STINNER Victor <victor.stin...@haypocalc.com> added the comment: > > There are differents examples: > > - LONG_MAX is 9223372036854775807 even on 32 bits system > > - On Mac OS X, FAT programs contains 32 and 64 binaries, whereas > > constants are changed for 32 or 64 bits > > That's because the h2py.py script doesn't know anything about conditional > definitions, e.g. > > PTRDIFF_MIN = (-9223372036854775807-1) > PTRDIFF_MAX = (9223372036854775807) > PTRDIFF_MIN = (-2147483647-1) > PTRDIFF_MAX = (2147483647)
Why may fix h2py.py, but regenerating plat-*/*.py files on build is not an option according to Martin (msg145659). And it doesn't solve the Mac OS X issue. > Not all constants are really useful because of this, but some are, e.g. > INT16_MAX, INT32_MAX, etc. INT16_MAX and INT32_MAX are not platform dependent. I'm not sure that Python should provide such constants. > Right, the modules are not tested at all, AFAIK. One more reason to remove them. By the way, there are not documented. > > The Python socket modules contain many constants (SOCK_*, AF_*, SO_*, > > ...): http://docs.python.org/library/socket.html#socket.AF_UNIX > > True, but you probably agree that it's easier to parse a header file > into a Python module than to add each and every socket option on > the planet to the C socket module, don't you ? :-) It's not exactly the purpose of this issue. We are first trying to get correct constants. I don't think that it's really useful to expose all constants. I prefer to expose more constants on demand. When we add new constants, we try to use it, test it and document it (e.g. O_CLOEXEC). > > Which constants are used by the ctypes modules or can be used by modules > > using ctypes? Can you give examples? I listed usages of plat-* modules > > in the first message of my thread on python-dev. > > Not constants used by the ctypes, but constants which can be used > with the ctypes module. Sorry, I don't see which constants are useful with the ctypes module? > > By "ldd", you mean "ld.so" (dlopen)? > > Yes. See my issue #13226 for these constants. > Also note that the plat-* directories can contain platform specific code, > e.g. the OS2 dirs have replacements for the pwd and grp modules. (OS/2 has been deprecated in Python 3.3, see the PEP 11.) Except plat-os2emx, I don't see other platform specific code. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue12619> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
