# -*- Mode: Python; tab-width: 4 -*-

# newpotato.py
#
# a script for testing the coroutine module, based on Sam's demo potato.py
#
# With a previous version (1.11) of the coroutine module, this script would
# dump core if given a number
# larger or equal to 4. Now, "python newpotato.py 10000 | head"
# will cause a "Broken Pipe Error", although "python newpotato.py 10000"
# works fine. - martinb 2000/04/23

import coroutine
import sys

def hot_potato_1 (n):
	global co2
	while 1:
		print "co1: n is", n
		if type(n) != type(1):
			n = n[0]
			print "co1: using", n
		if n == 0:
			coroutine.main ('done')
		else:
			args = ((n-1, 0,),)
			n = coroutine.resume (co2, args)

def hot_potato_2 (n):
	global co1
	while 1:
		print "co2: n is", n
		if type(n) != type(1):
			n = n[0]
			print "co2: using", n
		if n == 0:
			coroutine.main ('done')
		else:
			args = (n-1,)
			n = coroutine.resume (co1, args)

co1 = coroutine.new (hot_potato_1)
co2 = coroutine.new (hot_potato_2)

print coroutine.resume (co1, (int(sys.argv[1]),))