def getch():

        """Gets a single character from standard input.  Does not echo to the

        screen."""

        try:

                import msvcrt

                char = msvcrt.getch()

        except ImportError:

                import sys, tty, termios

                fd = sys.stdin.fileno()

                old_settings = termios.tcgetattr(fd)

                try:

                        tty.setraw(sys.stdin.fileno())

                        char = sys.stdin.read(1)

                finally:

                        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)

        return char

def userchoice(choices):

	"""Displays a prompt and a set of responses, then waits for a response

	which is checked against the responses and the first to match is 

	returned.

	choice: a List of Strings.

	choice_color: a Function taking and returning a String 

	Returns the number of the response."""

        for i in range(1, len(choices) + 1) :

                print green("\t[" + `i` + "] ") + red(choices[i - 1])

        while 1: 

                choice = getch()

                try:

                        choice = int(choice)

                except ValueError:

                        continue 

                if choice > len(choices) :

                        continue

                return choice - 1