Asking a user for input only for a limited amount of time in python [duplicate]

只谈情不闲聊 提交于 2019-12-08 13:48:38

Bit of a quick-and-dirty hack, but effective. The following waits for user input for 5 seconds or until input is received, whichever happens first.

from datetime import datetime, timedelta
import os
import signal
import threading
import time

waiting = False

def wait_and_kill(timeout):
    elapsed = timedelta(0)
    while elapsed.total_seconds() < timeout and waiting:
        start = datetime.now()
        time.sleep(0.1)
        elapsed += datetime.now() - start
    if waiting:
        os.kill(os.getpid(), signal.SIGINT)

try:
    t = threading.Thread(target=wait_and_kill, args=(5,))
    waiting = True
    t.start()
    raw = raw_input('> ')
    waiting = False
except KeyboardInterrupt:
    pass
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