def iso_now():
 now = datetime.datetime.now()
 return ('%s.%06d' % (now.strftime('%Y%m%d.%H%M%S'), now.microsecond))

def iso_now ( ) : now = datetime . datetime . now ( ) return ( '%s.%06d' % ( now . strftime ( '%Y%m%d.%H%M%S' ) , now . microsecond ) )
return the current time as yymmdd .