[issue32471] Add an UML class diagram to the collections.abc module documentation

[Yahya Abou Imran]

Yahya Abou Imran  added the comment:

I succeed in submitting a PR and building the doc locally.

But there is a little problem of consistency with the abstract methods:
in some classes, the inherited one are mentioned (Collection, Sequence, 
Mapping), but not in some others (Coroutine, Reversible).

So I don't not what to show and what to hide.

I opened an other issue for this:
https://bugs.python.org/issue32621

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[issue32654] Fixes Python for Android API 19

[STINNER Victor]

STINNER Victor  added the comment:

I wrote PR 5305 for Paul Peny who uses cheap devices (less than 50$, maybe less 
20$? I'm not sure) for development, but these devices use old Android versions.

It seems like some people are exchanging patches, in private or in public, for 
Android API 19. My intent is to make patches upstream, especially small patches 
which fix compilation of Python on Android API 19.

I'm not sure that we should support API 19.

Xavier de Gaye wants to focus on the future, support API 24 and newer:
https://github.com/xdegaye/cagibi/blob/master/doc/android_support.rst

His document gives many good reasons to not support API < 24.

My intent is not to "fully support" Python on Android API 19. Just to make sure 
that we can compile Python and that python3 -c pass doesn't crash :-) So only 
merge the most critical fixes for API 19.

IMHO merging further changes to fix other Python functions should be discussed 
on a case by base basis.

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[issue32621] Problem of consistence in collection.abc documentation

[Yahya Abou Imran]

Yahya Abou Imran  added the comment:

There is another one:

Reversible list __reversed__ in the abstract method but inherits __iter__ from 
Iterable.

So there is definitely an inconsistency...

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[issue27505] Missing documentation for setting module __class__ attribute

[Cheryl Sabella]

Change by Cheryl Sabella :


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[issue27505] Missing documentation for setting module __class__ attribute

[Cheryl Sabella]

Cheryl Sabella  added the comment:

Thanks Nick.  I've made the PRs for the versionadded and to add __class__ to 
the 3.6 docs.

--
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versions: +Python 3.7 -Python 3.5

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[issue27505] Missing documentation for setting module __class__ attribute

[Cheryl Sabella]

Change by Cheryl Sabella :


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[issue32645] test_asyncio: TLS tests fail on "x86 Windows7" buildbot

[STINNER Victor]

STINNER Victor  added the comment:

Build 537 of x86 Tiger 3.x failed, whereas the previous build was a success. 
Hum, maybe these asyncio failures are "just" race conditions, trigger if the 
system load is too high? I recall that the Windows 7 buildbot is usually 
slow/busy.

http://buildbot.python.org/all/#/builders/30/builds/537

==
ERROR: test_start_tls_client_1 
(test.test_asyncio.test_sslproto.SelectorStartTLSTests)
--
Traceback (most recent call last):
  File 
"/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/test/test_asyncio/test_sslproto.py",
 line 225, in test_start_tls_client_1
asyncio.wait_for(client(srv.addr), loop=self.loop, timeout=10))
  File 
"/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/asyncio/base_events.py", line 
436, in run_until_complete
return future.result()
  File "/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/asyncio/tasks.py", line 
406, in wait_for
raise futures.TimeoutError()
concurrent.futures._base.TimeoutError
==
ERROR: test_start_tls_server_1 
(test.test_asyncio.test_sslproto.SelectorStartTLSTests)
--
Traceback (most recent call last):
  File 
"/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/test/test_asyncio/test_sslproto.py",
 line 285, in test_start_tls_server_1
asyncio.wait_for(main(), loop=self.loop, timeout=10))
  File 
"/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/asyncio/base_events.py", line 
436, in run_until_complete
return future.result()
  File "/Users/db3l/buildarea/3.x.bolen-tiger/build/Lib/asyncio/tasks.py", line 
406, in wait_for
raise futures.TimeoutError()
concurrent.futures._base.TimeoutError

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[issue27505] Missing documentation for setting module __class__ attribute

[Cheryl Sabella]

Change by Cheryl Sabella :


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[issue32657] Mutable Objects in SMTP send_message Signature

[Steven D'Aprano]

Steven D'Aprano  added the comment:

On Thu, Jan 25, 2018 at 02:28:17PM +, R. David Murray wrote:

> obviously I missed that mutation of the value 
> in the code review of the patch that added those lines :(

The docstring for send_message does say 

If the sender or any of the recipient addresses contain non-ASCII
and the server advertises the SMTPUTF8 capability, the policy is
cloned with utf8 set to True for the serialization, and SMTPUTF8
and BODY=8BITMIME are asserted on the send.

which I don't really understand, but I thought that perhaps it was a 
typo for *inserted* on the send, in the sense of inserted into the mail 
options:

mail_options += ['SMTPUTF8', 'BODY=8BITMIME']

So are we agreed this is a bug? What about the default for rcpt_options 
being a dict?

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[issue32667] Failing test_dtrace and test_subprocess on Ubuntu 16.04 on master

[Jay Yin]

New submission from Jay Yin :

Hello everyone,


I've been trying to build the master branch on Ubuntu 16.04 and it currently 
fails 2 test, I was wondering if this was normal or if I'm missing 
dependencies, I also tried apt-get build-dev python3.6 and python3.7 to no 
avail, the build requirements install worked for python3.5 but I suspect 3.7 
has different dependencies but I can't find where the documentation for the 
requirements are. 
2 tests failed:
test_dtrace test_subprocess


running test_dtrace as verbose gave https://pastebin.com/ZGzzxwjk

[Bash] FAILED (errors=4) test test_dtrace failed 1 test failed: test_dtrace R - 
Pastebin.com
pastebin.com


and running test_subprocess gives


https://pastebin.com/DNjPzpgp

--
messages: 310678
nosy: jayyin11043
priority: normal
severity: normal
status: open
title: Failing test_dtrace and test_subprocess on Ubuntu 16.04 on master
type: compile error
versions: Python 3.7

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[issue32664] Connector "|" missing between ImportError and LookupError

[Berker Peksag]

Change by Berker Peksag :


--
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stage:  -> needs patch
versions: +Python 3.7

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[issue32657] Mutable Objects in SMTP send_message Signature

[R. David Murray]

R. David Murray  added the comment:

Chason: that does look like a bug.

Mutable defaults are best to avoid, but if they are used read-only and not 
passed down further it isn't a problem.  send_message was modeled on sendmail, 
and so copied it's use of defaults (which date from quite some time back :), 
but obviously I missed that mutation of the value in the code review of the 
patch that added those lines :(

--
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[issue10381] Add timezone support to datetime C API

[Paul Ganssle]

Change by Paul Ganssle :


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[issue10381] Add timezone support to datetime C API

[STINNER Victor]

STINNER Victor  added the comment:

Ok, this time it should be fixed for real ;-)

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[issue32256] Make patchcheck.py work for out-of-tree builds

[Alexey Izbyshev]

Alexey Izbyshev  added the comment:

Any objections to the PR?

--
nosy: +belopolsky, eric.araujo

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[issue32223] distutils doesn't correctly read UTF-8 content from config files

[Jan Vlcinsky]

Jan Vlcinsky  added the comment:

The fix shall go to

https://github.com/python/cpython/blob/2812d3d99287c50bab99625d7240bcf1c2e32369/Lib/distutils/dist.py#L406

where `parser.read(filename)`

shall be changed to `parser.read(filename, encoding="utf-8")`

This assumes that the setup.cfg shall be UTF-8 encoded what I thing is correct 
assumption.

Alternative assumptions are (and I do not find them good):

- assume the file is encoded as current console is (this is not deterministic 
and is direct cause of this issue)
- let user to specify the encoding somewhere around (this requires extra step 
and does not bring any value)

--
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[issue32654] Fixes Python for Android API 19

[STINNER Victor]

Change by STINNER Victor :


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[issue10381] Add timezone support to datetime C API

[Paul Ganssle]

Change by Paul Ganssle :


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[issue32236] open() shouldn't silently ignore buffering=1 in binary mode

[STINNER Victor]

Change by STINNER Victor :


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[issue32666] Valgrind documentation seems to need updating

[Reuben Thomas]

New submission from Reuben Thomas :

I have just been trying to use Valgrind (in my case, to debug code in a library 
being tested via a Cython module).

It is working fine, but there seem to be some discrepancies between the 
documentation in README.valgrind and valgrind-python.supp on the one hand, and 
the actual code on the other.

README.Valgrind says (current git master):

Second, you must do one of the following:

  * Uncomment Py_USING_MEMORY_DEBUGGER in Objects/obmalloc.c,
then rebuild Python
  * Uncomment the lines in Misc/valgrind-python.supp that
suppress the warnings for PyObject_Free and PyObject_Realloc

However, Objects/objmalloc.c no longer contain this symbol (though 
Python/dtoa.c does).

Further, in https://bugs.python.org/issue31494 I find the following comment:

Also, I don't think --with-pydebug works well with valgrind.

It's either:
   1) --with-pydebug
   2) CFLAGS="-O0 -g" --with-valgrind
   3) CFLAGS="-O0 -g" --without-pymalloc

Combining 2) and 3) probably does not hurt, but is not necessary.

It would be useful to have this information in README.valgrind.

Also, the provided suppressions do not currently work with a normal build of 
Python, at least with Python 2.7 (with the PyObject_{Free,Realloc} suppressions 
uncommented). There seem to be at least two problems:

1. Extra symbols from LTO. This can be fixed by adding "*" to PyObject_Realloc 
in all its suppressions.

2. After fixing that, I still get one more "Invalid read of size 4":

==3227== Invalid read of size 4
==3227==at 0x4FCEE2: long_dealloc.lto_priv.323 (abstract.c:2000)
==3227==by 0x4BA22B: frame_dealloc (frameobject.c:458)
==3227==by 0x4BA22B: PyEval_EvalCodeEx (ceval.c:3593)
==3227==by 0x4C16E6: fast_function (ceval.c:4445)
==3227==by 0x4C16E6: call_function (ceval.c:4370)

I can't see how this is related to any existing suppression.

I am using the stock Python 2.7 on Ubuntu 16.04. I find that I can work around 
both the above problems (that is, use the suppressions file as-is, just 
uncommenting the extra suppressions for PyObject_{Free,Realloc}) by using 
Ubuntu's debug build of Python (installed as /usr/bin/python-dbg). It is built 
with --with-pydebug.

Finally, README.valgrind says: "Valgrind is used periodically by Python 
developers to try to ensure there are no memory leaks or invalid memory 
reads/writes." Another reason to use Valgrind is, as in my case, to debug 
unrelated C code that is being run via Python (this is often a convenient way 
to write tests). I suggest deleting this sentence and making it more obvious 
how to simply make Python "transparent to Valgrind" for those trying to debug C 
libraries.

To summarise:

i. It seems that for current Python 3, this text:

  * Uncomment Py_USING_MEMORY_DEBUGGER in Objects/obmalloc.c,
then rebuild Python

needs to be updated.

ii. For Python 2.7 at least, and possibly Python 3, extra suppressions are 
needed to use a standard build.

iii. It would be good to have the specific build advice from 
https://bugs.python.org/issue31494 in README.valgrind.

iv. It would be nice to clarify how to use a normal build of Python (e.g. by 
splitting the advice into "For Python developers" and "For Python users").

Given some guidance on what is correct, and what is desired/acceptable, I'd be 
happy to work up a patch to README.valgrind and valgrind-python.supp.

--
assignee: docs@python
components: Documentation
messages: 310673
nosy: docs@python, rrt
priority: normal
severity: normal
status: open
title: Valgrind documentation seems to need updating
versions: Python 3.8

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[issue32236] open() shouldn't silently ignore buffering=1 in binary mode

[Alexey Izbyshev]

Alexey Izbyshev  added the comment:

Any feedback on the updated PR?

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[issue32637] Android: set sys.platform to android

[Xavier de Gaye]

Change by Xavier de Gaye :


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[issue32665] pathlib.Path._from_parsed_parts should call cls.__new__(cls)

[qb-cea]

New submission from qb-cea :

Hi,

I tried subclassing pathlib.Path and provide it with a new attribute (basically 
an accessor to an extended attribute). I am rather new to the concept of 
__slots__ and __new__() but here is how I pictured it should look:

from errno import ENODATA
from os import getxattr, setxattr
from pathlib import Path

class Path_(type(Path())):

__slots__ = ("new_attr",)

def __new__(cls, *args, new_attr=None, **kwargs):
self = super().__new__(cls, *args, **kwargs)
self._new_attr = new_attr
return self

@property
def new_attr(self):
if self._new_attr:
return self._new_attr

try:
new_attr = getxattr(self, "user.new_attr")
except OSError as exc:
if exc.errno != ENODATA:
raise exc
else:
self._new_attr = new_attr
return new_attr

new_attr = b"something_dynamic" # for example uuid4().bytes
setxattr(self, "user.new_attr", new_attr)
self._new_attr = new_attr
return new_attr

The issue I have is that although my class defines its own __new__() method, it 
is not always called by the methods of pathlib.Path. For example:

>>> Path_("/etc").parent.new_attr
Traceback (most recent call last):
  File "", line 1, in 
  File "/path/to/reproducer.py", line 19, in new_attr
if self._new_attr:
AttributeError: _new_attr

The current workaround I use consists in redefining pathlib.Path's 
_from_parsed_parts() method in my class: instead of creating a new object using:
object.__new__(cls)
my implementation uses:
cls.__new__(cls)

This is the first time I play with the __new__() special method, so it is 
possible I missed something, if so, sorry for the noise.

--
components: Library (Lib)
files: reproducer.py
messages: 310671
nosy: pitrou, qb-cea
priority: normal
severity: normal
status: open
title: pathlib.Path._from_parsed_parts should call cls.__new__(cls)
versions: Python 3.6
Added file: https://bugs.python.org/file47409/reproducer.py

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[issue32596] Lazy import concurrent.futures.process and thread

[INADA Naoki]

Change by INADA Naoki :


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[issue32360] Save OrderedDict imports in various stdlibs.

[INADA Naoki]

INADA Naoki  added the comment:


New changeset 2812d3d99287c50bab99625d7240bcf1c2e32369 by INADA Naoki in branch 
'master':
bpo-32360: Remove OrderedDict usage from json.tool (GH-5315)
https://github.com/python/cpython/commit/2812d3d99287c50bab99625d7240bcf1c2e32369


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[issue32360] Save OrderedDict imports in various stdlibs.

[INADA Naoki]

Change by INADA Naoki :


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[issue27645] Supporting native backup facility of SQLite

[Lele Gaifax]

Lele Gaifax  added the comment:

I suspect this won't land in 3.7...

Let me know if I can do something to make that happen, or instead if I should 
try to rebase the change on top of current master and rectify references to the 
Python version.

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[issue32513] dataclasses: make it easier to use user-supplied special methods

[Eric V. Smith]

Eric V. Smith  added the comment:

I'll look at the hash question later today. It's sufficiently complex that I 
really want to sit down and work through all of the cases.

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[issue32663] SMTPUTF8SimTests are not actually being run

[Chason Chaffin]

Change by Chason Chaffin :


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pull_requests: +5160
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[issue32655] File mode should be a constant

[Nitish]

Nitish  added the comment:

It appears some files like Lib/tokenize.py changes the mode of TextIOWrapper:

text = TextIOWrapper(buffer, encoding, line_buffering=True)
text.mode = 'r'

setting of mode via _PyObject_SetAttrId(wrapper, &PyId_mode, modeobj) is done 
in some source files too.

What I don't understand is since TextIOWrapper doesn't store the mode 
explicitly, this only adds 'mode' variable to the the object's dict. So why 
bother setting the mode in all these files?

--
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[issue32664] Connector "|" missing between ImportError and LookupError

[Richard Neumann]

New submission from Richard Neumann :

In the documentation of the built-in exceptions hierarchy, there is a "|" 
missing connecting ImportError and LookupError.

https://docs.python.org/3/library/exceptions.html#exception-hierarchy

>From LookupError.__mro__ we can tell, that it is actually derived from 
>Exception, thus there should be a "|" connecting it to the hierarchy under 
>Exception to emphasize that (like between ArithmeticError and AssertionError).

--
assignee: docs@python
components: Documentation
messages: 310666
nosy: Richard Neumann, docs@python
priority: normal
severity: normal
status: open
title: Connector "|"  missing between ImportError and LookupError
type: enhancement
versions: Python 3.6

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[issue32571] Speed up and clean up getting optional attributes in C code

[INADA Naoki]

INADA Naoki  added the comment:


New changeset f320be77ffb73e3b9e7fc98c37b8df3975d84b40 by INADA Naoki (Serhiy 
Storchaka) in branch 'master':
 bpo-32571: Avoid raising unneeded AttributeError and silencing it in C code 
(GH-5222)
https://github.com/python/cpython/commit/f320be77ffb73e3b9e7fc98c37b8df3975d84b40


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[issue32663] SMTPUTF8SimTests are not actually being run

[Chason Chaffin]

New submission from Chason Chaffin :

In the tests for smtplib, the suite of tests for SMTPUTF8SimTests (added by 
issue 24218)  are not actually being run. This is troublesome in particular, 
because the test test_send_message_error_on_non_ascii_addrs_if_no_smtputf8 
calls assertRaises incorrectly and thus fails.

--
components: Tests
messages: 310664
nosy: chason
priority: normal
severity: normal
status: open
title: SMTPUTF8SimTests are not actually being run
type: behavior

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[issue32652] test_distutils: BuildRpmTestCase tests fail on RHEL buildbots

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 2b822a0bb1de2612c85d8f75e3ce89eda2ac9f68 by Victor Stinner in 
branch 'master':
bpo-32652: Defer pymain_set_global_config() call (#5303)
https://github.com/python/cpython/commit/2b822a0bb1de2612c85d8f75e3ce89eda2ac9f68


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[issue10381] Add timezone support to datetime C API

[STINNER Victor]

STINNER Victor  added the comment:

Hunting reference leaks with "./python -m test -R 3:3 test_datetime" crashs 
since the commit 04af5b1ba9eb546a29735fac6cb5298159069b53.

***
vstinner@apu$ ./python -m test -R 3:3 test_datetime 
Run tests sequentially
0:00:00 load avg: 1.05 [1/1] test_datetime
beginning 6 repetitions
123456
Fatal Python error: Segmentation fault

Current thread 0x7ff71fe33040 (most recent call first):
  File "/home/vstinner/prog/python/master/Lib/test/datetimetester.py", line 
5464 in test_utc_capi
  (...)
Segmentation fault (core dumped)
***

Shorter example without -R, just run the same test twice:
***
vstinner@apu$ ./python -m test -v test_datetime test_datetime -m test_utc_capi
== CPython 3.7.0a4+ (heads/master:cab0b2b053, Jan 25 2018, 09:06:01) [GCC 7.2.1 
20170915 (Red Hat 7.2.1-2)]
== Linux-4.14.13-300.fc27.x86_64-x86_64-with-fedora-27-Twenty_Seven 
little-endian
== cwd: /home/vstinner/prog/python/master/build/test_python_26308
== CPU count: 8
== encodings: locale=UTF-8, FS=utf-8
Run tests sequentially
0:00:00 load avg: 1.26 [1/2] test_datetime
test_utc_capi (test.datetimetester.CapiTest_Pure) ... skipped 'Not relevant in 
pure Python'
test_utc_capi (test.datetimetester.CapiTest_Fast) ... ok

--
Ran 2 tests in 0.001s

OK (skipped=1)
0:00:00 load avg: 1.26 [2/2] test_datetime
test_utc_capi (test.datetimetester.CapiTest_Pure) ... skipped 'Not relevant in 
pure Python'
test_utc_capi (test.datetimetester.CapiTest_Fast) ... Fatal Python error: 
Segmentation fault

Current thread 0x7f9836b31040 (most recent call first):
  File "/home/vstinner/prog/python/master/Lib/test/datetimetester.py", line 
5464 in test_utc_capi
  (...)
Segmentation fault (core dumped)
***

--
nosy: +vstinner
resolution: fixed -> 
status: closed -> open

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[issue29708] support reproducible Python builds

[Alexandru Ardelean]

Alexandru Ardelean  added the comment:

Hey,

Sorry, if I'm a bit late to the party with this.
The road to reproducible builds has a few more steps.

The way I validate whether Python is reproducible is with this link:
https://tests.reproducible-builds.org/lede/lede_ar71xx.html

There is a need to also patch getbuildinfo.c to make Python reproducible.

I have opened a PR for this : https://github.com/python/cpython/pull/5313

I've waited for the periodic build to trigger on that reproducible page.
In OpenWrt, the packages to look for [that is affected by this getbuildinfo.c 
patch] are python-base & python3-base.

There are still some python3 packages that need patching.
Seems that python3-asyncio, pydoc, and some other pyc files need investigation.
I'll check.
Maybe this isn't an issue in 3.7.

Alex

--

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