import resource
import ossaudiodev
import os


# increase RLIMIT_NOFILE above FD_SETSIZE (usually 1024)
s, h = resource.getrlimit(resource.RLIMIT_NOFILE)
nofile = 10 * s
try:
    resource.setrlimit(resource.RLIMIT_NOFILE, (nofile, nofile))
except ValueError:
    print('cannot increase RLIMIT_NOFILE')
    nofile = s

print('RLIMIT_NOFILE: %d' % nofile)

# open RLIMIT_NOFILE-<guard> FDs
for i in range(nofile - 5):
    os.dup(1)
 
odev = ossaudiodev.open('/dev/dsp', 'w')
print('OSS device fileno: %d' % odev.fileno())
odev.writeall(b'toto')