A small example of a Python command line non blocking input

  With Google, we basically used select to implement non-blocking listening, but the problem is that after using select to listen is not like getchar(), immediately received a single character of the input, must wait for the return.

      After trying not to Google... [well, Google. Nothing can be done without Google.]

      Finally, a large number of English data into the surface, put together the following available code, to achieve a single character non - blocking input.

      Show the code below.

#!/usr/bin/python
# -*- coding: utf-8 -*-
""" python non blocking input
"""
__author__ = 'Zagfai'
__version__=  '2013-09-13'
import sys
import select
from time import sleep
import termios
import tty
old_settings = termios.tcgetattr(sys.stdin)
tty.setcbreak(sys.stdin.fileno())
while True:
    sleep(.001)
    if select.select([sys.stdin], [], [], 0) == ([sys.stdin], [], []):
        c = sys.stdin.read(1)
        if c == 'x1b': break
        sys.stdout.write(c)
        sys.stdout.flush()
termios.tcsetattr(sys.stdin, termios.TCSADRAIN, old_settings)
print raw_input('123:')

Two modules, termios and tty, are used to control the input mode of tty, changing from line input to single character.

      The END.