I am trying to control a CD-ROM drive using python. The code I use is
shown below.

My issue is that I need to be able to eject the CDROM tray even if there
is no disk inside.

This is possible because other programs (like the linux "eject" command)
can do it. Its just a question of how it is done in python. So I'm
posting here in the hope someone can tell me.

Thanks,

import os, sys
if 'win' in sys.platform:
    # untested: found in old mailing list post:
    # http://mail.python.org/pipermail/python-win32/2002-November/000593.html
    import win32file
    from win32con import *
    drive = 'D:'
    win32file.CreateFile(r'\\.\\' + drive, GENERIC_READ,
FILE_SHARE_READ,
                         None, OPEN_EXISTING, 0, 0)
    # IOCTL_STORAGE_EJECT_MEDIA = 0x002d4808 from <winioctl.h>
    win32file.DeviceIoControl(h, 0x002d4808, "", 0)
    win32file.CloseHandle(h)
else: # does this work on OSX and BSD?
    import fcntl
    cd_device  = '/dev/cdrom'
    if os.path.islink(cd_device):
        base_path = os.path.dirname(cd_device)
        cd_device = os.readlink(cd_device)
        if not cd_device[0] == '/':
            cd_device = os.path.join(base_path, cd_device)
    cdrom = os.open(cd_device, os.O_RDONLY | os.O_NONBLOCK)
    # CDROMEJECT = 0x5309 from <linux/cdrom.h> on linux 2.6
    fcntl.ioctl(cdrom, 0x5309, 0)
    os.close(cdrom)

NB: If you're using pygame, you can also just use it's builtin
commands:

import pygame.cdrom as cdrom
cdrom.init()
cd = cdrom.CD(0) # 0 = first cdrom device
cd.init()
cd.eject()
cd.quit()
cdrom.quit()