A few errnos from OSX are missing in the eponymous module.

--- 8< ---
#ifdef EAUTH
    inscode(d, ds, de, "EAUTH", EAUTH, "Authentication error");
#endif
#ifdef EBADARCH
    inscode(d, ds, de, "EBADARCH", EBADARCH, "Bad CPU type in executable");
#endif
#ifdef EBADEXEC
    inscode(d, ds, de, "EBADEXEC", EBADEXEC, "Bad executable (or shared library)");
#endif
#ifdef EBADMACHO
    inscode(d, ds, de, "EBADMACHO", EBADMACHO, "Malformed Mach-o file");
#endif
#ifdef EBADRPC
    inscode(d, ds, de, "EBADRPC", EBADRPC, "RPC struct is bad");
#endif
#ifdef ECANCELED
    inscode(d, ds, de, "ECANCELED", ECANCELED, "Operation canceled");
#endif
#ifdef EDEVERR
    inscode(d, ds, de, "EDEVERR", EDEVERR, "Device error");
#endif
#ifdef EFTYPE
    inscode(d, ds, de, "EFTYPE", EFTYPE, "Inappropriate file type or format");
#endif
#ifdef ENEEDAUTH
    inscode(d, ds, de, "ENEEDAUTH", ENEEDAUTH, "Need authenticator");
#endif
#ifdef ENOATTR
    inscode(d, ds, de, "ENOATTR", ENOATTR, "Attribute not found");
#endif
#ifdef ENOPOLICY
    inscode(d, ds, de, "ENOPOLICY", ENOPOLICY, "Policy not found");
#endif
#ifdef ENOTSUP
    inscode(d, ds, de, "ENOTSUP", ENOTSUP, "Operation not supported");
#endif
#ifdef EPROCLIM
    inscode(d, ds, de, "EPROCLIM", EPROCLIM, "Too many processes");
#endif
#ifdef EPROCUNAVAIL
    inscode(d, ds, de, "EPROCUNAVAIL", EPROCUNAVAIL, "Bad procedure for program");
#endif
#ifdef EPROGMISMATCH
    inscode(d, ds, de, "EPROGMISMATCH", EPROGMISMATCH, "Program version wrong");
#endif
#ifdef EPROGUNAVAIL
    inscode(d, ds, de, "EPROGUNAVAIL", EPROGUNAVAIL, "RPC prog. not avail");
#endif
#ifdef EPWROFF
    inscode(d, ds, de, "EPWROFF", EPWROFF, "Device power is off");
#endif
#ifdef ERPCMISMATCH
    inscode(d, ds, de, "ERPCMISMATCH", ERPCMISMATCH, "RPC version wrong");
#endif
#ifdef ESHLIBVERS
    inscode(d, ds, de, "ESHLIBVERS", ESHLIBVERS, "Shared library version mismatch");
#endif
--- >8 ---

(PS: catched by scripting around https://github.com/pcarrier/stuff/blob/master/sys/errnos.c if someone wants to play with other "exotic" architectures)

This shell-fragment lists which names in /usr/include/sys/errno don't exist in errnomodule.h:

$ grep '#define[      ]*E' /usr/include/sys/errno.h  | 
    awk '{ print $2 }' | grep -v '^ELAST$' | 
    while read name; do 
        grep -q $name Modules/errnomodule.c || echo $name; 
    done | sort

The following names in your list are already part in errnomodule.h:

* ECANCELED
* ENOTSUP

The patch looks fine otherwise. I'm currently rebuilding python3.3 and will commit the patch if everything works properly.

And the patch works properly, with the patch applied (except for the two names I mentioned earlier):


$ DYLD_FRAMEWORK_PATH=$PWD ./python.exe
Python 3.3a0 (default:5fa92a47016c+, May  7 2011, 09:36:44) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import errno
>>> errno.EAUTH
80
>>> errno.ECANCELED
89
>>> errno.ENOTSUP
45
>>> errno.EPROGMISMATCH
75
>>>

New changeset 2f978b4c02ad by Ronald Oussoren in branch 'default':
Closes Issue 11916: Add a number of MacOSX specific definitions to the errno module.
http://hg.python.org/cpython/rev/2f978b4c02ad