gevent nonblocking stdin

gistfile1.py

import os
import sys
import fcntl
import gevent
from gevent.socket import wait_read


def print_every(s, repeat=1):
    print s
    if repeat:
        gevent.spawn_later(repeat, print_every, s, repeat)


def echo_stdin():
    fcntl.fcntl(sys.stdin, fcntl.F_SETFL, os.O_NONBLOCK)
    while True:
        wait_read(sys.stdin.fileno())
        l = sys.stdin.readline()
        print l
        if l == 'quit':
            break


print_every('printing every second')

gevent.spawn(echo_stdin).join()