[issue25210] Special-case NoneType() in do_richcompare()

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I find the request reasonable too.

--
nosy: +serhiy.storchaka
stage: test needed -> needs patch

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[issue16322] time.tzname on Python 3.3.0 for Windows is decoded by wrong encoding

[eryksun]

eryksun added the comment:

> import locale
> locale.setlocale(locale.LC_ALL, '')
>
> import importlib
> import time
> importlib.reload(time)
>
> it does not work when imported after importing time. 
> What is the reason? Does reload() work only for 
> modules coded as Python sources? 

The import system won't reinitialize a builtin or dynamic extension module. 
Reloading just returns a reference to the existing module. It won't even reload 
a PEP 489 multi-phase extension module. (But you can create and exec a new 
instance of a multi-phase extension module.) 

> Is there any other approach that would implement the 
> workaroundXXX.py module?

If the user's default locale and the current thread's preferred language are 
compatible with the system ANSI encoding [1], then you don't actually need to 
call _tzset nor worry about time.tzname. Call setlocale(LC_CTYPE, ''), and then 
call time.strftime('%Z') to get the timezone name. 

If you use Win32 directly instead of the CRT, then none of this ANSI business 
is an issue. Just call GetTimeZoneInformation to get the standard and daylight 
names as wide-character strings. You have that option via ctypes.

[1]: A user can select a default locale (language) that's unrelated to the 
system ANSI locale (the ANSI setting is per machine, located under 
Region->Administrative). Also, the preferred language can be selected 
dynamically by calling SetThreadPreferredUILanguages or 
SetProcessPreferredUILanguages. All three could be incompatible with each 
other, in which case you have to explicitly set the locale (e.g. "ru-RU" 
instead of an empty string) and call _tzset.

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[issue25210] Special-case NoneType() in do_richcompare()

[Ezio Melotti]

New submission from Ezio Melotti:

do_richcompare() has a comment (at Objects/object.c:689) that reads:

/* XXX Special-case None so it doesn't show as NoneType() */

This refers to the following error message:

>>> 3 < None
Traceback (most recent call last):
  File "", line 1, in 
TypeError: unorderable types: int() < NoneType()

This is a common error that comes up while ordering/sorting, and NoneType() is 
potentially confusing, so I find the request reasonable.
If the consensus is favourable, it should be implemented, if not, the comment 
should be removed.

--
components: Interpreter Core
keywords: easy
messages: 251288
nosy: ezio.melotti
priority: low
severity: normal
stage: test needed
status: open
title: Special-case NoneType() in do_richcompare()
type: enhancement
versions: Python 3.6

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[issue24841] Some test_ssl network tests fail if svn.python.org is not accessible.

[Berker Peksag]

Berker Peksag added the comment:

The attached patch should fix the test failures.

--
keywords: +patch
stage: needs patch -> patch review
type:  -> behavior
Added file: http://bugs.python.org/file40542/issue24841.diff

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[issue25201] lock of multiprocessing.Value is not a keyword-only argument

[Berker Peksag]

Berker Peksag added the comment:

I didn't test it carefully. It was a mistake on my part :) But I think the 
function signature could be clearer by changing that part to "*, lock=True".

--
resolution:  -> not a bug
stage: needs patch -> resolved
status: open -> closed

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[issue16893] Generate Idle help from Doc/library/idle.rst

[Terry J. Reedy]

Terry J. Reedy added the comment:

NEWS entries are done.

I added a function, copy_strip, to help.py to rstrip (in bytes mode) idle.html 
as it copies to help.html.  (I changed the name to better remember which is 
which.)  In my .bat file, with Doc as current directory, I use
  ..\pcbuild\python_d.exe -c "from idlelib.help import copy_strip; copy_strip()"
I could change the if __name__ block so that
  ..\pcbuild\python_d.exe -m idlelib.help copy_strip
would work.  Either way, I would like to add 'idlehelp' to makefiles.  But not 
tonight.

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[issue16893] Generate Idle help from Doc/library/idle.rst

[Roundup Robot]

Roundup Robot added the comment:

New changeset 855484b55da3 by Terry Jan Reedy in branch '2.7':
Issue #16893: Add idlelib.help.copy_strip() to copy-rstrip Doc/.../idle.html.
https://hg.python.org/cpython/rev/855484b55da3

New changeset df987a0bc350 by Terry Jan Reedy in branch '3.4':
Issue #16893: Add idlelib.help.copy_strip() to copy-rstrip Doc/.../idle.html.
https://hg.python.org/cpython/rev/df987a0bc350

New changeset f08437278049 by Terry Jan Reedy in branch '3.5':
Issue #16893: Add idlelib.help.copy_strip() to copy-rstrip Doc/.../idle.html.
https://hg.python.org/cpython/rev/f08437278049

New changeset 09ebed6a8cb8 by Terry Jan Reedy in branch 'default':
Issue #16893: Add idlelib.help.copy_strip() to copy-rstrip Doc/.../idle.html.
https://hg.python.org/cpython/rev/09ebed6a8cb8

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[issue24657] CGIHTTPServer module discard continuous '/' letters from params given by GET method.

[Martin Panter]

Martin Panter added the comment:

Yes it also seems to apply to Python 3.

Perhaps you forgot your test script, so I made my own. After running

python3 -m http.server --cgi

The response from the following URL has no double slashes to be seen:

http://localhost:8000/cgi-bin/test.py//x//y//?k=aa%2F%2Fbb&//q//p//=//a//b//

I am not a CGI expert, but I suspect the query string bits should have double 
slashes, but maybe the PATH_INFO is right not to (see RFC 3875).

--
nosy: +martin.panter
stage:  -> needs patch
type:  -> behavior
versions: +Python 3.4, Python 3.5, Python 3.6
Added file: http://bugs.python.org/file40541/test.py

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[issue25209] Append space after completed keywords

[Martin Panter]

Martin Panter added the comment:

I agree with adding a space in some cases, but not others. E.g. "pass" would 
only need a space if you wanted to add a comment, "return" often takes no 
argument, "lambda" may need an immediate colon (lambda: x). See 
 for 
a whitelist of keywords that I thought should always have spaces, but beware 
this list may not be up to date (no “await” nor “async” for instance).

BTW I don’t agree with the default of forcing an open bracket “(” for 
callables; consider decorators, subclassing, deferred function calls, etc, 
where that bracket may not be wanted.

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[issue25201] lock of multiprocessing.Value is not a keyword-only argument

[Davin Potts]

Davin Potts added the comment:

Berker: It looks to me like the docs are indeed in sync with the code on Value 
in that lock really is a keyword-only argument.  It looks like it's been that 
way since at least 2.7 (I didn't look at earlier).  There are enough other 
things in the multiprocessing.sharedctypes, maybe it was one of the others that 
caught your attention instead?

I wished that block/blocking had turned out to be a keyword-only argument in 
multiprocessing.Lock as part of issue23484, which I immediately thought of when 
reading this issue.

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[issue24861] deprecate importing components of IDLE

[Roundup Robot]

Roundup Robot added the comment:

New changeset e9edb95ca8b6 by Terry Jan Reedy in branch '2.7':
Issue #24861: add Idle news items and correct previous errors.
https://hg.python.org/cpython/rev/e9edb95ca8b6

New changeset 5087ca9e6002 by Terry Jan Reedy in branch '3.4':
Issue #24861: add Idle news item and correct previous errors.
https://hg.python.org/cpython/rev/5087ca9e6002

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[issue25207] ICC compiler warnings

[Roundup Robot]

Roundup Robot added the comment:

New changeset 170cd0104267 by Victor Stinner in branch 'default':
Issue #25207, #14626: Fix my commit.
https://hg.python.org/cpython/rev/170cd0104267

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[issue14626] os module: use keyword-only arguments for dir_fd and nofollow to reduce function count

[Roundup Robot]

Roundup Robot added the comment:

New changeset 170cd0104267 by Victor Stinner in branch 'default':
Issue #25207, #14626: Fix my commit.
https://hg.python.org/cpython/rev/170cd0104267

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[issue24870] Optimize coding with surrogateescape and surrogatepass error handlers

[STINNER Victor]

STINNER Victor added the comment:

Ok, I prepared the code for the UTF-8 optimization.

@Serhiy: would you like to rebase your patch  faster_surrogates_hadling.patch?

Attached utf8.patch is a less optimal implementation which only changes 
PyUnicode_DecodeUTF8Stateful(). Maybe it's enough?

I would like to see a benchmark here to choose the good compromise between 
performance and code complexity.

--
Added file: http://bugs.python.org/file40540/utf8.patch

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[issue24870] Optimize coding with surrogateescape and surrogatepass error handlers

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2cf85e2834c2 by Victor Stinner in branch 'default':
Issue #24870: Reuse the new _Py_error_handler enum
https://hg.python.org/cpython/rev/2cf85e2834c2

New changeset aa247150a8b1 by Victor Stinner in branch 'default':
Issue #24870: Add _PyUnicodeWriter_PrepareKind() macro
https://hg.python.org/cpython/rev/aa247150a8b1

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[issue25205] setattr accepts invalid identifiers

[Martin Panter]

Martin Panter added the comment:

Previous report: Issue 14029

--
nosy: +martin.panter

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[issue25206] PEP 498: Minor mistakes/outdateness

[Martin Panter]

Martin Panter added the comment:

Also in the first example, the colon (format specifier) and exclamation mark 
(conversion) are in the wrong order. It should either be

f"{expr3:!s}" → format(expr3, "!s")

or

f"{expr3!s:}" → format(str(expr3), "")

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Brett Cannon]

Brett Cannon added the comment:

Ah, OK. As I said I had not run it so I wasn't sure of the actual outcome. =)

As for keyword-only arguments/parameters, see 
https://www.python.org/dev/peps/pep-3102/ . They are a Python 3 feature.

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[issue18967] Find a less conflict prone approach to Misc/NEWS

[Brett Cannon]

Brett Cannon added the comment:

As soon as someone finds the time to make the change we can switch. While this 
is a necessary requirement to change the workflow it isn't gated by it either.

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[issue25184] "python -m pydoc -w" fails in nondecodable directory

[Martin Panter]

Martin Panter added the comment:

Serhiy’s patch essentially uses the local filesystem encoding and then percent 
encoding, rather than the current behaviour of strict UTF-8 encoding and 
percent encoding. This is similar to what the “pathlib” make_uri() methods do, 
so maybe we could let “pathlib” do the work instead.

This draft RFC discusses encoding “file:” URLs:

https://tools.ietf.org/html/draft-ietf-appsawg-file-scheme-03#section-4

It suggests leaving Unicode characters alone (in IRIs) if possible, or using 
UTF-8 and percent encoding even if the filesystem uses a non-UTF-8 encoding. 
Perhaps we could leave the filename in the HTML as Unicode characters without 
percent encoding, and only percent encode the undecodable (surrogate-escaped) 
bytes.

This “IRI” scheme is also recommended by 
, 
which says on Windows, “in file URIs, percent-encoded octets are interpreted as 
a byte in the user’s current codepage”. This contradicts the draft RFC and the 
“pathlib” implementation, which both use UTF-8.

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[issue24870] Optimize coding with surrogateescape and surrogatepass error handlers

[STINNER Victor]

STINNER Victor added the comment:

I pushed a change to optimize the ASCII decoder.

Attached bench.py script: microbenchmark on the ASCII decoder. My results 
follows.

Common platform:
Platform: Linux-4.1.5-200.fc22.x86_64-x86_64-with-fedora-22-Twenty_Two
Bits: int=32, long=64, long long=64, size_t=64, void*=64
Timer: time.perf_counter
CFLAGS: -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g 
-fwrapv -O3 -Wall -Wstrict-prototypes
CPU model: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz
Python unicode implementation: PEP 393
Timer info: namespace(adjustable=False, 
implementation='clock_gettime(CLOCK_MONOTONIC)', monotonic=True, 
resolution=1e-09)

Platform of campaign before:
Timer precision: 57 ns
Date: 2015-09-21 23:48:00
SCM: hg revision=73867bf953e6 branch=default date="2015-09-21 22:40 +0200"
Python version: 3.6.0a0 (default:73867bf953e6, Sep 21 2015, 23:47:35) [GCC 
5.1.1 20150618 (Red Hat 5.1.1-4)]

Platform of campaign after:
Timer precision: 55 ns
Date: 2015-09-21 23:52:55
Python version: 3.6.0a0 (default:bb0f55f1ec22+, Sep 21 2015, 23:52:43) [GCC 
5.1.1 20150618 (Red Hat 5.1.1-4)]
SCM: hg revision=bb0f55f1ec22+ tag=tip branch=default date="2015-09-21 23:06 
+0200"

--+-+---
ignore|  before |  after
--+-+---
256 x 10**1 bytes |  314 us (*) | 5.25 us (-98%)
256 x 10**3 bytes | 31.9 ms (*) |  509 us (-98%)
256 x 10**2 bytes | 3.13 ms (*) | 50.2 us (-98%)
256 x 10**4 bytes |  315 ms (*) | 5.12 ms (-98%)
--+-+---
Total |  351 ms (*) | 5.69 ms (-98%)
--+-+---

--+-+---
replace   |  before |  after
--+-+---
256 x 10**1 bytes |  352 us (*) | 6.32 us (-98%)
256 x 10**3 bytes | 35.2 ms (*) |  608 us (-98%)
256 x 10**2 bytes | 3.52 ms (*) | 60.9 us (-98%)
256 x 10**4 bytes |  354 ms (*) | 6.19 ms (-98%)
--+-+---
Total |  393 ms (*) | 6.87 ms (-98%)
--+-+---

--+-+---
surrogateescape   |  before |  after
--+-+---
256 x 10**1 bytes |  369 us (*) | 5.92 us (-98%)
256 x 10**3 bytes | 36.8 ms (*) |  570 us (-98%)
256 x 10**2 bytes | 3.69 ms (*) | 56.9 us (-98%)
256 x 10**4 bytes |  371 ms (*) | 5.79 ms (-98%)
--+-+---
Total |  412 ms (*) | 6.43 ms (-98%)
--+-+---

--+-+
backslashreplace  |  before |   after
--+-+
256 x 10**1 bytes |  357 us (*) |  361 us
256 x 10**3 bytes | 35.1 ms (*) | 36.1 ms
256 x 10**2 bytes | 3.52 ms (*) | 3.59 ms
256 x 10**4 bytes |  357 ms (*) |  365 ms
--+-+
Total |  396 ms (*) |  405 ms
--+-+

-+--+---
Summary  |   before |  after
-+--+---
ignore   |   351 ms (*) | 5.69 ms (-98%)
replace  |   393 ms (*) | 6.87 ms (-98%)
surrogateescape  |   412 ms (*) | 6.43 ms (-98%)
backslashreplace |   396 ms (*) | 405 ms
-+--+---
Total| 1.55 sec (*) |  424 ms (-73%)
-+--+---

--
Added file: http://bugs.python.org/file40539/bench.py

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[issue24870] Optimize coding with surrogateescape and surrogatepass error handlers

[Roundup Robot]

Roundup Robot added the comment:

New changeset 3c430259873e by Victor Stinner in branch 'default':
Issue #24870: Optimize the ASCII decoder for error handlers: surrogateescape,
https://hg.python.org/cpython/rev/3c430259873e

--
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[issue1731717] race condition in subprocess module

[Vitaly]

Vitaly added the comment:

Is this issue fixed in python 2.7.10? I am experiencing strange race conditions 
in code that combines threads with multiprocessing pool, whereby a thread is 
spawned by each pool worker. Running on latest Mac OS X.

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[issue18967] Find a less conflict prone approach to Misc/NEWS

[Terry J. Reedy]

Terry J. Reedy added the comment:

Is that something that might happen 'soon' or only when the whole workflow is 
redone?

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[issue25201] lock of multiprocessing.Value is not a keyword-only argument

[Josh Rosenberg]

Josh Rosenberg added the comment:

Agreed. Having a named positional varargs argument makes subsequently defined 
arguments keyword only automatically.

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[issue25205] setattr accepts invalid identifiers

[eryksun]

eryksun added the comment:

To clarify using a unicode name in 2.x, it has to be encodable using the 
default encoding, sys.getdefaultencoding(). Normally this is ASCII.

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[issue16322] time.tzname on Python 3.3.0 for Windows is decoded by wrong encoding

[Petr Prikryl]

Petr Prikryl added the comment:

@eryksun: I see. In my case, I can set the locale before importing the time 
module. However, the code (asciidoc3.py) will be used as a module, and I cannot 
know if the user imported the time module or not.

Instead of your suggestion 
result = result.encode('latin-1').decode('mbcs')

I was thinking to create a module say wordaround16322.py like this:

---
import locale
locale.setlocale(locale.LC_ALL, '')

import importlib
import time
importlib.reload(time)
---

I thought that reloading the time module would be the same as importing is 
later, after setting locale. If that worked, the module could be simply 
imported wherever it was needed. However, it does not work when imported after 
importing time. What is the reason? Does reload() work
only for modules coded as Python sources? Is there any other approach that 
would implement the workaroundXXX.py module?

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[issue25205] setattr accepts invalid identifiers

[eryksun]

eryksun added the comment:

The name can be any str/unicode string, including language keywords: 

>>> setattr(o, 'def', 'allowed')
>>> getattr(o, 'def')
'allowed'
>>> o.def
  File "", line 1
o.def
^
SyntaxError: invalid syntax

and even an empty string:

>>> setattr(o, '', 'mu')
>>> getattr(o, '')
'mu'

This includes instances of str and unicode subclasses, at least in CPython.

--
assignee:  -> docs@python
components: +Documentation
nosy: +docs@python, eryksun
priority: normal -> low
versions:  -Python 2.7

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[issue25209] Append space after completed keywords

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

Open parenthesis ('(') is appended after completed callable globals and 
attributes. I propose to add a space after completed keyword. In most cases a 
space is either required after the keyword, or recommended by PEP8. Attached 
patch implements this.

--
components: Extension Modules
files: rlcompleter_keyword_space.patch
keywords: patch
messages: 251262
nosy: pitrou, r.david.murray, serhiy.storchaka, twouters
priority: normal
severity: normal
stage: patch review
status: open
title: Append space after completed keywords
type: enhancement
versions: Python 3.6
Added file: http://bugs.python.org/file40538/rlcompleter_keyword_space.patch

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[issue25206] PEP 498: Minor mistakes/outdateness

[Roundup Robot]

Roundup Robot added the comment:

New changeset 831276834e4b by Eric V. Smith in branch 'default':
Partial fix for issue 25206: Fixed format() call.
https://hg.python.org/peps/rev/831276834e4b

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[issue25208] improvements to the asyncio documentation

[Benjamin Hodgson]

Changes by Benjamin Hodgson :


--
type:  -> enhancement

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[issue25208] improvements to the asyncio documentation

[Benjamin Hodgson]

New submission from Benjamin Hodgson:

I spotted some grammatical errors in the "Develop with asyncio" page, so I 
improved the wording a bit. I also added a more explicit link to 
BaseEventLoop.set_debug().

--
assignee: docs@python
components: Documentation
files: asynciodocs.patch
keywords: patch
messages: 251260
nosy: Benjamin Hodgson, docs@python
priority: normal
severity: normal
status: open
title: improvements to the asyncio documentation
versions: Python 3.4, Python 3.5
Added file: http://bugs.python.org/file40537/asynciodocs.patch

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[issue16322] time.tzname on Python 3.3.0 for Windows is decoded by wrong encoding

[eryksun]

eryksun added the comment:

> local_encoding = locale.getdefaultlocale()[1]

Use locale.getpreferredencoding().

> b = eval('b' + ascii(result))
> result = b.decode(local_encoding)

It's simpler and more reliable to use 'latin-1' and 'mbcs' (ANSI). For example:

result = result.encode('latin-1').decode('mbcs')

If setlocale(LC_CTYPE, "") is called before importing the time module, then 
tzname is already correct. In this case, the above is either harmless or raises 
a UnicodeEncodeError that can be handled. OTOH, your approach silently corrupts 
the value:

>>> result = 'Střední Evropa (běžný čas)'
>>> b = eval('b' + ascii(result))
>>> b.decode('1251')
'St\\u0159ednн Evropa (b\\u011b\\u017enэ \\u010das)'

Back to the issue. In review, on initial import of the time module, if the CRT 
is using the default "C" locale, we have this inconsistency in which the time 
functions encode/decode tzname as ANSI and mbstowcs decodes tzname as Latin-1. 
(Plus strftime in the new CRT calls wcsftime, which adds another transcoding 
layer to compound the mojibake goodness.)

If time.tzset is implemented on Windows, then at startup an application can set 
the locale (specifically LC_CTYPE for tzname, and LC_TIME for strftime) and 
then call time.tzset(). 

Example with Russian system locale:

Initially we're in the "C" locale and the CRT's tzname is in ANSI. time.tzname 
incorrectly decodes this as Latin-1 since that's what mbstowcs uses in the "C" 
locale:

>>> time.tzname[0]
'\xc2\xf0\xe5\xec\xff \xe2 \xf4\xee\xf0\xec\xe0\xf2\xe5 UTC'

The way the CRT's strftime is implemented compounds the problem:

>>> time.strftime('%Z')
'A?aiy a oi?iaoa UTC'

It's implemented by calling the wide-character function, wcsftime. Just like 
Python, this gets a wide-character string by calling mbstowcs on the ANSI 
tzname. Then the CRT's strftime encodes the wide-character string back as a 
best-fit ANSI string, and finally time.strftime decodes the result as Latin-1 
via mbstowcs. The result is mutated mojibake:

>>> time.tzname[0].encode('mbcs', 'replace').decode('latin-1')
'A?aiy a oi?iaoa UTC'

Ironically, Python stopped calling wcsftime on Windows because of these 
problems, but changes to the code since then, plus the new CRT, have brought 
the problem back, and worse. See my comment in issue 10653, msg243660.

Fix this by setting the locale and calling _tzset:

>>> import ctypes, locale
>>> locale.setlocale(locale.LC_ALL, '')
'Russian_Russia.1251'
>>> ctypes.cdll.ucrtbase._tzset()
0
>>> time.strftime('%Z')
'Время в формате UTC'

If time.tzset were implemented on Windows, calling it would reload the 
time.tzname tuple.

--
versions: +Python 3.6

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[STINNER Victor]

STINNER Victor added the comment:

Sorry, I don't understand if we should apply or not the patch :-/

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[issue25205] setattr accepts invalid identifiers

[STINNER Victor]

STINNER Victor added the comment:

Even if it's not well document, it's legit and supported by CPython, but it may 
not be supported by other Python implementation (ex: PyPy).

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[issue25207] ICC compiler warnings

[Roundup Robot]

Roundup Robot added the comment:

New changeset 73867bf953e6 by Victor Stinner in branch 'default':
ssue #25207: fix ICC compiler warning in msvcrtmodule.c
https://hg.python.org/cpython/rev/73867bf953e6

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[issue25207] ICC compiler warnings

[Roundup Robot]

Roundup Robot added the comment:

New changeset a138a1131bae by Victor Stinner in branch 'default':
Issue #25207, #14626: Fix ICC compiler warnings in posixmodule.c
https://hg.python.org/cpython/rev/a138a1131bae

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[issue14626] os module: use keyword-only arguments for dir_fd and nofollow to reduce function count

[Roundup Robot]

Roundup Robot added the comment:

New changeset a138a1131bae by Victor Stinner in branch 'default':
Issue #25207, #14626: Fix ICC compiler warnings in posixmodule.c
https://hg.python.org/cpython/rev/a138a1131bae

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[issue25207] ICC compiler warnings

[STINNER Victor]

New submission from STINNER Victor:

http://buildbot.python.org/all/builders/x86-64%20Windows%20Server%202012R2%20ICC%203.x/builds/109/steps/compile/logs/warnings%20%2832%29

 
2>C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj(418,5):
 warning : Toolset Intel C++ Compiler 16.0 is not used for official builds. 
Your build may have errors or incompatibilities.
 2>..\Modules\posixmodule.c(4612): warning #3199: "defined" is always false 
in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Modules\posixmodule.c(4612): warning #3199: "defined" is always false 
in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Modules\posixmodule.c(4774): warning #3199: "defined" is always false 
in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Modules\posixmodule.c(4774): warning #3199: "defined" is always false 
in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Modules\_winapi.c(1083): warning #1478: function "GetVersion" 
(declared at line 110 of "C:\Program Files (x86)\Windows 
Kits\8.1\Include\um\sysinfoapi.h") was declared deprecated 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Objects\obmalloc.c(841): warning #170: pointer points outside of 
underlying object 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Objects\obmalloc.c(841): warning #170: pointer points outside of 
underlying object 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\PC\winreg.c(885): warning #810: conversion from "void *" to 
"DWORD={unsigned long}" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\PC\msvcrtmodule.c(544): warning #592: variable "st" is used before 
its value is set 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 2>..\Python\sysmodule.c(830): warning #1478: function "GetVersionExA" 
(declared at line 433 of "C:\Program Files (x86)\Windows 
Kits\8.1\Include\um\sysinfoapi.h") was declared deprecated 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
19>..\PC\_msi.c(1035): warning #810: conversion from 
"LPCTSTR={LPCSTR={const CHAR={char} *}}" to "int" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\_msi.vcxproj]
19>..\PC\_msi.c(1036): warning #810: conversion from 
"LPCTSTR={LPCSTR={const CHAR={char} *}}" to "int" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\_msi.vcxproj]
19>..\PC\_msi.c(1037): warning #810: conversion from 
"LPCTSTR={LPCSTR={const CHAR={char} *}}" to "int" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\_msi.vcxproj]
19>..\PC\_msi.c(1038): warning #810: conversion from 
"LPCTSTR={LPCSTR={const CHAR={char} *}}" to "int" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\_msi.vcxproj]
19>..\PC\_msi.c(1039): warning #810: conversion from 
"LPCTSTR={LPCSTR={const CHAR={char} *}}" to "int" may lose significant bits 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\_msi.vcxproj]
 
C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj(418,5):
 warning : Toolset Intel C++ Compiler 16.0 is not used for official builds. 
Your build may have errors or incompatibilities.
 ..\Modules\posixmodule.c(4612): warning #3199: "defined" is always 
false in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 ..\Modules\posixmodule.c(4612): warning #3199: "defined" is always 
false in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 ..\Modules\posixmodule.c(4774): warning #3199: "defined" is always 
false in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 ..\Modules\posixmodule.c(4774): warning #3199: "defined" is always 
false in a macro expansion in Microsoft mode 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 ..\Modules\_winapi.c(1083): warning #1478: function "GetVersion" 
(declared at line 110 of "C:\Program Files (x86)\Windows 
Kits\8.1\Include\um\sysinfoapi.h") was declared deprecated 
[C:\Users\buildbot\buildarea\3.x.intel-windows-icc\build\PCbuild\pythoncore.vcxproj]
 ..\Objects\obmalloc.c(841): warning #170: pointer point

[issue23630] support multiple hosts in create_server/start_server

[Roundup Robot]

Roundup Robot added the comment:

New changeset 42e7334e0e4c by Victor Stinner in branch '3.4':
Issue #23630: Fix test_asyncio on Windows
https://hg.python.org/cpython/rev/42e7334e0e4c

New changeset 840942a3f6aa by Victor Stinner in branch '3.5':
Merge 3.4 (Issue #23630, fix test_asyncio)
https://hg.python.org/cpython/rev/840942a3f6aa

New changeset 1f979a573f8d by Victor Stinner in branch 'default':
Merge 3.5 (Issue #23630, fix test_asyncio)
https://hg.python.org/cpython/rev/1f979a573f8d

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[issue25114] asyncio: add ssl_object extra info

[Roundup Robot]

Roundup Robot added the comment:

New changeset 32e3a9e46f70 by Victor Stinner in branch '3.4':
Issue #25114: Fix test_asyncio
https://hg.python.org/cpython/rev/32e3a9e46f70

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[issue25206] PEP 498: Minor mistakes/outdateness

[Arfrever Frehtes Taifersar Arahesis]

New submission from Arfrever Frehtes Taifersar Arahesis:

"""
For example, this code:

 f'abc{expr1:spec1}{expr2!r:spec2}def{expr3:!s}ghi'

Might be be evaluated as:

 'abc' + format(expr1, spec1) + format(repr(expr2)) + 'def' + 
format(str(expr3)) + 'ghi'
"""

format(repr(expr2)) should be format(repr(expr2), spec2)



"""
>>> f'x={x'
  File "", line 1
SyntaxError: missing '}' in format string expression
"""

Actually implemented exception message is:
SyntaxError: f-string: expecting '}'



"""
>>> f'x={!x}'
  File "", line 1
!x
^
SyntaxError: invalid syntax
"""

Actually implemented exception message is:
SyntaxError: f-string: invalid conversion character: expected 's', 'r', or 'a'

--
assignee: eric.smith
messages: 251250
nosy: Arfrever, eric.smith
priority: normal
severity: normal
status: open
title: PEP 498: Minor mistakes/outdateness

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Alecsandru Patrascu]

Alecsandru Patrascu added the comment:

The patch does not display dots, as they are not that intuitive and users 
cannot make an estimate of the time left or the position in the training phase. 
Instead, the regrtest.py, will display the progress as [X/Y], like the default 
version, but without any warnings, failed tests, skipped tests. Also the start 
and end report are suppressed.

I don't understand what do you mean by "keyword-only parameter". I added a new 
flag (-P/--pgo) and propagated it along all the functions that need it. Another 
approach would have been to use a global variable, lets say "pgo" and use it 
directly. This is closer to what you had in mind?

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[issue25205] setattr accepts invalid identifiers

[W deW]

New submission from W deW:

An identifier is defined by 

identifier ::=  (letter|"_") (letter | digit | "_")*

setattr accepts identifiers that do not meet this criterion:


Python 2.7.8 (default, Jun 30 2014, 16:08:48) [MSC v.1500 64 bit (AMD64)] on 
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> class C(object): pass
...
>>> o=C()
>>> setattr(o, "$$$", True)
>>>  dir(o)
['$$$', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', 
'__getattribute__', '__hash__', '__in
module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', 
'__sizeof__', '__str__', '__su
__', '__weakref__']
>>> o.$$$
  File "", line 1
o.$$$
  ^
SyntaxError: invalid syntax
>>>


--
components: Interpreter Core
messages: 251248
nosy: W deW
priority: normal
severity: normal
status: open
title: setattr accepts invalid identifiers
type: behavior
versions: Python 2.7

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[issue25204] Confusing (?) warning when run deprecated module as script

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25204] Confusing (?) warning when run deprecated module as script

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

$ ./python -Wa Lib/imp.py
sys:1: PendingDeprecationWarning: the imp module is deprecated in favour of 
importlib; see the module's documentation for alternative uses

"sys:1:" is output when the stacklevel argument is larger then the deep of the 
stack.

Following patch stops raising just below the surface.

$ ./python -Wa Lib/imp.py
Lib/imp.py:33: PendingDeprecationWarning: the imp module is deprecated in 
favour of importlib; see the module's documentation for alternative uses
  PendingDeprecationWarning, stacklevel=2)

However I'm not sure that the current behavior is incorrect.

--
components: Extension Modules, Library (Lib)
files: warnings_surface.patch
keywords: patch
messages: 251247
nosy: brett.cannon, eric.snow, haypo, ncoghlan, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Confusing (?) warning when run deprecated module as script
Added file: http://bugs.python.org/file40536/warnings_surface.patch

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[issue25156] shutil.copyfile should internally use os.sendfile when possible

[desbma]

desbma added the comment:

Additional advantage of calling sendfile from shutil.copyfile: other fonctions 
in shutil module would automatically benefit from the use of senfile because 
they call copyfile directly (copy, copy2) or indirectly (copytree).

So for example, the performance of shutil.copytree should be improved for free 
for directory trees containing big files.

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[Lauri Kajan]

Lauri Kajan added the comment:

Thanks for these.
I'll see what I could do to upgrade our python version.

Sorry for not finding the old issue. Didn't find the right search terms.

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[issue24779] Python/ast.c: decode_unicode is never called with rawmode=True

[Eric V. Smith]

Changes by Eric V. Smith :


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

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[issue24779] Python/ast.c: decode_unicode is never called with rawmode=True

[Roundup Robot]

Roundup Robot added the comment:

New changeset 5230115de64d by Eric V. Smith in branch 'default':
Issue #24779: Remove unused rawmode parameter to unicode_decode.
https://hg.python.org/cpython/rev/5230115de64d

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nosy: +python-dev

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Brett Cannon]

Brett Cannon added the comment:

I left some comments on the Python 3.6 version of the patch. I don't know if we 
should apply such a change to Python 2.7 or 3.5, though, as it is a new feature 
of regrtest and thus runs the risk of breaking stuff. Then again, we have said 
that anything in the test package has not backwards-compatibility guarantees.

--

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[issue23972] Asyncio reuseport

[STINNER Victor]

STINNER Victor added the comment:

Hum, the latest patch was not reviewed yet :-(

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nosy: +ysionneau

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[issue23630] support multiple hosts in create_server/start_server

[STINNER Victor]

STINNER Victor added the comment:

I pushed the change to Python 3.4, 3.5, 3.6 and asyncio at Github.

Thanks Yann for your nice enhancement of asyncio! It put your name in CPython 
"acks" and asyncio author list.

I modified the patch a little bit (3 lines), how the hosts variable was 
initialized. That's all :-)

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

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[issue23630] support multiple hosts in create_server/start_server

[Roundup Robot]

Roundup Robot added the comment:

New changeset 682623e3e793 by Victor Stinner in branch '3.4':
Issue #23630, asyncio: host parameter of loop.create_server() can now be a
https://hg.python.org/cpython/rev/682623e3e793

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[issue25203] Incorrect handling MemoryError in readline.set_completer_delims

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

MemoryError raised in readline.set_completer_delims() turns the readline 
library to incorrect state.

$ (ulimit -v 20; ./python;)
Python 3.6.0a0 (default:e33b4c18af59+, Sep 17 2015, 17:05:17) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import readline
>>> readline.get_completer_delims()
' \t\n`~!@#$%^&*()-=+[{]}\\|;:\'",<>/?'
>>> readline.set_completer_delims(' '*10**8)
Traceback (most recent call last):
  File "", line 1, in 
MemoryError
>>> readline.get_completer_delims()
Traceback (most recent call last):
  File "", line 1, in 
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xe4 in position 1: invalid 
continuation byte

Proposed patch fixes the issue.

--
components: Extension Modules
files: readline_set_completer_delims.patch
keywords: patch
messages: 251239
nosy: serhiy.storchaka, twouters
priority: normal
severity: normal
stage: patch review
status: open
title: Incorrect handling MemoryError in readline.set_completer_delims
type: behavior
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6
Added file: http://bugs.python.org/file40535/readline_set_completer_delims.patch

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[issue25114] asyncio: add ssl_object extra info

[STINNER Victor]

STINNER Victor added the comment:

I pushed my change to Python 3.4, 3.6 and 3.6 and Github.

The strange thing is the put a different "versionchanged" tag in the doc: 
version 3.4.4 in the 3.4 branch, version 3.5.1 in the 3.5 and default branches.

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

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[issue25114] asyncio: add ssl_object extra info

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2f451651038c by Victor Stinner in branch '3.5':
Issue #25114: Adjust versionchanged in the doc
https://hg.python.org/cpython/rev/2f451651038c

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[issue25114] asyncio: add ssl_object extra info

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


--
title: asynico: add ssl_object extra info -> asyncio: add ssl_object extra info

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[issue25114] asynico: add ssl_object extra info

[Roundup Robot]

Roundup Robot added the comment:

New changeset d7859e7e7071 by Victor Stinner in branch '3.4':
Issue #25114, asyncio: add ssl_object extra info to SSL transports
https://hg.python.org/cpython/rev/d7859e7e7071

--
nosy: +python-dev

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[issue18967] Find a less conflict prone approach to Misc/NEWS

[Brett Cannon]

Brett Cannon added the comment:

It should be mentioned in this issue that the core-workflow mailing list 
decided on having NEWS entries being attached to the related issue in the issue 
tracker. This was then presented to python-committers and no one objected to 
the idea.

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[eryksun]

eryksun added the comment:

Lauri changed the version from 3.4 to 3.2, and I was able to reproduce the 
problem in 3.2.5:

C:\Temp>py -3.2 --version
Python 3.2.5
C:\Temp>py -3.2 nospace.py
removing fill.txt
Traceback (most recent call last):
  File "nospace.py", line 8, in 
n = f.write(b"\0")
IOError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "nospace.py", line 8, in 
n = f.write(b"\0")
IOError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "nospace.py", line 12, in 
os.remove(fill)
WindowsError: [Error 32] The process cannot access the file because it is 
being used by another process: 'T:\\fill.txt'

It's a sharing violation, since the file handle isn't closed and wasn't opened 
with FILE_SHARE_DELETE.

There's no problem in 3.4 or 3.5 since it properly closes the file handle even 
if flush() fails:

C:\Temp>py -3.4 --version
Python 3.4.3
C:\Temp>py -3.4 nospace.py
removing fill.txt

C:\Temp>py -3.5 --version
Python 3.5.0
C:\Temp>py -3.5 nospace.py
removing fill.txt

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[issue25114] asynico: add ssl_object extra info

[Yury Selivanov]

Yury Selivanov added the comment:

the patch lgtm

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[STINNER Victor]

STINNER Victor added the comment:

@Lauri: What is your Python version? Can you retry your test with Python 3.5?

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[Stefan Krah]

Stefan Krah added the comment:

Regarding volatile: gcc/clang seem to honor *some* changes to
the control word. At least in libmpdec both compilers have
always left the settings 80bit-prec/ROUND_CHOP intact, even
though it's not the default.

Let's rewrite Python in asm to avoid these issues. :)

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[Zachary Ware]

Changes by Zachary Ware :


--
superseder:  -> file descriptor not being closed with context manager on 
IOError when device is full

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[Stefan Krah]

Stefan Krah added the comment:

Ok, clang does not support it either:

https://llvm.org/bugs/show_bug.cgi?id=10409

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[eryksun]

eryksun added the comment:

See issue 16597. This wasn't fixed for 3.2, so it won't close the file if 
flush() fails. You'll either have to work around this or upgrade to 3.3+.

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resolution:  -> out of date
stage:  -> resolved
status: open -> closed

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[STINNER Victor]

STINNER Victor added the comment:

FYI in Python/pytime.c, I put a lot of "volatile double" when tests started to 
fail on some platforms. It's inefficient, but it's easier than teaching how to 
disable optimizations on each different compiler :-p

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[Stefan Krah]

Stefan Krah added the comment:

In theory we should set FENV_ACCESS whenever the control word is
changed (C99):

"If part of a program tests floating-point status flags, sets
floating-point control modes, or runs under non-default mode
settings, but was translated with the state for the FENV_ACCESS
pragma "off", the behavior is undefined."


In practice gcc ignores the pragma, icc and cl.exe use it, not
sure about clang.

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[issue25124] No single .msi available for 3.5 release

[Stefan Krah]

Changes by Stefan Krah :


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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[Lauri Kajan]

Changes by Lauri Kajan :


--
versions: +Python 3.2 -Python 3.4

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[issue25184] "python -m pydoc -w" fails in nondecodable directory

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

We could use url = urllib.parse.quote_from_bytes(os.fsencode(path)) on Posix 
systems, but I heart that on Windows os.fsencode() can irreversible spoil file 
names (replace unencodable characters with '?'). On other side, I'm not sure 
that Windows unicode path can't contain lone surrogates. In this case we should 
use the 'surrogatepass' error handler (at least it allow to restore the path in 
principle).

Here is a patch that tries to handle undecodable and unencodable paths. Need to 
test it on Windows.

--
keywords: +patch
stage:  -> patch review
Added file: http://bugs.python.org/file40534/pydoc_undecodabple_path.patch

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[STINNER Victor]

Changes by STINNER Victor :


--
title: with-statement doesn't release file handle after exception -> Windows: 
with-statement doesn't release file handle after exception on "No space left on 
device" error

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[issue25202] Windows: with-statement doesn't release file handle after exception on "No space left on device" error

[STINNER Victor]

Changes by STINNER Victor :


--
components: +Windows
nosy: +paul.moore, steve.dower, tim.golden, zach.ware

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[issue25202] with-statement doesn't release file handle after exception

[Lauri Kajan]

New submission from Lauri Kajan:

Hi all,

I found out that handle to a file opened with with-statement is not released in 
all cases.

I'm trying to delete a file when space on a disk is filled (0 bit left) by 
writing this file. I catch the IOError 28 to figure this out.
I write the file within the with-statement that is wrapped with try except. In 
the except block I try to delete the file but the handle to the file is not 
released.

In the following code fill-file can't be deleted because the file is still open.
I have described the problem also in stackoverflow [1].

# I recommend filling the disk almost full with some better tool.
import os
import errno

fill = 'J:/fill.txt'
try:
with open(fill, 'wb') as f:
while True:
n = f.write(b"\0")
except IOError as e:
if e.errno == errno.ENOSPC:
os.remove(fill)

This gives the following traceback:

Traceback (most recent call last):
  File "nospacelef.py", line 8, in 
n = f.write(b"\0")
IOError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "nospacelef.py", line 8, in 
n = f.write(b"\0")
IOError: [Errno 28] No space left on device

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "nospacelef.py", line 11, in 
os.remove(fill)
WindowsError: [Error 32] The process cannot access the file because it is being 
used by another process: 'J:/fill.txt'



[1] 
http://stackoverflow.com/questions/32690018/cant-delete-a-file-after-no-space-left-on-device

--
components: IO
messages: 251225
nosy: Lauri Kajan
priority: normal
severity: normal
status: open
title: with-statement doesn't release file handle after exception
type: behavior
versions: Python 3.4

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[issue25047] xml.etree.ElementTree encoding declaration should be capital ('UTF-8') rather than lowercase ('utf-8')

[Simeon Warner]

Simeon Warner added the comment:

Path looks fine and seems to work as expected -- Simeon

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[issue25047] xml.etree.ElementTree encoding declaration should be capital ('UTF-8') rather than lowercase ('utf-8')

[Simeon Warner]

Simeon Warner added the comment:

s/Path/Patch/

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[issue24657] CGIHTTPServer module discard continuous '/' letters from params given by GET method.

[takayuki]

takayuki added the comment:

This bug seems to remain in Python 3.5.0.

How to reproduce:

1. Save the attached cgitest.py into cgi-bin directory and changed it to 
executable file by "chmod +x cgitest.py"

2. Run CGIHTTPRequestHandler
[GCC 5.1.1 20150618 (Red Hat 5.1.1-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import http.server
>>> http.server.test(HandlerClass=http.server.CGIHTTPRequestHandler)

3. Visit http://localhost:8000/cgi-bin/cgitest.py by any browser.

4. Input "a/b/c//d//e///f///g" to form named "p".

5. The continuous slash letters are trimed and "a/b/c/d/e/f/g" is given to 
cgitest.py.

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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25047] xml.etree.ElementTree encoding declaration should be capital ('UTF-8') rather than lowercase ('utf-8')

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue24520] Stop using deprecated floating-point environment functions on FreeBSD

[STINNER Victor]

STINNER Victor added the comment:

It looks like fpsetmask() was deprecated since many years, and that 
fedisableexcept() is available since FreeBSD 5.3. Since we try to support 
FreeBSD 9, it's fine to drop support of FreeBSD < 5.3.

I'm concerned by the "CAVEATS" section below. Should we put "#pragma STDC 
FENV_ACCESS ON" in all .c file using a C double?

@skrah: I saw this pragma in Modules/_decimal/libmpdec/mpdecimal.c. Any idea if 
applying this patch is fine?

Maybe we can start by applying it to the default branch?

If this patch is required to support arm64, I think that it's ok to apply it to 
2.7, 3.4 and 3.5 since we still accept changes to fix platform compatibility 
issues.

http://www.unix.com/man-page/freebsd/3/fpsetmask/
---
DESCRIPTION
 The routines described herein are deprecated.  New code should use the 
functionality provided by fenv(3).
---

http://www.unix.com/man-page/freebsd/3/fenv/
---
HISTORY
 The  header first appeared in FreeBSD 5.3.  It supersedes the 
non-standard routines defined in  and documented in fpgetround(3).

CAVEATS
 The FENV_ACCESS pragma can be enabled with
   #pragma STDC FENV_ACCESS ON
---

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[issue25193] itertools.accumulate should have an optional initializer argument

[Mark Dickinson]

Mark Dickinson added the comment:

A couple of observations:

1. Haskell's (rough) equivalents would be `mapAccumL` and `mapAccumR`, which do 
take an initializer [1].  The signature for both functions is something like:

(acc -> b -> (acc, c)) -> acc -> [b] -> (acc, [c]).

2. In the particular case of NumPy, I've found np.cumsum a pain to use on 
multiple occasions because of the missing left-hand point in the result.  
Grepping through a couple of recent (real-world) projects produces code like:

summed_widths = cumsum(hstack(([0], widths[:-1])))

and

cumulative_segments = np.insert(np.cumsum(segment_lengths), 0, 0.0)

where that extra missing value is having to be inserted either in the input 
list or the output list. OTOH, none of those projects is natural fit for 
itertools, so changing itertools wouldn't help them directly.

[1] https://www.haskell.org/hoogle/?hoogle=mapAccumL

--
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[issue25186] Don't duplicate _verbose_message in importlib._bootstrap and _bootstrap_external

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25184] "python -m pydoc -w" fails in nondecodable directory

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25122] test_eintr randomly fails on FreeBSD

[Roundup Robot]

Roundup Robot added the comment:

New changeset 3184c43627f5 by Victor Stinner in branch '3.5':
Issue #25122: test_eintr: the FreeBSD fix will be released in FreeBSD 10.3
https://hg.python.org/cpython/rev/3184c43627f5

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[issue25183] python -m inspect --details fails in nondecodable directory

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25185] Inconsistency between venv and site

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25181] Tests failed in nondecodable directory

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue25182] python -v crashes in nonencodable directory

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue22729] `wait` and `as_completed` depend on private api

[Ben Mather]

Ben Mather added the comment:

Sorry for slow response.  I completely missed your reply.

I was working on a project that used a concurrent.futures thread pool but also 
needed to listen to responses from a chip-and-pin card reader.

Payment sessions operated in three phases:
  - check with card reader that payment is possible
  - save payment to database as if it has happened (always best to undercharge 
in the case of an error)
  - ask the payment provider to commit the payment

Up until confirmation is received, it is entirely possible to cancel the 
session.
Once confirmation is received the session starts trying to commit and you can 
only really wait for it to finish and then roll back (or break everything).

This maps pretty well to the interface of future (though with very different 
plumbing and with work happening before cancellation stops working) and it made 
sense to try to write it so that it could interoperate with futures 
representing tasks running on the thread pool.

I tried to add a method which returned a plain concurrent.futures.Future object 
but couldn't find a way to hook into the cancel method without introducing 
loads of race conditions.

Really it just seemed wrong that I had an object that quacked like a duck but 
wasn't a duck because real ducks communicated over a hidden side channel.

The card reader library is open source and mostly functional.  The class is in:

https://github.com/bwhmather/python-payment-terminal/blob/develop/payment_terminal/drivers/bbs/payment_session.py

I'm sure there are other places where this sort of interoperability would be 
useful.

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[issue25194] Register of Financial Interests for core contributors

[Ezio Melotti]

Ezio Melotti added the comment:

> Wouldn't it be better to put the emphasis on a) core devs who do this 
> in their free time, b) core devs who would be available for hired work, 
> and c) showing off which companies indirectly support Python via 
> employing core devs and giving them time to do core dev work as part of 
> their job ?

I still think that a) and c) should be separate from b).  Core devs might be 
contributing in their free time (i.e. a) or as part as their job (i.e. c), and 
on top of this they might or might not be available for hired work (i.e. b).

> Essentially replacing "disclosure" and "financial interests" with 
> "motivation" and "support".

Agreed.  Perhaps even "affiliation" could be used, even though that doesn't 
imply that the affiliated company supports CPython.

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[issue6331] Add unicode script info to the unicode database

[Berker Peksag]

Changes by Berker Peksag :


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[issue6331] Add unicode script info to the unicode database

[Mark Lawrence]

Changes by Mark Lawrence :


--
versions: +Python 3.6 -Python 3.4

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[issue25194] Register of Financial Interests for core contributors

[Marc-Andre Lemburg]

Marc-Andre Lemburg added the comment:

I like the idea, but the phrasings "disclosure" and "financial interests" sound 
too negative, IMO.

Wouldn't it be better to put the emphasis on a) core devs who do this in their 
free time, b) core devs who would be available for hired work, and c) showing 
off which companies indirectly support Python via employing core devs and 
giving them time to do core dev work as part of their job ?

Essentially replacing "disclosure" and "financial interests" with "motivation" 
and "support".

See e.g. the list of supporting companies we have for infrastructure 
(https://www.python.org/psf/league/) as example in a different area.

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Alecsandru Patrascu]

Alecsandru Patrascu added the comment:

I've added the patches for Python default and 2.7. To apply them please use the 
command "hg import --no-commit". PGO flag is implemented for both variants 
(single and multi process). Default in profile-opt will be single process.

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Alecsandru Patrascu]

Changes by Alecsandru Patrascu :


--
keywords: +patch
Added file: http://bugs.python.org/file40532/regrtest_27.patch

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[issue25188] regrtest.py improvement for Profile Guided Optimization builds

[Alecsandru Patrascu]

Changes by Alecsandru Patrascu :


Added file: http://bugs.python.org/file40533/regrtest_36.patch

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[issue6331] Add unicode script info to the unicode database

[Cosimo Lupo]

Cosimo Lupo added the comment:

I would very much like a `script()` function to be added to the built-in 
unicodedata module.
What's the current status of this issue?
Thanks.

Cosimo

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[issue25184] "python -m pydoc -w" fails in nondecodable directory

[STINNER Victor]

STINNER Victor added the comment:

Technically, I think that it's possible to put bytes in an URL using %HH 
format. I didn't check if we can retrieve the "raw bytes".

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[issue25184] "python -m pydoc -w" fails in nondecodable directory

[Martin Panter]

Martin Panter added the comment:

Seems to be caused by the Python directory being non-decodable; the current 
working directory does not matter. What is going on is “pydoc” is trying to 
make a link to a module’s source code, such as

/usr/lib/python3.4/pydoc.py

For non-decodable paths, the following would work in Firefox:

/home/serhiy/py/cpy�thon-3.5/Lib/pydoc.py

but since URL percent encoding already uses UTF-8, this scheme isn’t foolproof 
(e.g. a UTF-8 sequence when the locale is ASCII would be ambiguous). A simpler 
and more consistent way forward would be an error handler substituting 
something like this, decoding the surrogate escape code with the “replace” 
handler, with the HTML link suppressed:

/home/serhiy/py/cpy�thon-3.5/Lib/pydoc.py (invalid filename encoding)

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