def METHOD_NAME(t=None,sep="_"):
    """ Creates a timestamp that can easily be included in a filename. """
    if t is None:
        t = datetime.datetime.now()
    sargs = (t.year,t.month,t.day,t.hour,t.minute,t.second)
    sbase = "".join(["%04d",sep,"%02d",sep,"%02d",sep,"%02d",sep,"%02d",sep,"%02d"])
    return  sbase % sargs