keyboard-interrupt.py

#!/usr/bin/env python
"""Demonstrate that Ctrl-C (twice) interrupts a Python script with subprocess."""
import sys
from subprocess import Popen, PIPE

p = Popen([sys.executable or "python", "-uc", """
import time
n = int(input())
for i in range(n):
    print("{:0{}d}".format(i, len(str(n))))
    time.sleep(1)
                           """], stdin=PIPE)
try:
    p.communicate("300")
except KeyboardInterrupt:
    print("got sigint")