'Some delays are expressed in milliseconds, so we need to take that into
account and let the user define a specific delay with 1000 as multiplier
>>> d = ExactDelay(\'sleep(%s)\', mult=1000)
>>> d.get_string_for_delay( 3 )
\'sleep(3000)\''

def set_multiplier(self, mult):

    self._delay_multiplier = mult
