hoo.py

#!/usr/bin/env python
from subprocess import call
import time
ho = 'h'

def ooer():
    while True:
        for i in range(6):
            yield 'o'
        yield '-o'

oo = ooer()
while True:
    ho += oo.next()
    print ho
    call(['say', ho])
    time.sleep(1)