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New submission from Matt Joiner :
os.fstat doesn't not accept an object with the fileno() method.
Probably a bunch of other similar functions will not either.
In some parts of the standard library it's common practice to call
PyObject_AsFileDescriptor on fd-wrapping argume
Matt Joiner added the comment:
Also affects 3.3.
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New submission from Matt Joiner :
Patch attached
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components: Library (Lib)
files: dispatcher_connect_addr.patch
keywords: patch
messages: 150449
nosy: anacrolix
priority: normal
severity: normal
status: open
title: asynchronous connect in asyncore.dispatcher does not set addr
type
Matt Joiner added the comment:
I don't believe it is. dispatcher.addr is only set if the connection is
immediately established. It's set explicitly in dispatcher.__init__ if a socket
is provided that is already connected. It's *not* set after a connection
completes.
There are
Matt Joiner added the comment:
Just ran into this bug myself with 3.2. Apparently this patch works:
http://groups.google.com/group/comp.lang.python/msg/bd8818ab9d4af8d7
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Matt Joiner added the comment:
Attached a patch that fixes it, only the line numbers have changed from Martin
v. Loewis's patch. Used on 3.2.
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Added file: http://bugs.python.org/file22360/fix-root-prefix.patch
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type: behavior -> compile error
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New submission from Matt Joiner :
_ctypes.dlopen is not including the errno when it raises OSError.
This occurs when attempting to load a library that doesn't exist, the error
string given is clearly generated from an ENOENT.
joiner@dbssyd800:~$ python3 dlopen_raise.py
None
somelib.so: c
New submission from Matt Joiner :
Given there is no ! operator in Python, I next tried ~ (despite that I'm after
a logical not). This came as a surprise:
>>> bool(~True)
True
>>> bool(~False)
True
>>> bool(~~False)
False
>>> ~True, ~~True, ~Fa
New submission from Matt Joiner :
The smptlib module's __main__ doesn't flush stdout when prompting:
sys.stdout.write(prompt + ": ")
return sys.stdin.readline().strip()
stdout is usually line buffered, and so running python3 smptlib.py doesn't
actua
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Matt Joiner added the comment:
What's the status of this bug? This is a very useful feature, I've had to use
and add bindings to monotonic times for numerous applications. Can it make it
into 3.3?
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Matt Joiner added the comment:
I get this on Linux with ^D
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Matt Joiner added the comment:
Feel like a total noob: Where do I get the latest source? I can't find any
pre-release tarballs for 3.3, and the suggested py3k checkout doesn't work: $
hg clone http://hg.python.org/cpython#py3k py3k
abort: unknown revi
Matt Joiner added the comment:
This version is fixed for me:
$ ./python
Python 3.3.0a0 (default:7520f1bf0a81, Jul 18 2011, 17:12:12)
[GCC 4.1.2 20070115 (SUSE Linux)] on linux2
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New submission from Matt Joiner :
>>> a = subprocess.Popen(['cat', '/path/to/text.ini'], stdout=subprocess.PIPE,
>>> universal_newlines=True)
>>> b = configparser.ConfigParser()
>>> b.read_file(a.stdout)
Traceback (most recent call last)
New submission from Matt Joiner :
>>> from threading import *
>>> ThreadError
Traceback (most recent call last):
File "", line 1, in
NameError: name 'ThreadError' is not defined
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components: Library (Lib)
files: export-thread-error.patch
New submission from Matt Joiner :
Here's a patch that fixes it.
--
components: Library (Lib)
files: exception-in-profile.patch
keywords: patch
messages: 141591
nosy: anacrolix
priority: normal
severity: normal
status: open
title: profile does not dump stats on exception like cPr
Matt Joiner added the comment:
Should I just submit a patch for this myself? Can someone confirm the behaviour
is incorrect so I don't waste time fixing it?
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Matt Joiner added the comment:
I didn't notice there was no use of errno. It's quite possible that dlopen
might be used without the C library present, so perhaps this is why it wasn't
included. The error strings however are very C-like, which made me think of
this in the firs
Matt Joiner added the comment:
Why can't pipes.quote can't be moved to shlex.quote verbatim as I originally
proposed?
Is there justification to also change it as part of the relocation? I think any
changes to its behaviour should be a sepa
New submission from Matt Joiner :
The uuid.uuid4 function is not tested if a C system routine is not present,
despite that uuid4 has several fallback clauses. This patch will test at least
the first fallback.
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components: Library (Lib)
files: uuid4-test-no-system-routine
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Matt Joiner added the comment:
This bug is very misleading in Py3, as the TypeError makes one think that a
string is being passed rather than bytes (how else do you get a 2 argument
function call wrong?). Very difficult to determine that this is not in fact the
bug in a dynamically typed
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Matt Joiner added the comment:
I look forward to this, or something similar. Inspiration can be taken from
Golangs's select behaviour on channels.
select {
case i1 = <-c1:
print("received ", i1, " from c1\n")
case c2 <- i2:
print(&q
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Matt Joiner added the comment:
This is sorely needed. IMO the current behaviour of time.clock works for
Windows, and clock_gettime(CLOCK_MONOTONIC) on POSIX or
clock_gettime(CLOCK_MONOTONIC_RAW) on Linux>=2.6.28.
There are some related discussions on StackOverflow that may contain use
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Matt Joiner added the comment:
I agree, I discovered this function (pipes.quote) only through recommendation
here:
http://stackoverflow.com/questions/4748344/whats-the-reverse-of-shlex-split
I suggest that it be added to shlex, perhaps as shlex.quote. While the quoting
style it performs
Matt Joiner added the comment:
Two reasons: The pipes module is Unix only, but pipes.quote is useful on all
platforms. Secondly pipes.quote pertains to shell command-lines, this is also
the domain of shlex which already cross platform. In pipes, an import
shlex.quote would more than
Matt Joiner added the comment:
I notice Linux is described as not taking count=0 to mean to send until the end
of "in" is reached. Is it possible to pass (size_t)-1 to this field if None is
given, or do a loop on non-zero counts from sendfile to emulate this?
I poked around the li
Matt Joiner added the comment:
I have a few problems with these parts of the latest patch:
+ The second case may be used on Mac OS X and FreeBSD where *headers*
+ and *trailers* are arbitrary sequences of buffers that are written before
and
+ after the data from *in* is written. It
Matt Joiner added the comment:
Thanks for catching that:
Presently (Linux 2.6.9): in_fd, must correspond to a file which sup‐
ports mmap(2)-like operations (i.e., it cannot be a socket); and out_fd
must refer to a socket.
Despite the fact the manpage hasn't changed since
Matt Joiner added the comment:
Why isn't this implemented to work with __int__ as well?
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Matt Joiner added the comment:
Thanks Mark for clearing that up. I found this link to be useful in explaining
the purpose of __index__:
http://docs.python.org/release/2.5.1/whatsnew/pep-357.html
I think the choice of allowing only __index__ was the right choice
New submission from Matt Joiner :
The Format Specification Mini-Language is missing type 'i', generally the same
as 'd', and ubiquitous in the libraries from which the specification is
derived. See the 'd,i' conversion specifier in C:
http://linux.die.net/ma
Matt Joiner added the comment:
Is there any reason 'd' was chosen over 'i'? Is there a more appropriate place
I can find this out?
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New submission from Matt Joiner :
When reading from the fileobj passed in it's constructor, zipfile.ZipExtFile
passes a long into fileobj.read(). This is not normally an issue, except in
io.BytesIO, for which the source is in C, and throws TypeError for
type(bufsize) != int.
>From wh
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New submission from Matt Joiner :
I get this error when running pyright for a type of typing.ByteString. All the
implementations of ByteString (bytes, bytearray, memoryview) have the hex
method, so this seems unexpected?
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components: Library (Lib)
messages: 375523
nosy: anacrolix
Matt Joiner added the comment:
https://github.com/python/cpython/blob/48b069a003ba6c684a9ba78493fbbec5e89f10b8/Lib/_collections_abc.py#L953
https://github.com/python/cpython/blob/0e95bbf08571e98f4b688524efc2dcf20d315d91/Lib/typing.py#L1612
--
status: pending -> o
Change by Matt Joiner :
Added file: https://bugs.python.org/file49423/hex.py
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Matt Joiner added the comment:
$ pyright hex.py
stubPath /Users/anacrolix/src/dht-scraper/typings is not a valid directory.
Assuming Python platform Darwin
Searching for source files
Found 1 source file
/Users/anacrolix/src/dht-scraper/hex.py
3:9 - error: Cannot access member "hex"
Matt Joiner added the comment:
I do not think so. mypy has the same issue. The ByteString type does not
include the methods shared by all its implementations. I already linked to this
in https://bugs.python.org/msg375553. I also showed that mypy doesn't work in
my last co
New submission from Matt Joiner :
The navigation region at http://docs.python.org/dev/ should list "Other
versions" instead of "Old versions" as the in development docs are also
available here.
Docs for other versions
Python 2.7 (stable)
Python 3.2 (stable)
Old
New submission from Matt Joiner :
Frequently when profiling multiple threads, I need to combine several dump stat
files. Currently -m pstats reads the profiling data at only the first path
given. It should merge all the profiling data from all the paths given.
$ python3.3 -m pstats prof/5506
Changes by Matt Joiner :
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resolution: works for me ->
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New submission from Matt Joiner :
_io._IOBase.readline doesn't seem to like _io.FileIO.read returning None, which
occurs when it's unbuffered and nonblocking. (Modules/_io/fileio.c:745 in
trunk). Can this be handled some other way?
$ python3.3
Python 3.3.0a0 (default:fb0f4fe8123
Matt Joiner added the comment:
The patches only fix write? What about read?
http://bugs.python.org/issue13858
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New submission from Matt Joiner :
There's a lingering StandardError referenced in the logging module.
StandardError was removed in Python 3, and execution across this code path
generates a NameError:
File "/home/matt/src/cpython/Lib/logging/__init__.py", line 291, in __in
Matt Joiner added the comment:
Interesting this also occurs in 3.2 and 2.7, but not 2.6 or 3.1. It's probably
not an error in 2.x tho.
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Matt Joiner added the comment:
Cheers, thanks for the fast turn around.
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New submission from Matt Joiner :
socket.socket.detach doesn't mark the socket._closed flag. The flag is specific
to the Python wrapper, so the fix is put there. Test included.
--
components: Library (Lib)
files: socket-detach-mark-closed.patch
keywords: patch
messages: 152005
New submission from Matt Joiner :
_threading.RLock is optional, and threading._CRLock is set to None if it isn't
available. If this happens, the test_threading unittests crash.
Some implementations don't provide _thread.RLock.
Patch attached.
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f
Matt Joiner added the comment:
Please also expose sched_getcpu().
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New submission from Matt Joiner :
There is no Barrier in multiprocessing corresponding to threading.Barrier.
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nosy: anacrolix
priority: normal
severity: normal
status: open
title: Implement multiprocessing.Barrier
type: enhancement
versions
New submission from Matt Joiner :
>From the mailing list, there is some interest in a CSP-style channel.
>http://mail.python.org/pipermail/python-ideas/2012-February/014073.html
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components: Library (Lib)
messages: 153748
nosy: anacrolix
priority: normal
severity: normal
status
Matt Joiner added the comment:
As I see it, here are the desirable features of CSP-style concurrency as it
pertains to channels:
1) At least an unbuffered mode
2) Can be marked closed
3) Block on multiple send/receives until one can proceed
Specifically features 1 and 2 could be bolted onto
Matt Joiner added the comment:
Can we get this exposed as an os.accept4, and an optional flags parameter to
socket.socket.accept?
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New submission from Matt Joiner :
If an argument of '-' is handled by argparse.FileType, it defaults to
sys.stdin. However a mode of 'rb' is ignored, the returned file object does not
work with raw bytes.
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components: Library (Lib)
messages: 154612
nosy: anacro
Matt Joiner added the comment:
Roger that. I'll start on a patch for this in a month or two if all goes well.
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Matt Joiner added the comment:
Jim the code was lifted verbatim from Lib/cProfile.py, line 47.
That code in cProfile.py has not changed since 2006 when it was committed by
Armin Rigo.
I can modernize it if it's a requirement to get it committed, but I'm also okay
with my conserva
New submission from Matt Joiner :
set.add can return True to indicate a newly added item to the set, or False if
the item was already present.
The C function PySet_Add returns -1 on error, and 0 on success currently. This
is extended to return 1 if the item is newly added, and 0 if it was
Changes by Matt Joiner :
Added file: http://bugs.python.org/file24863/bench_set_add.py
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Matt Joiner added the comment:
Yes it should.
A cursory glance shows that __repr__ returns incorrect if _closed is not
marked, and an unnecessary mop-up call to socket.close is avoided.
--
nosy: +giampaolo.rodola, haypo, stutzbach
___
Python
Matt Joiner added the comment:
I should mention that this failure to set addr is unusual seeing as most socket
instances are wrapping AF_INET* domain sockets, and aren't likely to connect
without blocking. This is quite likely a reason nobody has observed it until
now.
It *is* desirab
Matt Joiner added the comment:
Steven, patch attached. I lost steam in the unittests with all the meta,
suffice it that the names match the file descriptors of the stream sources.
i.e. FileType('rb') would give a file with name=0, and so forth. My chosen
method also allows other
Matt Joiner added the comment:
Is there still some value to at least exposing this in the C API, per the
precedents I mentioned?
The patch also contains some adjustment to the set_add_entry/set_add_key
abstraction dance, and some future proofing of PySet_Add return values that
have merit
New submission from Matt Joiner :
$ python3.3 -m unittest test.test_queue
Generates errors in the unit test code of the form
AttributeError: 'BaseQueueTest' object has no attribute 'type2test'
--
components: Tests
messages: 156006
nosy: anacrolix, benjamin.
Matt Joiner added the comment:
This changeset has broken something. All I get is a confusing backtrace ending
with:
File "/home/matt/src/python-torrent/torrent/bencode.py", line 15, in encode
yield from encode(k)
AttributeError: 'list_iterator' object has no attri
Matt Joiner added the comment:
Yes, FWIW much of the standard library tests are callable this way without
issue. I have patches that fix the discoverability of a few test modules. I'll
submit these in another issue.
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Matt Joiner added the comment:
I will submit a patch for this soon.
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Matt Joiner added the comment:
Doc/library/dis.rst wasn't updated for the extra pop introduced to MAKE_CLOSURE
opcode.
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New submission from Matt Joiner :
functools.lru_cache is optimized to the point that it may benefit from a C
implementation.
--
components: Interpreter Core, Library (Lib)
messages: 156405
nosy: anacrolix, rhettinger
priority: normal
severity: normal
status: open
title: C
Changes by Matt Joiner :
Added file: http://bugs.python.org/file24958/functools.lru_cache-in-c
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Added file: http://bugs.python.org/file24961/profiler-unhandled-exceptions.patch
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Matt Joiner added the comment:
This patch is a shoo-in, can someone review and commit this?
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Matt Joiner added the comment:
I attached a minimal patch that additionally tidies the exception handling for
{cP,p}rofile.runctx.
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Matt Joiner added the comment:
Updated patch to fix a crash if maxsize isn't given, and add a unit test for
that.
Possible issues:
* I've tried to emulate object() by calling PyBaseObject_Type. Not sure if
there's a more lightweight object for this that just provides the n
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Matt Joiner added the comment:
I've attached a patch that implements the descriptor protocol for
functools.partial with minimum changes.
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Added file: http://bugs.python.org/file25016/functools.partial-descrget.patch
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New submission from Matt Joiner :
There's a race condition in concurrent.futures in _AllCompletedWaiter, which
affects wait(return_when=ALL_COMPLETED).
The attached test will go into an infinite wait.
--
components: Library (Lib)
files: concurrent.futures._AllCompletedWaiter
Matt Joiner added the comment:
Patch attached.
--
keywords: +patch
Added file:
http://bugs.python.org/file25020/concurrent.futures._AllCompletedWaiter-race-condition.patch
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Changes by Matt Joiner :
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New submission from Matt Joiner :
matt@matt-1005P:~/src/cpython$ ./python -m unittest test.test_concurrent_futures
Ran 79 tests in 62.554s
FAILED (errors=18)
Failures are due to test discovery picking up unintentionally exposed tests. By
adhering to the test_cases protocol introduced in 3.2
Changes by Matt Joiner :
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New submission from Matt Joiner :
Python 3.2 added the test_cases protocol. Many of the stdlib tests won't run
using the `$ python3 -m unittest test.test_blah` method due to select unit test
class names, and some regrtest arcanity. Defining test_cases makes these tests
work as expecte
Matt Joiner added the comment:
I've fixed the commenting, and cache_info use.
I've left the element management in pure C as it reduces memory use (56 bytes
for 4 element list, vs. 16 for lru_cache_elem), and avoids ref counting
overhead (3 refs per link, plus GC). The difference mi
Changes by Matt Joiner :
Removed file: http://bugs.python.org/file24958/functools.lru_cache-in-c
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Matt Joiner added the comment:
I think if you can correctly construct the same test case list using discovery
then that's far superior. But I haven't tried this, and don't know if you can
correctly predicate the support classes using only c
Matt Joiner added the comment:
Michael:
The thread setup and cleanup is not required, AFAICT. You are also correct in
that these particular test modules do not run correctly without modification
(although test_queue does now that the bug I reported there was fixed).
Sorry by predicated, I
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