like systems try:

import termios, fcntl, sys, os
fd = sys.stdin.fileno()

oldterm = termios.tcgetattr(fd)
newattr = termios.tcgetattr(fd)
newattr[3] = newattr[3] & ~termios.ICANON & ~termios.ECHO
termios.tcsetattr(fd, termios.TCSANOW, newattr)

oldflags = fcntl.fcntl(fd, fcntl.F_GETFL)
fcntl.fcntl(fd, fcntl.F_SETFL, oldflags | os.O_NONBLOCK)

i = 0
try:
    while 1:
        print i
        i += 1
        try:
            char = sys.stdin.read(1)
            if char == '\x1b':
                print "Bye!"
                break
        except IOError:
            pass
finally:
    termios.tcsetattr(fd, termios.TCSAFLUSH, oldterm)
    fcntl.fcntl(fd, fcntl.F_SETFL, oldflags)