Python pygame.midi error portmidi -

i use debian 8 version of python pygame when try ear midi clicking got :

une erreur est survenue la lecture de ce film exige un greffon décodeur audio/x-midi-event qui n'est pas installé. 

but can ear :

aplay monfichier.mid 

if try run prog python/pygame know example find on web im sure works :

import pygame import time import pygame.midi  pygame.midi.init() player= pygame.midi.output(0) player.set_instrument(48,1)  major=[0,4,7,12]  def go(note):     player.note_on(note, 127,1)     time.sleep(1)     player.note_off(note,127,1)  def arp(base,ints):     n in ints:         go(base+n)  def chord(base, ints):     player.note_on(base,127,1)     player.note_on(base+ints[1],127,1)     player.note_on(base+ints[2],127,1)     player.note_on(base+ints[3],127,1)     time.sleep(1)     player.note_off(base,127,1)     player.note_off(base+ints[1],127,1)     player.note_off(base+ints[2],127,1)     player.note_off(base+ints[3],127,1) def end():        pygame.quit() 

i have:

python3 pygameex.py  exception ignored in: <pypm.output object @ 0xb6514e30> traceback (most recent call last):   file "pypm.pyx", line 306, in pypm.output.__dealloc__ (src/pypm.c:1438) exception: b"portmidi: `bad pointer'" 

i tried python 2.7 , python 3 same error looked on web , found same question without answers

i want make notes , chords without passing files i'm looking python module cannot find happyness

in case experience same issue, happens when forget close midi resources @ end of program :

 import pygame.midi import time  pygame.midi.init()  midiout = pygame.midi.output(0) midiout.note_on(64,127) time.sleep(0.5) midiout.note_off(64,127)  midiout.close()