[issue38148] Add slots to asyncio transports

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Note, slots for protocols are provided by 3.8 already.

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[issue38148] Add slots to asyncio transports

[Andrew Svetlov]

Change by Andrew Svetlov :


--
keywords: +patch
pull_requests: +15699
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16077

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[issue38148] Add slots to asyncio transports

[Andrew Svetlov]

New submission from Andrew Svetlov :

Transports are abstract interfaces.
Adding slots allows using slots in transport implementations as well.
If the implementation doesn't use slots -- everything keeps working.

Slots can help with saving a memory footprint a little.

--
components: asyncio
messages: 352239
nosy: asvetlov, yselivanov
priority: normal
severity: normal
status: open
title: Add slots to asyncio transports
versions: Python 3.8, Python 3.9

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[issue38107] Replace direct future and task contructor calls with factories in asyncio tests

[Andrew Svetlov]

Change by Andrew Svetlov :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue35810] Object Initialization does not incref Heap-allocated Types

[Christian Heimes]

Change by Christian Heimes :


--
pull_requests: +15698
pull_request: https://github.com/python/cpython/pull/16071

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[issue38140] Py_tp_dictoffset / Py_tp_finalize are unsettable in stable API

[Eddie Elizondo]

Change by Eddie Elizondo :


--
keywords: +patch
pull_requests: +15697
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16076

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[issue30701] Exception parsing certain invalid email address headers

[Tim Bell]

Tim Bell  added the comment:

This appears to be the same issue as subsequently reported in #34155.

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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Gregory P. Smith  added the comment:

AIX has the same error as RHEL and Fedora

https://buildbot.python.org/all/#/builders/161/builds/1615/steps/5/logs/stdio

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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Change by Gregory P. Smith :


--
versions: +Python 3.9 -Python 3.8

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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Gregory P. Smith  added the comment:

and some Fedora and RHEL bots are failing with:

==
ERROR: test_extra_groups (test.test_subprocess.POSIXProcessTestCase)
--
Traceback (most recent call last):
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/test/test_subprocess.py",
 line 1840, in test_extra_groups
output = subprocess.check_output(
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 419, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 497, in run
with Popen(*popenargs, **kwargs) as process:
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 889, in __init__
gids.append(grp.getgrnam(extra_group).gr_gid)
KeyError: "getgrnam(): name not found: 'nogroup'"
==
ERROR: test_group (test.test_subprocess.POSIXProcessTestCase) (group='nogroup')
--
Traceback (most recent call last):
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/test/test_subprocess.py",
 line 1800, in test_group
output = subprocess.check_output(
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 419, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 497, in run
with Popen(*popenargs, **kwargs) as process:
  File 
"/home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Lib/subprocess.py",
 line 862, in __init__
gid = grp.getgrnam(group).gr_gid
KeyError: "getgrnam(): name not found: 'nogroup'"

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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Gregory P. Smith  added the comment:

The 'Debian root' buildbot exposed a unittest issue to deal with:

https://buildbot.python.org/all/#/builders/27/builds/3702/steps/5/logs/stdio

==
ERROR: test_user (test.test_subprocess.POSIXProcessTestCase) (user=65534)
--
Traceback (most recent call last):
  File 
"/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/test_subprocess.py", 
line 1761, in test_user
output = subprocess.check_output(
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 419, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 497, in run
with Popen(*popenargs, **kwargs) as process:
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 941, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 1797, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: 
'/root/buildarea/3.x.angelico-debian-amd64/build/python'
==
ERROR: test_user (test.test_subprocess.POSIXProcessTestCase) (user='nobody')
--
Traceback (most recent call last):
  File 
"/root/buildarea/3.x.angelico-debian-amd64/build/Lib/test/test_subprocess.py", 
line 1761, in test_user
output = subprocess.check_output(
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 419, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 497, in run
with Popen(*popenargs, **kwargs) as process:
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 941, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
  File "/root/buildarea/3.x.angelico-debian-amd64/build/Lib/subprocess.py", 
line 1797, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: 
'/root/buildarea/3.x.angelico-debian-amd64/build/python'

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[issue38128] IDLE undo calls get_saved() when set to None

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Here's one more:

Traceback (most recent call last):
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/tkinter/__init__.py",
 line 1883, in __call__
return self.func(*args)
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/idlelib/multicall.py",
 line 176, in handler
r = l[i](event)
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/idlelib/filelist.py",
 line 54, in close_all_callback
reply = edit.close()
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/idlelib/editor.py",
 line 1079, in close
self._close()
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/idlelib/pyshell.py",
 line 312, in _close
EditorWindow._close(self)
  File 
"/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/idlelib/editor.py",
 line 1083, in _close
if self.io.filename:
AttributeError: 'NoneType' object has no attribute 'filename'

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[issue36046] support dropping privileges when running subprocesses

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Thanks for working on this.  Least privilege is an important security 
consideration.  The world will be a better place if we limit harm from bad or 
broken actors.

--
nosy: +rhettinger

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[issue38105] hash collision when hash(x) == -2 causes many calls to __eq__

[Tim Peters]

Tim Peters  added the comment:

Following up, at least under Visual Studio for x86 "it's free" to change the 
code to add in `perturb` shifted left.  The C source:

perturb >>= PERTURB_SHIFT;
i = (i*5 + (perturb << 1) + 1) & mask;

compiles to this, where I added comments relating the instructions to the 
source code:

lea rax,[r14+r14*4]  # rax = i*5
shr r12,5# r12(perturb) >>= 5
lea r14,[r12*2+1]# r14(i) = (perturb << 1) + 1
add r14,rax  # r14(i) += i*5
and r14,rbx  # r14(i) &= mask

Good job!  There are actually fewer machine instructions than C operators.

As noted, this change would eliminate the possibility of fixed points from the 
start, so would eliminate the symptoms in this specific bug report.

Which I don't much care about ;-)  But I _do_ care about that, in general, the 
early stages of collision resolution for small tables can "frequently" visit 
slots more than once.  This is true even if the hashes aren't identical.  And 
it would remain true even with the change (cycles can still exist - that there 
are no fixed points just means there are no more cycles of the minimum possible 
length 1).

Improving that is worth some effort, but not much.  In general, hash codes 
aren't identical, and in small tables redundant slot visits just cost the time 
to read the hash code from cache and re-deduce that it's not equal to what 
we're looking for (__eq__ isn't typically called).

In larger tables redundant slot visits in the early stages are too rare to care 
about.

In small tables, it's worth something to guarantee that the first probe after a 
collision can't hit exactly the same slot again (in a random model, there's a 
12.5% chance of that happening now in the smallest tables - 12.5% is 1 in 8 - 
and this bug report contrived cases where the chance is 100% across a dozen 
iterations).

Anyone up a for a world of tedious benchmarking? ;-)

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[issue9216] FIPS support for hashlib

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 7cad53e6b084435a220e6604010f1fa5778bd0b1 by Gregory P. Smith 
(Christian Heimes) in branch 'master':
bpo-9216: Add usedforsecurity to hashlib constructors (GH-16044)
https://github.com/python/cpython/commit/7cad53e6b084435a220e6604010f1fa5778bd0b1


--
nosy: +gregory.p.smith

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[issue34155] [CVE-2019-16056] email.utils.parseaddr mistakenly parse an email

[Roberto C . Sánchez]

Roberto C. Sánchez  added the comment:

I am working on Debian LTS support.  I have submitted a PR that contains the 
necessary adjustments to implement the fix in 2.7.

--
nosy: +rcsanchez97

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[issue38105] hash collision when hash(x) == -2 causes many calls to __eq__

[Tim Peters]

Tim Peters  added the comment:

A more principled change would be to replace instances of this:

i = (i*5 + perturb + 1) & mask;

with this:

i = (i*5 + (perturb << 1) + 1) & mask;

The latter spelling has no fixed points.  That's easy to see:  `(perturb << 1) 
+ 1` is necessarily odd, and then `i*5 + ODD` is even when `i` is odd, and vice 
versa.

I had hoped that the time for a new shift could overlap with the multiply 
latency, but no such luck.  At least Visual Studio didn't multiply to begin 
with:  it first computes `i*4 + perturb` cheaply with a single LEA instruction, 
then adds 1 (INC), then adds in `i` again.

I expect it would be able to fold in a "free" shifted add of perturb with 
another LEA, so the latter spelling isn't necessarily more expensive.  But I'm 
generally loathe to increase operation counts relying on clever compilers to 
exploit processor-specific tricks.

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[issue37455] asyncio.run() error related to finalizing async generators

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> AsyncGenerator breaks when not iterated fully with 
RuntimeError("can't send non-None value to a just-started coroutine")

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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[Raymond Hettinger]

Change by Raymond Hettinger :


--
stage: patch review -> resolved
status: open -> closed

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[issue38147] add macro for __builtin_unreachable

[Sergey Fedoseev]

New submission from Sergey Fedoseev :

GCC (along with Clang and ICC) has __builtin_unreachable() and MSVC has 
__assume() builtins, that can be used to optimize out unreachable conditions.

So we could add macro like this:

#ifdef Py_DEBUG
#   define Py_ASSUME(cond) (assert(cond))
#else
#   if defined(_MSC_VER)
#   define Py_ASSUME(cond) (__assume(cond))
#   elif defined(__GNUC__)
#   define Py_ASSUME(cond) (cond? (void)0: __builtin_unreachable())
#   else
#   define Py_ASSUME(cond) ((void)0);
#   endif
#endif

Here's a pair of really simple examples showing how it can optimize code: 
https://godbolt.org/z/g9LYXF.

Real world example. _PyLong_Copy() [1] calls _PyLong_New() [2]. _PyLong_New() 
checks the size, so that overflow does not occur. This check is redundant when 
_PyLong_New() is called from _PyLong_Copy(). We could add a function that 
bypass that check, but in LTO build PyObject_MALLOC() is inlined into 
_PyLong_New() and it also checks the size. Adding Py_ASSUME((size_t)size <= 
MAX_LONG_DIGITS) allows to bypass both checks. 

[1] 
https://github.com/python/cpython/blob/3a4f66707e824ef3a8384827590ebaa6ca463dc0/Objects/longobject.c#L287-L309
[2] 
https://github.com/python/cpython/blob/3a4f66707e824ef3a8384827590ebaa6ca463dc0/Objects/longobject.c#L264-L283

--
messages: 352228
nosy: sir-sigurd
priority: normal
severity: normal
status: open
title: add macro for __builtin_unreachable

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[issue38146] QVariant NULL returns anomalous values in equality statements

[John Midgett]

New submission from John Midgett :

Per PEP 8, equality comparisons to None should use the "is" or "is not" 
keywords. However, if x is a {QVariant}NULL, the equality statement with the 
"is" keyword returns FALSE whereas the "==" comparison returns TRUE.  

Hence where cond = {QVariant}NULL:

if cond is None  # Returns False
if cond == None  # Returns True

This can cause some unexpected code anomalies (as it did for me) when adjusting 
code for PEP 8 compliance.

--
components: Interpreter Core
messages: 352227
nosy: John Midgett
priority: normal
severity: normal
status: open
title: QVariant NULL returns anomalous values in equality statements
type: behavior
versions: Python 3.6

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[issue38141] Use fewer statics in Argument Clinic.

[Serhiy Storchaka]

Serhiy Storchaka  added the comment:

Dropping "static" will hit performance. _PyArg_Parser is used at first place 
because it can cache some data between calls. If drop static, you should drop 
also _PyArg_Parser and return to old slow arguments parsing.

--
nosy: +serhiy.storchaka

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[issue38143] plistlib: cleanup PEP8 violations

[Julien Palard]

Julien Palard  added the comment:

Hi Jon, thanks for trying to enhance Python.

You should start by reading the devguide [1]. We'd like to enhance the style 
and may or may not do it in the future, but if we do I'll be all in the single 
conmit, and I bet using black. We do not accept such small changes because they 
mess with got history (blame mainly).

[1]: https://devguide.python.org

Excuse my short message, sent from my phone.

--
nosy: +mdk
resolution:  -> later
stage: patch review -> resolved
status: open -> closed

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[issue38144] Add the root_dir and dir_fd parameters in glob.glob()

[Serhiy Storchaka]

Change by Serhiy Storchaka :


--
keywords: +patch
pull_requests: +15696
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16075

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[issue38145] Fix short option 'd' in 'distutils' command 'bdist_dumb'

[sinoroc]

Change by sinoroc :


--
title: Fix short option 'd' in 'scommand 'bdist_dumb' -> Fix short option 'd' 
in 'distutils' command 'bdist_dumb'

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[issue38145] Fix short option 'd' in 'scommand 'bdist_dumb'

[sinoroc]

New submission from sinoroc :

In the 'distutils' command 'bdist_dumb', the short option 'd' is used
for both the 'bdist-dir' and 'dist-dir' options.

The bdist-dir option appeared first on 2000-05-13 in commit:
ba0506b

The dist-dir option appeared then on 2000-07-05 in commit:
c4eb84a

There appears to have been no version released between these two
commits, so most likely the global behaviour of the command has
stayed consistent.

The short option d actually triggers the dist-dir option, not the
bdist-dir option.

It is therefore safe to change the short option for bdist-dir. A
choice consistent with other similar distutils commands is 'b'.

--
components: Distutils
messages: 352224
nosy: dstufft, eric.araujo, sinoroc
priority: normal
pull_requests: 15695
severity: normal
status: open
title: Fix short option 'd' in 'scommand 'bdist_dumb'
versions: Python 2.7, Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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[issue38144] Add the root_dir and dir_fd parameters in glob.glob()

[Serhiy Storchaka]

New submission from Serhiy Storchaka :

The pattern for the glob() function can be relative and absolute. If it is 
relative, paths are searched from the current directory. If you want to search 
them in other directory, you need either change the current directory (which 
affects other parts of your program) or pass a concatenation of the escaped 
root directory and a pattern:

   glob.glob(os.path.join(glob.escape(root_dir), pattern))

Most code (even in the stdlib and tools) forget to escape the root directory. 
It works only until it does not contain metacharacters ('*?[').

When you need paths relative to the root directory, you need to "remove" the 
root_dir prefix from results (using os.path.relpath() at best).

The proposed PR adds two new parameters in glob.glob() and glob.iglob(): 
root_dir and dir_fd.

root_dir specifies the root directory for relative pattern. Its effect is the 
same as chdir before calling glob(). It is similar to the root_dir parameter of 
shutil.make_archive. For example, you can add py-files in the specified 
directory to the ZIP archive by:

with zipfile.ZipFile(archive, 'w') as zf:
for filename in glob.glob('**/*.py', recursive=True, root_dir=root_dir):
zf.write(os.path.join(root_dir, filename), arcname=filename)

Adding to archive and copying are simpler if you have paths relative to the 
specified directory.

The dir_fd parameter is similar to root_dir, but it specifies the root 
directory as an open directory descriptor instead of a path (as in many os 
functions). It adds security (nobody can rename and replace the root directory 
in process) and performance (because of shorter paths).

root_dir and dir_fd can be combined. root_dir is relative to dir_fd and the 
pattern is relative to root_dir.

If root_dir is absolute, dir_fd is ignored. If the pattern is absolute, 
root_dir and dir_fd are ignored.

--
components: Library (Lib)
messages: 352223
nosy: serhiy.storchaka
priority: normal
severity: normal
status: open
title: Add the root_dir and dir_fd parameters in glob.glob()
type: enhancement
versions: Python 3.9

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[issue37455] asyncio.run() error related to finalizing async generators

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Yes, please close as a duplicate.

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[issue38143] plistlib: cleanup PEP8 violations

[Jon Janzen]

Change by Jon Janzen :


--
keywords: +patch
pull_requests: +15694
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16074

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[issue38143] plistlib: cleanup PEP8 violations

[Jon Janzen]

New submission from Jon Janzen :

There are a series of PEP8 violations in plistlib.

Most of them are spacing issues, a few naming issues, and also some unused 
function parameters and unused imports that can be done away with.

--
components: Library (Lib)
messages: 352221
nosy: bigfootjon, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: plistlib: cleanup PEP8 violations
type: enhancement
versions: Python 3.9

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[issue38133] py.exe cannot locate Store package

[miss-islington]

miss-islington  added the comment:


New changeset 664d56a52eb5b98ac24b2d0cd4a080ffd49fd93d by Miss Islington (bot) 
in branch '3.8':
bpo-38133: Allow py.exe launcher to locate installations from the Microsoft 
Store (GH-16025)
https://github.com/python/cpython/commit/664d56a52eb5b98ac24b2d0cd4a080ffd49fd93d


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[issue37967] Beta GPG signature check failing

[Trishank Kuppusamy]

Trishank Kuppusamy  added the comment:

The problem with not authoritatively publishing one or more public keys for the 
Python tarballs is that no one will know for sure which key to trust. If you 
naively download the public key associated with a malicious tarball, you would 
trust it w/o realizing that it's malicious (assuming that the tarball 
developers themselves have not gone rogue).

I strongly urge the Python developers to use at least one official GPG key to 
sign all tarballs, and publish that on its web site (perhaps indirectly using 
Keybase).

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[issue38133] py.exe cannot locate Store package

[Steve Dower]

Change by Steve Dower :


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[issue38133] py.exe cannot locate Store package

[miss-islington]

Change by miss-islington :


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[issue38133] py.exe cannot locate Store package

[Steve Dower]

Steve Dower  added the comment:


New changeset ed93a8852d120c5a3606720edc723bf5aa6a1fc2 by Steve Dower in branch 
'master':
bpo-38133: Allow py.exe launcher to locate installations from the Microsoft 
Store (GH-16025)
https://github.com/python/cpython/commit/ed93a8852d120c5a3606720edc723bf5aa6a1fc2


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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Gregory P. Smith  added the comment:

I'm curious to see what weird things the various buildbot platforms find for 
this one.  crossing my fingers.

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[issue36046] support dropping privileges when running subprocesses

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 2b2ead74382513d0bb9ef34504e283a71e6a706f by Gregory P. Smith 
(Patrick McLean) in branch 'master':
bpo-36046: Add user and group parameters to subprocess (GH-11950)
https://github.com/python/cpython/commit/2b2ead74382513d0bb9ef34504e283a71e6a706f


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[issue38142] Make _hashlib extension module PEP-384 compatible

[Christian Heimes]

Change by Christian Heimes :


--
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pull_request: https://github.com/python/cpython/pull/16071

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[issue37455] asyncio.run() error related to finalizing async generators

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

I think this would be fixed by issue38013. Andrew I feel these are the same 
issues here and can be closed.

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[issue38013] AsyncGenerator breaks when not iterated fully with RuntimeError("can't send non-None value to a just-started coroutine")

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan :


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[issue38142] Make _hashlib extension module PEP-384 compatible

[Christian Heimes]

New submission from Christian Heimes :

Updated _hashopenssl.c to be PEP 384 compliant.

--
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components: Extension Modules
messages: 352214
nosy: christian.heimes
priority: normal
severity: normal
status: open
title: Make _hashlib extension module PEP-384 compatible
type: enhancement
versions: Python 3.9

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[issue38013] AsyncGenerator breaks when not iterated fully with RuntimeError("can't send non-None value to a just-started coroutine")

[Andrew Svetlov]

Change by Andrew Svetlov :


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[issue5396] os.read not handling O_DIRECT flag

[Paul]

Paul  added the comment:

Michael,

I ran into the same issue as you.  I got it to work by changing the mmap size 
to 8K.

d = os.open(disk_file_path, os.O_RDWR | os.O_DIRECT | os.O_SYNC | os.O_DSYNC)
readbuf = mmap.mmap(-1, 8192)
os.lseek(d, 0, os.SEEK_SET)
fo = os.fdopen(d, 'rb')
fo.readinto(readbuf)

Should work.  What's strange is that further multiples of 4K seem to work OK.

readbuf = mmap.mmap(-1, 4096 * 3)

Also works... So what's going on with 4K?

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[issue29988] with statements are not ensuring that __exit__ is called if __enter__ succeeds

[Mark Shannon]

Mark Shannon  added the comment:

I expect to fix this is as part of the general improvements I am making to the 
bytecode, interpreter and compiler.
So it should be fixed for 3.9 but not for 3.8

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[issue17013] Allow waiting on a mock

[Mario Corchero]

Mario Corchero  added the comment:

Spoke offline with @xtreak, I'll be sending a PR for this to take over the 
existing one.

@lisroach proposed a new name, EventMock to differentiate it from any awaitable 
async notation.

@michael.foord suggested using `mock_timeout` as the argument.

Discussed also to change the naming of the method to `await_until_any_call` to 
make the semantics similar to the one that `Mock` provides. As 
`await_until_called_with` might mislead the user that it applies only to the 
last call.

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[issue37760] Refactor makeunicodedata.py: dedupe parsing, use dataclass

[STINNER Victor]

Change by STINNER Victor :


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[issue37803] "python -m pdb --help" does not work

[miss-islington]

miss-islington  added the comment:


New changeset 21bfff9a5a766acfbdd899687850f563893a0f9e by Miss Islington (bot) 
in branch '3.8':
closes bpo-37803: pdb: fix handling of options (--help / --version) (GH-15193)
https://github.com/python/cpython/commit/21bfff9a5a766acfbdd899687850f563893a0f9e


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[issue37803] "python -m pdb --help" does not work

[miss-islington]

miss-islington  added the comment:


New changeset 7da8c0aee2039685f3eff878610684f94f7f7873 by Miss Islington (bot) 
in branch '3.7':
closes bpo-37803: pdb: fix handling of options (--help / --version) (GH-15193)
https://github.com/python/cpython/commit/7da8c0aee2039685f3eff878610684f94f7f7873


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[issue36876] Global C variables are a problem.

[Eric Snow]

Eric Snow  added the comment:


New changeset 088b63ea7a8331a3e34bc93c3b873c60354b4fad by Eric Snow in branch 
'master':
bpo-36876: Fix the globals checker tool. (gh-16058)
https://github.com/python/cpython/commit/088b63ea7a8331a3e34bc93c3b873c60354b4fad


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[issue37908] Add an example of ArgumentParser.exit()

[Stéphane Wirtel]

Stéphane Wirtel  added the comment:

Thank you

--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.8, Python 3.9

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[issue38105] hash collision when hash(x) == -2 causes many calls to __eq__

[Tim Peters]

Tim Peters  added the comment:

Something that may be slightly worth pursuing:  in

j = (5*j + 1) % 2**power

to get a full-period sequence hitting every integer in range(2**power) exactly 
once, the multiplier (5) is a bit delicate (it has to be congruent to 1 mod 4), 
but the addend (1) only needs to be odd.  When the hash code has a long string 
of high-order 1 bits, the lower bits of `perturb` are all ones repeatedly 
across iterations, and a string of `power` one bits is congruent to -1 mod 
2**power, cancelling out the +1.

Which people stumbled into here:  all negative ints with small absolute value 
_do_ have a long string of high-order 1 bits (as did also my contrived 2**60 - 
2).

If we changed the addend to, say, +3 instead, it would still be possible to 
contrive cases as bad, but you'd be unlikely to stumble into them by accident, 
and they would be sensitive to the value of `power` (the table's current size). 
 For example, for a table size of 8 (the smallest we use), only ints ending 
with bits 101 are congruent to -3 mod 8.  So maximally "bad" hash codes would 
be of the form (bits, where "x" is "doesn't matter", and grouped into chunks of 
PERTURB_SHIFT (5) bits from the right):

... xx101 xx101 ... xx101 xx101 x
 
Provided changing +1 to +3 didn't slow anything down (you never know until you 
try!), that would be fine by me.  But I'm not bothered by the current behavior, 
so I won't be pursuing it.

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[issue37803] "python -m pdb --help" does not work

[miss-islington]

Change by miss-islington :


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[issue37803] "python -m pdb --help" does not work

[miss-islington]

Change by miss-islington :


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pull_request: https://github.com/python/cpython/pull/16066

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[issue37803] "python -m pdb --help" does not work

[Benjamin Peterson]

Benjamin Peterson  added the comment:


New changeset 855df7f273c3988c72f01e51ba57091887ec38b2 by Benjamin Peterson 
(Daniel Hahler) in branch 'master':
closes bpo-37803: pdb: fix handling of options (--help / --version) (GH-15193)
https://github.com/python/cpython/commit/855df7f273c3988c72f01e51ba57091887ec38b2


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stage: patch review -> resolved
status: open -> closed

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[issue37908] Add an example of ArgumentParser.exit()

[miss-islington]

miss-islington  added the comment:


New changeset 6dc3e61c511d3e13ce4eac86c8b6abdff58e3617 by Miss Islington (bot) 
in branch '3.8':
bpo-37908: Add an example of ArgumentParser.exit() (GH-15455)
https://github.com/python/cpython/commit/6dc3e61c511d3e13ce4eac86c8b6abdff58e3617


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[issue38121] Synchronize importlib.metadata with importlib_metadata 0.22

[Jason R. Coombs]

Change by Jason R. Coombs :


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[issue38121] Synchronize importlib.metadata with importlib_metadata 0.22

[Jason R. Coombs]

Jason R. Coombs  added the comment:


New changeset a0d4aac50b362f4c33594a86e0e299d3f812e7b1 by Jason R. Coombs in 
branch '3.8':
[3.8] bpo-38121: Sync importlib.metadata with 0.22 backport (GH-15993) 
(GH-16064)
https://github.com/python/cpython/commit/a0d4aac50b362f4c33594a86e0e299d3f812e7b1


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[issue37908] Add an example of ArgumentParser.exit()

[Stéphane Wirtel]

Stéphane Wirtel  added the comment:


New changeset b1a2abdb06408ffc4f13d6ff50351ad49c99afc0 by Stéphane Wirtel (Hai 
Shi) in branch 'master':
bpo-37908: Add an example of ArgumentParser.exit() (GH-15455)
https://github.com/python/cpython/commit/b1a2abdb06408ffc4f13d6ff50351ad49c99afc0


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[issue37908] Add an example of ArgumentParser.exit()

[miss-islington]

Change by miss-islington :


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[issue34709] Suggestion: make getpass.getuser() also look at SUDO_USER environment variable

[Gregory P. Smith]

Gregory P. Smith  added the comment:

Adding a check for SUDO_USER would break existing uses as it would no longer be 
reporting the user the process is running as.

--
assignee:  -> gregory.p.smith
resolution:  -> rejected
stage: patch review -> resolved
status: open -> closed
title: Suggestion: make getuser.getpass() also look at SUDO_USER environment 
variable -> Suggestion: make getpass.getuser() also look at SUDO_USER 
environment variable

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[issue21872] LZMA library sometimes fails to decompress a file

[Gregory P. Smith]

Gregory P. Smith  added the comment:

thanks!

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status: open -> closed

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[issue29988] with statements are not ensuring that __exit__ is called if __enter__ succeeds

[Gregory P. Smith]

Gregory P. Smith  added the comment:

While there is technically still time, it'd take people spending dedicated time 
on it before the 3.8 release.  I won't be.

Important?  Sure.  But not urgent; this bug is not new.  We've lived with it 
for many releases already.  I believe it has been around since 2.5 when with 
statements were introduced.

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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[Raymond Hettinger]

Raymond Hettinger  added the comment:


New changeset d04c85f5a74e61637ee17e8d4870c6a1d3b07d3e by Raymond Hettinger 
(Miss Islington (bot)) in branch '3.8':
bpo-38096:  Complete the "structseq" and "named tuple" cleanup (GH-16010) 
(GH-16062)
https://github.com/python/cpython/commit/d04c85f5a74e61637ee17e8d4870c6a1d3b07d3e


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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[Raymond Hettinger]

Raymond Hettinger  added the comment:


New changeset e3c25fc902eedcd5c593fac58f35645961f55bf4 by Raymond Hettinger 
(Miss Islington (bot)) in branch '3.7':
bpo-38096:  Complete the "structseq" and "named tuple" cleanup (GH-16010) 
(GH-16063)
https://github.com/python/cpython/commit/e3c25fc902eedcd5c593fac58f35645961f55bf4


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[issue17013] Allow waiting on a mock

[Lisa Roach]

Change by Lisa Roach :


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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Paul, no worries.  Welcome to the team.

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[issue38121] Synchronize importlib.metadata with importlib_metadata 0.22

[Jason R. Coombs]

Change by Jason R. Coombs :


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[issue38141] Use fewer statics in Argument Clinic.

[Larry Hastings]

Change by Larry Hastings :


--
title: Use less statics in Argument Clinic. -> Use fewer statics in Argument 
Clinic.

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[issue38123] Unable to find Python3.8.0b4 on Ubuntu 19004 desktop

[Jonathan Gossage]

Jonathan Gossage  added the comment:

I now do not think that it is a Python problem. It only appears when Ubuntu
18.04 is upgraded to 19.04 by the upgrade process. The problem does not
show up on a fresh install of Ubuntu 19.04 followed by a source install of
Python 3.8.0b4 only if the install is preceded by a software upgrade of
Ubuntu.

On Thu, Sep 12, 2019 at 5:12 AM Zachary Ware  wrote:

>
> Zachary Ware  added the comment:
>
> If calling /usr/local/bin/python3.8 directly works as expected, there's
> nothing for us to do here so I'm going to go ahead and close the issue.
> Please reopen if you can demonstrate a real bug in the installation code,
> though!
>
> --
> nosy: +zach.ware
> resolution:  -> not a bug
> stage:  -> resolved
> status: open -> closed
>
> ___
> Python tracker 
> 
> ___
>

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[issue37935] Improve performance of pathlib.scandir()

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 98a4a713d001cf2dfb04a9e318e4aea899bc8fbd by Gregory P. Smith 
(Miss Islington (bot)) in branch '3.8':
bpo-37935: Added tests for os.walk(), glob.iglob() and Path.glob() (GH-15956) 
(GH-16043)
https://github.com/python/cpython/commit/98a4a713d001cf2dfb04a9e318e4aea899bc8fbd


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[issue38141] Use less statics in Argument Clinic.

[Eric Snow]

New submission from Eric Snow :

(This is a sub-task of bpo-36876, "Global C variables are a problem.".)

Currently Argument Clinic generates "_PyArg_Parser _parser" as a static 
variable.  Dropping "static" solves the problem of thread safety (e.g. for 
subinterpreters not sharing the GIL).

--
assignee: eric.snow
components: Argument Clinic
messages: 352193
nosy: eric.snow, larry
priority: normal
severity: normal
stage: needs patch
status: open
title: Use less statics in Argument Clinic.
versions: Python 3.9

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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[miss-islington]

Change by miss-islington :


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[issue37488] Document the "gotcha" behaviors in utcnow() and utcfromtimestamp()

[Paul Ganssle]

Paul Ganssle  added the comment:

Thanks Joannah!

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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[miss-islington]

Change by miss-islington :


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pull_request: https://github.com/python/cpython/pull/16062

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[issue38096] Clean up the "struct sequence" / "named tuple" docs

[Raymond Hettinger]

Raymond Hettinger  added the comment:


New changeset 4210ad5ebd5769f585035e022876e161cd0e9a3e by Raymond Hettinger in 
branch 'master':
bpo-38096:  Complete the "structseq" and "named tuple" cleanup (GH-16010)
https://github.com/python/cpython/commit/4210ad5ebd5769f585035e022876e161cd0e9a3e


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[issue38137] hashopenssl fails to compile on MacOS

[miss-islington]

miss-islington  added the comment:


New changeset 36c29e444d6bc0e31b46509610d3fb7cff74f2c2 by Miss Islington (bot) 
(Stéphane Wirtel) in branch '3.8':
[3.8] bpo-38137: Re-add OpenSSL 1.0.2 compat (GH-16051) (GH-16057)
https://github.com/python/cpython/commit/36c29e444d6bc0e31b46509610d3fb7cff74f2c2


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[issue37488] Document the "gotcha" behaviors in utcnow() and utcfromtimestamp()

[miss-islington]

miss-islington  added the comment:


New changeset 307c5fe9428b175ff3871a1fdc19bdd7562cfee5 by Miss Islington (bot) 
in branch '3.8':
bpo-37488 : Document a warning for datetime.utcnow() and utcfromtimestamp() 
(GH-15773)
https://github.com/python/cpython/commit/307c5fe9428b175ff3871a1fdc19bdd7562cfee5


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[issue33312] ubsan undefined behavior sanitizer flags struct _dictkeysobject (PyDictKeysObj)

[Ned Deily]

Ned Deily  added the comment:

This issue does not seem to me to be a security issue so would not meet the 
criteria for backporting to 3.6.

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[issue38013] AsyncGenerator breaks when not iterated fully with RuntimeError("can't send non-None value to a just-started coroutine")

[Andrew Svetlov]

Change by Andrew Svetlov :


--
keywords: +patch
pull_requests: +15684
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16061

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[issue38138] test_importlib is leaking references

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado :


--
title: test_importleak is leaking references -> test_importlib is leaking 
references

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[issue38108] Everything in Mock should inherit from Base

[Lisa Roach]

Change by Lisa Roach :


--
keywords: +patch
pull_requests: +15683
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/16060

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[issue37488] Document the "gotcha" behaviors in utcnow() and utcfromtimestamp()

[miss-islington]

Change by miss-islington :


--
pull_requests: +15682
pull_request: https://github.com/python/cpython/pull/16059

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[issue16690] Reference leak with custom tp_dealloc in PyType_FromSpec

[Petr Viktorin]

Petr Viktorin  added the comment:

This is fixed in Python 3.5+.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue38118] Valgrind warnings when running tokenize.py

[Benjamin Peterson]

Change by Benjamin Peterson :


--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> off-by-one error in PyState_AddModule

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[issue37802] micro-optimization of PyLong_FromSize_t()

[Gregory P. Smith]

Change by Gregory P. Smith :


--
resolution:  -> fixed
stage: patch review -> commit review
status: open -> closed

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[issue21872] LZMA library sometimes fails to decompress a file

[miss-islington]

miss-islington  added the comment:


New changeset a3c53a1b45b05bcb69660eac5a271443b37ecc42 by Miss Islington (bot) 
in branch '3.7':
bpo-21872: fix lzma library decompresses data incompletely (GH-14048)
https://github.com/python/cpython/commit/a3c53a1b45b05bcb69660eac5a271443b37ecc42


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[issue37802] micro-optimization of PyLong_FromSize_t()

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset c6734ee7c55add5fdc2c821729ed5f67e237a096 by Gregory P. Smith 
(Sergey Fedoseev) in branch 'master':
bpo-37802: Slightly improve perfomance of PyLong_FromUnsigned*() (GH-15192)
https://github.com/python/cpython/commit/c6734ee7c55add5fdc2c821729ed5f67e237a096


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[issue38138] test_importleak is leaking references

[Stéphane Wirtel]

Stéphane Wirtel  added the comment:

I close the issue, I have tested with 3.8, there is no leaks with 
test_importlib, nice ;-)

Thanks Dino

--
nosy: +matrixise
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue36876] Global C variables are a problem.

[Eric Snow]

Change by Eric Snow :


--
pull_requests: +15681
pull_request: https://github.com/python/cpython/pull/16058

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[issue21872] LZMA library sometimes fails to decompress a file

[miss-islington]

miss-islington  added the comment:


New changeset 824407f76e211a2a19c94d5cb1f39fc422ab62ee by Miss Islington (bot) 
in branch '3.8':
bpo-21872: fix lzma library decompresses data incompletely (GH-14048)
https://github.com/python/cpython/commit/824407f76e211a2a19c94d5cb1f39fc422ab62ee


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nosy: +miss-islington

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[issue37012] Possible crash due to PyType_FromSpecWithBases()

[Petr Viktorin]

Change by Petr Viktorin :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue37090] test_gdb's test_pycfunction should test all calling conventions

[Petr Viktorin]

Petr Viktorin  added the comment:

Fixed here and in https://bugs.python.org/issue37499 ( 
https://github.com/python/cpython/pull/15776 )

--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue38137] hashopenssl fails to compile on MacOS

[Stéphane Wirtel]

Change by Stéphane Wirtel :


--
pull_requests: +15680
pull_request: https://github.com/python/cpython/pull/16057

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[issue38138] test_importleak is leaking references

[miss-islington]

miss-islington  added the comment:


New changeset 8d88e8c662a80c186c7a0e67f1c1f3d4010276f8 by Miss Islington (bot) 
(Dino Viehland) in branch 'master':
bpo-38138: Fix memory leak introduced by interned strings (GH-16053)
https://github.com/python/cpython/commit/8d88e8c662a80c186c7a0e67f1c1f3d4010276f8


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nosy: +miss-islington

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[issue36960] Make datetime docs more user-friendly

[miss-islington]

miss-islington  added the comment:


New changeset 8976359c598f56825648f4e5397b78c5d14ea13c by Miss Islington (bot) 
in branch '3.8':
Overhaul datetime documentation (GH-13410)
https://github.com/python/cpython/commit/8976359c598f56825648f4e5397b78c5d14ea13c


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[issue36991] zipfile: AttributeError on extract

[miss-islington]

miss-islington  added the comment:


New changeset 717cc61ed103684b8c73e0e8af10ace345f39f16 by Miss Islington (bot) 
in branch '3.8':
bpo-36991: Fix incorrect exception escaping ZipFile.extract() (GH-13632)
https://github.com/python/cpython/commit/717cc61ed103684b8c73e0e8af10ace345f39f16


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nosy: +miss-islington

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[issue37141] Allow multiple separators in Stream.readuntil

[Andrew Svetlov]

Andrew Svetlov  added the comment:

please do

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[issue38137] hashopenssl fails to compile on MacOS

[miss-islington]

miss-islington  added the comment:


New changeset 9a4963b932a087b78596cca0b8394ac898faa490 by Miss Islington (bot) 
(Christian Heimes) in branch 'master':
bpo-38137: Re-add OpenSSL 1.0.2 compat (GH-16051)
https://github.com/python/cpython/commit/9a4963b932a087b78596cca0b8394ac898faa490


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nosy: +miss-islington

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[issue21872] LZMA library sometimes fails to decompress a file

[Gregory P. Smith]

Gregory P. Smith  added the comment:


New changeset 4ffd05d7ec47cfd0d7fc95dce851633be9663255 by Gregory P. Smith 
(animalize) in branch 'master':
bpo-21872: fix lzma library decompresses data incompletely (GH-14048)
https://github.com/python/cpython/commit/4ffd05d7ec47cfd0d7fc95dce851633be9663255


--
nosy: +gregory.p.smith

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[issue36373] Deprecate explicit loop parameter in all public asyncio APIs

[Andrew Svetlov]

Change by Andrew Svetlov :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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