one shot continuation, sorta, using python greenlets

gistfile1.py

#!/usr/bin/env python

from greenlet import greenlet

def test1(coro):
    print 'test1: 1'
    coro_self = greenlet.getcurrent()
    coro.switch(coro_self)
    raise Exception('Hey you cant do this!')

def test2(coro):
    print 'test2: 1'
    coro_self = greenlet.getcurrent()
    coro.switch(coro_self)
    print 'test2: 2'

gr1 = greenlet(test1)
gr2 = greenlet(test2)
gr1.switch(gr2)