- new import hooks in import.c, exposed in the sys module
- new module called 'zipimport'
- various changes to allow bootstrapping from zip files
I hope I didn't break the Windows build (or anything else for that
matter), but then again, it's been sitting on sf long enough...
Regarding the latest discussions on python-dev: zipimport sets
pkg.__path__ as specified in PEP 273, and likewise, sys.path item such as
/path/to/Archive.zip/subdir/ are supported again.
make the callers figure out the right tzinfo arguments to pass, instead of
making the callees guess. The code is uglier this way, but it's less
brittle (when the callee guesses, the caller can get surprised).
of the timetz case. A tzinfo method will always see a datetimetz arg,
or None, now. In the former case, it's still possible that it will get
a datetimetz argument belonging to a different timezone. That will get
fixed next.
Check for readline 2.2 features. This should make it possible to
compile readline.c again with GNU readline versions 2.0 or 2.1; this
ability was removed in readline.c rev. 2.49. Apparently the older
versions are still in widespread deployment on older Solaris
installations. With an older readline, completion behavior is subtly
different (a space is always added).
* channels() -> devices()
* stereochannels() -> stereodevices()
* recchannels() -> recdevices()
* getvol() -> get()
* setvol() -> set()
This is for (slightly) more consistency with the OSS ioctl names
(READ_DEVMASK, READ_RECMASK, READ_STEREODEVS).
Also make sure the C function names correspond more closely to the
Python method names for mixer methods.
Obtain cleaner coding and a system wide
performance boost by using the fast, pre-parsed
PyArg_Unpack function instead of PyArg_ParseTuple
function which is driven by a format string.
This can cause core dumps when Python runs. Python relies on the 754-
(and C99-) mandated default "non-stop" mode for FP exceptions. This
patch from Ben Laurie disables at least one FP exception on FreeBSD at
Python startup time.
operands have identical tzinfo members (meaning object identity -- "is").
I misunderstood the intent here, reading wrong conclusion into
conflicting clues.
be trusted with years before 1900, so now we raise ValueError if a date or
datetime or datetimetz .strftime() method is called with a year before
1900.
such that the datetime tests failed if the envar PYTHON2K was set.
This is an utter mess, and the datetime module's strftime functions
inherit it. I suspect that, regardless of the PYTHON2K setting, and
regardless of platform limitations, the datetime strftime wrappers
will end up delivering nonsense results (or bogus exceptions) for
any year before 1900. I should probably just refuse to accept years
earlier than that -- else we'll have to implement strftime() by hand.
{timetz,datetimetz}.{utcoffset,dst}() now return a timedelta (or None)
instead of an int (or None).
tzinfo.{utcoffset,dst)() can now return a timedelta (or an int, or None).
Curiously, this was much easier to do in the C implementation than in the
Python implementation (which lives in the Zope3 code tree) -- the C code
already had lots of hair to extract C ints from offset objects, and used
C ints internally.
used that.
wrap_strftime(): Removed the most irritating uses of buf.
TestDate.test_ordinal_conversions(): The C implementation is fast enough
that we can afford to check the endpoints of every year. Also added
tm_yday tests at the endpoints.
PyMapping_Check() doesn't guarantee that PyMapping_Size() won't raise
an exception, nor that keys and values are lists.
Also folded some long lines and did a little whitespace normalization.
Probably a 2.2 backport candidate.
* rename oss_t to lad_t, Ladtype to OSSType,
* rename lad_*() methods to oss_*()
* rename lad_methods list to oss_methods
Patch and impetus supplied by Nicholas FitzRoy-Dale <wzdd@lardcave.net>.
Use OSSAudioError much less frequently -- all real I/O errors (ie. any
time open(), read(), write(), ioctl(), or select() return an error)
become IOError. OSSAudioError is only used now for bad open() mode.
Added _EXPORT_INT macro to export an integer constant to Python-space.
Use it for all the AFMT_* constants, and update the list of AFMT_*
constants to match what's in Linux 2.4: add AFMT_{QUERY,IMA_ADPCM,
MPEG,AC3}. This should probably be tested with older versions of OSS,
eg. with Linux 2.2 and 2.0.
Export all SNDCTL_* ioctl numbers (where "all" is the set found in
/usr/include/linux/soundcard.h on my Debian 3.0 system -- again
Linux 2.4). Again needs to be tested with older OSS versions.
it impossible to access blocking mode!
* Rename write() to writeall(), and add a write() method that just
does one write().
* Rearrange/simplify writeall(): in particular, don't supply a timeout
to select(). Let it block forever if it has to.
* Add a bunch of simple ioctl() wrappers: nonblock(), setfmt(),
getfmts(), channels(), speed(), sync(), reset(), post(). These
wrap, respectively, SNDCTL_DSP_NONBLOCK, SNDCTL_DSP_SETFMT,
SNDCTL_DSP_GETFMTS, etc.
* Reduce flush() (which was a wrapper for the SNDCTL_DSP_SYNC ioctl) to
an alias for sync().
* Rearrange the lad_methods list to reflect the order in which the
methods are defined, and add some grouping comments.
This module is a replacement for linuxaudiodev, which will eventually
be deprecated.
Initial revision is rev 2.20 of linuxaudiodev.c, with a rewritten
header comment.
consistency with the built-in open() (and every other sane open()
function, for that matter). The two valid ways to call this open() are
now open(mode) and open(device, mode).
For backwards compatibility, retain the old open(mode) calling syntax --
this makes the error message when you call open(device) a bit confusing,
but oh well.
This is the first half of SF patch #644977.
This bug happened because: 1) the scanner_search and scanner_match methods
were not checking the buffer limits before increasing the current pointer;
and 2) SRE_SEARCH was using "if (ptr == end)" as a loop break, instead of
"if (ptr >= end)".
* Modules/_sre.c
(SRE_SEARCH): Check for "ptr >= end" to break loops, so that we don't
hang forever if a pointer passing the buffer limit is used.
(scanner_search,scanner_match): Don't increment the current pointer
if we're going to pass the buffer limit.
* Misc/NEWS
Mention the fix.
Make keyname raise ValueError if passed -1, avoiding a segfault
Make getkey() match the docs and raise an exception in nodelay mode
The return type of getch() is int, not chtype
from Greg Chapman.
* Modules/_sre.c
(lastmark_restore): New function, implementing algorithm to restore
a state to a given lastmark. In addition to the similar algorithm used
in a few places of SRE_MATCH, restore lastindex when restoring lastmark.
(SRE_MATCH): Replace lastmark inline restoring by lastmark_restore(),
function. Also include it where missing. In SRE_OP_MARK, set lastindex
only if i > lastmark.
* Lib/test/re_tests.py
* Lib/test/test_sre.py
Included regression tests for the fixed bugs.
* Misc/NEWS
Mention fixes.
On HPUX, Solaris, Tru64 (Dec UNIX), and IRIX (I think),
O_NONBLOCK is the POSIX version of non-blocking I/O
which is what we want.
On Linux and FreeBSD (at least), O_NONBLOCK and O_NDELAY are the same.
So this change should have no negative effect on those platforms.
Tested on Linux, Solaris, HPUX.
Thanks to Anders Qvist for diagnosing this problem.
XML_Parser, which happens to be a pointer type, not an XML_Parser*.
This generated warnings when compiled with Expat 1.95.5, which no
longer defines XML_Parser to be void*.
64bit, big endian (issue 2 only).
This adds a bunch of memcpy calls via a temporary variable to avoid
alignment errors. That's needed for some platforms.
the "safety" parentheses since some older compilers refuse to compile
the module then, claiming that static initializers are non-constant.
This doesn't actually make any difference for Python, since these
definitions are not used when compiling with a version of Python that
already defines the PyDoc_* macros.
-- replace then with slightly faster PyObject_Call(o,a,NULL). (The
difference is that the latter requires a to be a tuple; the former
allows other values and wraps them in a tuple if necessary; it
involves two more levels of C function calls to accomplish all that.)
[ 587993 ] SET_LINENO killer
Remove SET_LINENO. Tracing is now supported by inspecting co_lnotab.
Many sundry changes to document and adapt to this change.
value; others were inconsistent in what to name the argument or return
value; a few module-global functions had "socket." in front of their
name, against convention.
WSAEWOULDBLOCK, the second connect() attempt appears to yield WSAEISCONN
on Win98 but WSAEINVAL on Win2K. So accept either as meaning "yawn,
fine". This allows test_socket to succeed on my Win2K box (which it
already did on my Win98SE box).
setup.py (indirectly) script to build the standard dynamically loaded
modules, the errno module is being made static so it will always be
available.
Closes SF bug #591205 (needed on trunk only).
actual script to run in case we are running from an applet. If we are indeed
running an applet we skip the normal option processing leaving it all to the
applet code.
This allows us to get use the normal python binary in the Python.app bundle,
giving us all the normal command line options through PythonLauncher while
still allowing Python.app to be used as the template for building applets.
Consequently, pythonforbundle is gone, and Mac/Python/macmain.c isn't used
on OSX anymore.
us to completely decouple the framework from the executable, so we
can use a two-level namespace.
- Do framework builds with a twolevel namespace.
- Reorganized the code that creates the minimal framework in the build
directory, to make it more robust against incomplete frameworks (from
earlier aborted builds, or builds of previous Python versions).
C implementation. See SF patch 474274, by Brett Cannon.
(As an experiment, I'm adding a line that #undefs HAVE_STRPTIME,
so that you'll always get the Python version. This is so that it
gets some good exercise. We should eventually delete that line.)
- The log reader now provides a "closed" attribute similar to the
profiler.
- Both the profiler and log reader now provide a fileno() method.
- Use METH_NOARGS where possible, allowing simpler code in the method
implementations.
write_header(): When we encounter a non-string object in sys.path, record
a fairly mindless placeholder rather than dying. Possibly could record
the repr of the object found, but not clear whether that matters.
The staticforward define was needed to support certain broken C
compilers (notably SCO ODT 3.0, perhaps early AIX as well) botched the
static keyword when it was used with a forward declaration of a static
initialized structure. Standard C allows the forward declaration with
static, and we've decided to stop catering to broken C compilers. (In
fact, we expect that the compilers are all fixed eight years later.)
I'm leaving staticforward and statichere defined in object.h as
static. This is only for backwards compatibility with C extensions
that might still use it.
XXX I haven't updated the documentation.
Don't pass CREATE_NEW_CONSOLE to CreateProcess(), meaning our child process is in the same "console group" and therefore interrupted by the same Ctrl+C that interrupts the parent.
MSDN sample programs use it, apparently in error. The correct name
is WIN32_LEAN_AND_MEAN. After switching to the correct name, in two
cases more was needed because the code actually relied on things that
disappear when WIN32_LEAN_AND_MEAN is defined.
PyImport_ImportModule() is not guaranteed to return a module object.
When another type of object was returned, the PyModule_GetDict() call
return NULL and the subsequent GetItem() seg faulted.
Bug fix candidate.
mechanism is no longer evil: it no longer plays dangerous games with
the type pointer or refcounts, and objects in extension modules can play
along too without needing to edit the core first.
Rewrote all the comments to explain this, and (I hope) give clear
guidance to extension authors who do want to play along. Documented
all the functions. Added more asserts (it may no longer be evil, but
it's still dangerous <0.9 wink>). Rearranged the generated code to
make it clearer, and to tolerate either the presence or absence of a
semicolon after the macros. Rewrote _PyTrash_destroy_chain() to call
tp_dealloc directly; it was doing a Py_DECREF again, and that has all
sorts of obscure distorting effects in non-release builds (Py_DECREF
was already called on the object!). Removed Christian's little "embedded
change log" comments -- that's what checkin messages are for, and since
it was impossible to correlate the comments with the code that changed,
I found them merely distracting.
binascii_crc32(): The previous patch forced this to return the same
result across platforms. This patch deals with that, on a 64-bit box,
the *entry* value may have "unexpected" bits in the high four bytes.
Bugfix candidate.
binascii_crc32(): Make this return a signed 4-byte result across
platforms. The other way to make this platform-independent would be to
make it return an unsigned unbounded int, but the evidence suggests
other code out there treats it like a signed 4-byte int (e.g., existing
code writing the result with struct.pack "l" format).
Bugfix candidate.
This was mostly a matter of adding comments and light code rearrangement.
Upon untracking, gc_next is still set to NULL. It's a cheap way to
provoke memory faults if calling code is insane. It's also used in some
way by the trashcan mechanism.
object should now have a well-defined gc_refs value, with clear transitions
among gc_refs states. As a result, none of the visit_XYZ traversal
callbacks need to check IS_TRACKED() anymore, and those tests were removed.
(They were already looking for objects with specific gc_refs states, and
the gc_refs state of an untracked object can no longer match any other
gc_refs state by accident.)
Added more asserts.
I expect that the gc_next == NULL indicator for an untracked object is
now redundant and can also be removed, but I ran out of time for this.
in gc_refs, even at the cost of putting back a test+branch in
visit_decref.
The good news: since gc_refs became utterly tame then, it became
clear that another special value could be useful. The move_roots() and
move_root_reachable() passes have now been replaced by a single
move_unreachable() pass. Besides saving a pass over the generation, this
has a better effect: most of the time everything turns out to be
reachable, so we were breaking the generation list apart and moving it
into into the reachable list, one element at a time. Now the reachable
stuff stays in the generation list, and the unreachable stuff is moved
instead. This isn't quite as good as it sounds, since sometimes we
guess wrongly that a thing is unreachable, and have to move it back again.
Still, overall, it yields a significant (but not dramatic) boost in
collection speed.
1. You're not supposed to call this with a NULL argument, although the
docs could be clearer about that. The other visit_XYZ() functions
don't bother to check. This doesn't either now, although it does
assert non-NULL-ness now.
2. It doesn't matter whether the object is currently tracked, so don't
bother checking that either (if it isn't currently tracked, it may
have some nonsense value in gc_refs, but it doesn't hurt to
decrement gibberish, and it's cheaper to do so than to make everyone
test for trackedness).
It would be nice to get rid of the other tests on IS_TRACKED. Perhaps
trackedness should not be a matter of not being in any gc list, but
should be a matter of being in a new "untracked" gc list. This list
simply wouldn't be involved in the collection mechanism. A newly
created object would be put in the untracked list. Tracking would
simply unlink it and move it into the gen0 list. Untracking would do
the reverse. No test+branch needed then. visit_move() may be vulnerable
then, though, and I don't know how this would work with the trashcan.
"The regression" is actually due to that 2.2.1 had a bug that prevented
the regression (which isn't a regression at all) from showing up. "The
regression" is actually a glitch in cyclic gc that's been there forever.
As the generation being collected is analyzed, objects that can't be
collected (because, e.g., we find they're externally referenced, or
are in an unreachable cycle but have a __del__ method) are moved out
of the list of candidates. A tricksy scheme uses negative values of
gc_refs to mark such objects as being moved. However, the exact
negative value set at the start may become "more negative" over time
for objects not in the generation being collected, and the scheme was
checking for an exact match on the negative value originally assigned.
As a result, objects in generations older than the one being collected
could get scanned too, and yanked back into a younger generation. Doing
so doesn't lead to an error, but doesn't do any good, and can burn an
unbounded amount of time doing useless work.
A test case is simple (thanks to Kevin Jacobs for finding it!):
x = []
for i in xrange(200000):
x.append((1,))
Without the patch, this ends up scanning all of x on every gen0 collection,
scans all of x twice on every gen1 collection, and x gets yanked back into
gen1 on every gen0 collection. With the patch, once x gets to gen2, it's
never scanned again until another gen2 collection, and stays in gen2.
Bugfix candidate, although the code has changed enough that I think I'll
need to port it by hand. 2.2.1 also has a different bug that causes
bound method objects not to get tracked at all (so the test case doesn't
burn absurd amounts of time in 2.2.1, but *should* <wink>).
Setting the buffer_text attribute to true causes the parser to collect
character data, waiting as long as possible to report it to the Python
callback. This can save an enormous number of callbacks from C to
Python, which can be a substantial performance improvement.
buffer_text defaults to false.
The handlers array on each parser now has the invariant that None will
never be set as a handler; it will always be NULL or a Python-level
value passed in for the specific handler.
have_handler(): Return true if there is a Python handler for a
particular event.
get_handler_name(): Return a string object giving the name of a
particular handler. This caches the string object so it doesn't
need to be created more than once.
get_parse_result(): Helper to allow the Parse() and ParseFile()
methods to share the same logic for determining the return value
or exception state.
PyUnknownEncodingHandler(), PyModule_AddIntConstant():
Made these helpers static. (The later is only defined for older
versions of Python.)
pyxml_UpdatePairedHandlers(), pyxml_SetStartElementHandler(),
pyxml_SetEndElementHandler(), pyxml_SetStartNamespaceDeclHandler(),
pyxml_SetEndNamespaceDeclHandler(), pyxml_SetStartCdataSection(),
pyxml_SetEndCdataSection(), pyxml_SetStartDoctypeDeclHandler(),
pyxml_SetEndDoctypeDeclHandler():
Removed. These are no longer needed with Expat 1.95.x.
handler_info:
Use the setter functions provided by Expat 1.95.x instead of the
pyxml_Set*Handler() functions which have been removed.
Minor code formatting changes for consistency.
Trailing whitespace removed.
- Include a blank line between the signature line and the description
(Guido sez).
- Don't include "-> None" for API functions that always return None
because they don't have a meaningful return value.
These built-in functions are replaced by their (now callable) type:
slice()
buffer()
and these types can also be called (but have no built-in named
function named after them)
classobj (type name used to be "class")
code
function
instance
instancemethod (type name used to be "instance method")
The module "new" has been replaced with a small backward compatibility
placeholder in Python.
A large portion of the patch simply removes the new module from
various platform-specific build recipes. The following binary Mac
project files still have references to it:
Mac/Build/PythonCore.mcp
Mac/Build/PythonStandSmall.mcp
Mac/Build/PythonStandalone.mcp
[I've tweaked the code layout and the doc strings here and there, and
added a comment to types.py about StringTypes vs. basestring. --Guido]
library. Since multiple versions can be installed simultaneously, it's
crucial that you only select libraries and header files which are compatible
with each other. Version checking is done from highest version to lowest.
Building using version 1 of Berkeley DB is disabled by default because of
the hash file bugs people keep rediscovering. It can be enabled by
uncommenting a few lines in setup.py. Closes patch 553108.
that retries the connect() call in timeout mode so it can be shared
between connect() and connect_ex(), and needs only a single #ifdef.
The test for this was doing funky stuff I don't approve of,
so I removed it in favor of a simpler test. This allowed me
to implement a simpler, "purer" form of the timeout retry code.
Hopefully that's enough (if you want to be fancy, use non-blocking
mode and decode the errors yourself, like before).
- setblocking(0) and settimeout(0) are now equivalent, and ditto for
setblocking(1) and settimeout(None).
- Don't raise an exception from internal_select(); let the final call
report the error (this means you will get an EAGAIN error instead of
an ETIMEDOUT error -- I don't care).
- Move the select to inside the Py_{BEGIN,END}_ALLOW_THREADS brackets,
so other theads can run (this was a bug in the original code).
- Redid the retry logic in connect() and connect_ex() to avoid masking
errors. This probably doesn't work for Windows yet; I'll fix that
next. It may also fail on other platforms, depending on what
retrying a connect does; I need help with this.
- Get rid of the retry logic in accept(). I don't think it was needed
at all. But I may be wrong.
settimeout(). Already, settimeout() canceled non-blocking mode; now,
setblocking() also cancels the timeout. This is easier to document.
(XXX should settimeout(0) be an alias for setblocking(0)? They seem
to have roughly the same effect. Also, I'm not sure that the code in
connect() and accept() is correct in all cases. We'll sort this out
soon enough.)
not testing it -- apparently test_timeout.py doesn't test anything
useful):
In internal_select():
- The tv_usec part of the timeout for select() was calculated wrong.
- The first argument to select() was one too low.
- The sense of the direction argument to internal_select() was
inverted.
In PySocketSock_settimeout():
- The calls to internal_setblocking() were swapped.
Also, repaired some comments and fixed the test for the return value
of internal_select() in sendall -- this was in the original patch.
I've made considerable changes to Michael's code, specifically to use
the select() system call directly and to store the timeout as a C
double instead of a Python object; internally, -1.0 (or anything
negative) represents the None from the API.
I'm not 100% sure that all corner cases are covered correctly, so
please keep an eye on this. Next I'm going to try it Windows before
Tim complains.
No way is this a bugfix candidate. :-)
readline in all python versions is configured
to append a 'space' character for a successful
completion. But for almost all python expressions
'space' is not wanted (see coding conventions PEP 8).
For example if you have a function 'longfunction'
and you type 'longf<TAB>' you get 'longfunction '
as a completion. note the unwanted space at the
end.
The patch fixes this behaviour by setting readline's
append_character to '\0' which means don't append
anything. This doesn't work with readline < 2.1
(AFAIK nowadays readline2.2 is in good use).
An alternative approach would be to make the
append_character
accessable from python so that modules like
the rlcompleter.py can set it to '\0'.
[Ed.: I think expecting readline >= 2.2 is fine. If a completer wants
another character they can append that to the keyword in the list.]
[ 559250 ] more POSIX signal stuff
Adds support (and docs and tests and autoconfery) for posix signal
mask handling -- sigpending, sigprocmask and sigsuspend.
The old syntax suggested that a trailing comma was OK inside backticks,
but in fact (due to ideosyncrasies of pgen) it was not. Fix the grammar
to avoid the ambiguity. Fred: you may want to update the refman.
generations is now an array. This cleans up some code and makes it easy
to change the number of generations. Also, implemented a
gc_list_is_empty() function. This makes the logic a little clearer in
places. The performance impact of these changes should be negligible.
One functional change is that allocation/collection counters are always
zeroed at the start of a collection. This should fix SF bug #551915.
This change is too big for back-porting but the minimal patch on SF
looks good for a bugfix release.
Unicode objects are currently taken as binary data by the write()
method. This is not what Unicode users expect, nor what the
StringIO.py code does. Until somebody adds a way to specify binary or
text mode for cStringIO objects, change the format string to use "t#"
instead of "s#", so that it will request the "text buffer" version.
This will try the default encoding for Unicode objects.
This is *not* a 2.2 bugfix (since it *is* a semantic change).
Greg Ward
Jack Jansen
Tim Peters
Just van Rossum
Barry Warsaw
Martin v. Löwis
Guido van Rossum
Raymond Hettinger
Neal Norwitz
Marc-André Lemburg
Jason Tishler
Skip Montanaro
Fredrik Lundh
Walter Dörwald
Michael W. Hudson
Neil Schemenauer
Gustavo Niemeyer
Thomas Heller
Andrew M. Kuchling
Fred Drake
Mark Hammond
Sjoerd Mullender
Jeremy Hylton
Andrew MacIntyre