[issue31440] wrong default module search path in help message

[Xiang Zhang]

Xiang Zhang added the comment:

Not sure about Windows. _get_path() looks to me is used for user site-packages. 
getsitepackages() doesn't do the same and seems matching the current message, 
also the OS2 branch in py2. Let's consult Windows guys.

--
nosy: +eryksun, gauravbackback, steve.dower, zach.ware

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[issue31484] Cache single-character strings outside of the Latin1 range

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

> > The cache of size 2 x 256 slots can increase memory consumption by 50 KiB
> > in worst case, 2 x 1024 -- by 200 KiB.
> How much is this compared to the total usage?

For Python interpreter VmSize: 31784 kB, VmRSS: 7900 kB.

The cache doesn't affect performance of encode/decode since codecs are written 
in C. But it affects text processing written in Python. The more complex text 
processing code the less relative difference.

$ ./python -m perf timeit --compare-to ./python0 -s 'import html; s = 
open("36248-0.txt").read()' -- 'html.escape(s)'
Mean +- std dev: [python0] 2.59 ms +- 0.06 ms -> [python] 1.58 ms +- 0.04 ms: 
1.64x faster (-39%)

$ ./python -m perf timeit --compare-to ./python0 -s 'import re; s = 
open("36248-0.txt").read()' -- 're.escape(s)'
Mean +- std dev: [python0] 45.9 ms +- 1.3 ms -> [python] 44.0 ms +- 1.4 ms: 
1.04x faster (-4%)

$ ./python -m perf timeit --compare-to ./python0 -s 'import fnmatch; s = 
open("36248-0.txt").read()' -- 'fnmatch.translate(s)'
Mean +- std dev: [python0] 448 ms +- 9 ms -> [python] 435 ms +- 9 ms: 1.03x 
faster (-3%)

$ ./python -m perf timeit --compare-to ./python0 -s 'import re, sre_compile; s 
= re.escape(open("36248-0.txt").read())' -- 'sre_compile.compile(s)'
Mean +- std dev: [python0] 1.44 sec +- 0.02 sec -> [python] 1.41 sec +- 0.02 
sec: 1.01x faster (-1%)

$ ./python -m perf timeit --compare-to ./python0 -s 'import textwrap; s = 
open("36248-0.txt").read()' -- 'textwrap.wrap(s)'
Mean +- std dev: [python0] 208 ms +- 2 ms -> [python] 207 ms +- 2 ms: 1.01x 
faster (-1%)

In real-word applications I expect hundredths and thousandths fractions of 
percent. This effect can't be measured in any sane way.

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[issue31490] assertion failure in ctypes in case an _anonymous_ attr appears outside _fields_

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset 30b61b51e05d2d43e8e2e783b0a9df738535423b by Serhiy Storchaka 
(Oren Milman) in branch 'master':
bpo-31490: Fix an assertion failure in ctypes in case an _anonymous_ attr is 
defined only outside _fields_. (#3615)
https://github.com/python/cpython/commit/30b61b51e05d2d43e8e2e783b0a9df738535423b


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[issue31490] assertion failure in ctypes in case an _anonymous_ attr appears outside _fields_

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
versions: +Python 2.7, Python 3.6

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[issue31351] ensurepip discards pip's return code which leads to broken venvs

[Igor Filatov]

Changes by Igor Filatov :


--
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pull_requests: +3615
stage:  -> patch review

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[issue31443] Possibly out of date C extension documentation

[Romuald Brunet]

Romuald Brunet added the comment:

I'm not sure this is relevant, but I've just made a simple test on Windows (7) 
with my C extension using { … .tp_new = PyType_GenericNew } and the compiler 
did not complain (also the code worked as expected)

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[issue31443] Possibly out of date C extension documentation

[Stefan Krah]

Stefan Krah added the comment:

PyType_GenericNew() should be in libpython, so indeed the example in the docs 
seems a bit odd to me.

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[issue27391] server_hostname should only be required when checking host names

[Jim Fulton]

Jim Fulton added the comment:

OMG, >1year. :)

This was always a minor issue.  I still think the current asyncio behavior is 
dumb, but whatever.

FWIW, I tripped on this when adding SSL support to ZEO, which is a 
client-server *database* protocol used by ZODB, having nothing to do with the 
Web. In this context, the client and server are well known to each other and 
share certs.

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status: open -> closed

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[issue31346] Prefer PROTOCOL_TLS_CLIENT/SERVER

[Christian Heimes]

Changes by Christian Heimes :


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

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[issue31386] Make return types of wrap_bio and wrap_socket customizable

[Christian Heimes]

Changes by Christian Heimes :


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

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[issue31487] Improve f-strings documentation wrt format specifiers

[Mariatta Wijaya]

Changes by Mariatta Wijaya :


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[issue31487] Improve f-strings documentation wrt format specifiers

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset 63c591c0b0b57870a606e8edc59afe6264e7504d by Mariatta in branch 
'master':
bpo-31487: Update F-strings doc example (GH-3627)
https://github.com/python/cpython/commit/63c591c0b0b57870a606e8edc59afe6264e7504d


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[issue31487] Improve f-strings documentation wrt format specifiers

[Roundup Robot]

Changes by Roundup Robot :


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[issue31487] Improve f-strings documentation wrt format specifiers

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset 4f6bae9677c0e5398e64c503fd3c19cae94567da by Mariatta (Miss 
Islington (bot)) in branch '3.6':
bpo-31487: Update F-strings doc example (GH-3627) (GH-3628)
https://github.com/python/cpython/commit/4f6bae9677c0e5398e64c503fd3c19cae94567da


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[issue31496] IDLE: test_configdialog failed

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

$ ./python -m test -uall test_idle 
Run tests sequentially
0:00:00 load avg: 1.19 [1/1] test_idle
invalid command name "140662890299080timer_event"
while executing
"140662890299080timer_event"
("after" script)
test test_idle failed -- Traceback (most recent call last):
  File "/home/serhiy/py/cpython/Lib/idlelib/idle_test/test_configdialog.py", 
line 417, in test_highlight_target_text_mouse
click_it(start_index)
  File "/home/serhiy/py/cpython/Lib/idlelib/idle_test/test_configdialog.py", 
line 401, in click_it
x, y, dx, dy = hs.bbox(start)
TypeError: 'NoneType' object is not iterable

test_idle failed

1 test failed:
test_idle

Total duration: 2 sec
Tests result: FAILURE


Maybe this is related to HiDPI display.

On 2.7 the test is passed.

--
assignee: terry.reedy
components: IDLE, Tests
messages: 302369
nosy: serhiy.storchaka, terry.reedy
priority: normal
severity: normal
status: open
title: IDLE: test_configdialog failed
versions: Python 3.7

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[issue31482] random.seed() doesn't work with bytes and version=1

[Roundup Robot]

Changes by Roundup Robot :


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[issue31482] random.seed() doesn't work with bytes and version=1

[Raymond Hettinger]

Raymond Hettinger added the comment:


New changeset 132a7d7cdbc7cb89fa1c1f4e8192241c3d68f549 by Raymond Hettinger in 
branch 'master':
bpo-31482:  Missing bytes support for random.seed() version 1 (#3614)
https://github.com/python/cpython/commit/132a7d7cdbc7cb89fa1c1f4e8192241c3d68f549


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[issue31482] random.seed() doesn't work with bytes and version=1

[Raymond Hettinger]

Changes by Raymond Hettinger :


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

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[issue31484] Cache single-character strings outside of the Latin1 range

[Xiang Zhang]

Xiang Zhang added the comment:

I run the patch against a toy NLP application, cutting words from Shui Hu Zhuan 
provided by Serhiy. The result is not bad, 6% faster. And I also count the hit 
rate, 90% hit cell 0， 4.5 hit cell 1, 5.5% miss. I also increase the cache size 
to 1024 * 2. Although the hit rate increases to 95.4%, 2.1%, 2.4%, it's still 
6% difference.

So IMHO this patch could hardly affect that *much* real-world applications, 
better or worse. I couldn't recall clearly the implementation of unicode but 
why can't we reuse the latin1 cache when we use this bmp cache? And then to 
avoid the chars' low bits conflicting with ASCII chars' low bits we have to 
introduce the mini-LRU-cache, which is not that easily understandable.

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[issue31381] Unable to read the project file "pythoncore.vcxproj".

[Denis Osipov]

Denis Osipov added the comment:

Fixed in PR 3397 (I guess).

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[issue31497] Add _PyType_Name()

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

Proposed PR adds a helper function _PyType_Name() which returns the last 
component of tp_name after dot. This allows to avoid duplication of the code.

I'm going to use this helper in more places in future for getting rid of 
hardcoded type names (issue27541, issue21861).

--
components: Interpreter Core
messages: 302373
nosy: serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Add _PyType_Name()
type: enhancement
versions: Python 3.7

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[issue31497] Add _PyType_Name()

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
keywords: +patch
pull_requests: +3619

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[issue27541] Repr of collection's subclasses

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
keywords: +patch
pull_requests: +3620
stage:  -> patch review

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[issue31498] Default values for zero in time.strftime()

[Denis Osipov]

New submission from Denis Osipov:

Now default values for zero in time.strftime returns string with day of week 
value 1:

>>> time.strftime("%Y %m %d %H %M %S %w %j", (2000,)+(0,)*8)
'2000 01 01 00 00 00 1 001'

while 2000-01-01 is Saturday (=6th day of week).

Now each illegal value (day of month < 1 etc.) are forced to a correct one (by 
the way why now day of week isn't 0=Sunday and forced to 1). Maybe strftime 
also should force day of week to according to the date (%Y %m %d) if it's given.

>>> time.strftime("%Y %m %d %H %M %S %w %j", (2000,)+(0,)*8)
'2000 01 01 00 00 00 6 001'

--
components: Interpreter Core
messages: 302374
nosy: denis-osipov
priority: normal
severity: normal
status: open
title: Default values for zero in time.strftime()
type: behavior
versions: Python 3.6, Python 3.7

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[issue27541] Repr of collection's subclasses

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
dependencies: +Add _PyType_Name()
versions: +Python 3.7 -Python 3.6

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[issue31499] ElementTree crash with new expat

[Stefan Behnel]

New submission from Stefan Behnel:

I'm seeing crashes in the latest Py3.7 when I run this test (taken from lxml's 
compatibility test suite):

etree = xml.etree.ElementTree

def test_feed_parser_error_position(self):
ParseError = etree.ParseError
parser = XMLParser()
try:
parser.close()
except ParseError:
e = sys.exc_info()[1]
self.assertNotEqual(None, e.code)
self.assertNotEqual(0, e.code)
self.assertTrue(isinstance(e.position, tuple))
self.assertTrue(e.position >= (0, 0))

It crashes in expat/xmlparse.c, line 1464:

1459  for (;;) {
1460BINDING *b = bindings;
1461if (!b)
1462  break;
1463bindings = b->nextTagBinding;
1464FREE(b->uri);// <<< crashes here
1465FREE(b);
1466  }
1467}

Probably related to the new expat version (issue 31170).

--
components: Extension Modules
messages: 302375
nosy: eli.bendersky, haypo, scoder, serhiy.storchaka
priority: normal
severity: normal
status: open
title: ElementTree crash with new expat
type: crash
versions: Python 3.7

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[issue31497] Add _PyType_Name()

[Raymond Hettinger]

Raymond Hettinger added the comment:

+1 This would clean-up the code a bit.

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[issue27541] Repr of collection's subclasses

[Raymond Hettinger]

Raymond Hettinger added the comment:

+1 for changing the cases Serhiy found.   Also, I agree with Serhiy that there 
should be a change for the built-in types that have a literal notation (it has 
been this was forever, hasn't caused any real issues, and changing it now will 
likely break code).

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[issue31496] IDLE: test_configdialog failed

[Terry J. Reedy]

Terry J. Reedy added the comment:

Are you running on Linux or Mac?  What tk version?

About the 'invalid command name' message: PR3622, patching idlelib.codecontext, 
merged to master 13 hours ago, fixed this for me on Windows.  (It added 
CodeContext.__del__.)  Did it fail on your machine or was it not yet merged on 
your machine?

About the test failure.  Hs is a Text with about 14 lines.  The test initially 
executes
hs.see(1.0)
hs.update_idletasks()
hs.bbox(start) means that the tag start is not visible,  which should 
realistically not be possible.  But a quick web search suggests there have been 
problems with HiDPI and tk, and hence tkinter.

I am curious what value of start fails.  Could you run once with 'print(start)' 
added above bbox(start)?

Does inserting the following just before hs.bbox(start) fix the issue?
hs.see(start)
hs.update_idletasks()
If not, we can skip.  Does the following print one or multiple skip messages?
try:
x, y, dx, dy = hs.bbox(start)
except TypeError:
self.skipTest(f'bbox failure with start {start}')

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[issue31475] Bug in argparse - not supporting utf8

[INADA Naoki]

INADA Naoki added the comment:

You reported stack trace on Github pull request.
But discussion should be made here, not in pull request.

As far as reading traceback, your problem is solved already in Python 3.6, by 
PEP 528.

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[issue31497] Add _PyType_Name()

[Serhiy Storchaka]

Serhiy Storchaka added the comment:


New changeset 4ab46d794961491ed185c195d53da7ee6a16e646 by Serhiy Storchaka in 
branch 'master':
bpo-31497: Add private helper _PyType_Name(). (#3630)
https://github.com/python/cpython/commit/4ab46d794961491ed185c195d53da7ee6a16e646


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[issue31499] ElementTree crash with new expat

[Jeremy Kloth]

Changes by Jeremy Kloth :


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[issue31500] IDLE: Tiny font on HiDPI display

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

My new laptop has a HiDPI display (3840x2160). IDLE (as well as other Tk 
applications) looks ugly on it. The font of menu and dialogs is tiny. The font 
used in editor and shell looks normal size. I use Linux with X Window.

It seems to me this issue doesn't have solution. Related links:

https://wiki.tcl.tk/41949
https://core.tcl.tk/tk/tktview/0917069c05e9c354a27c8105a7a22264090b9274
https://stackoverflow.com/questions/34132203/scaling-of-tkinter-gui-in-4k-38402160-resolution

--
assignee: terry.reedy
components: IDLE
files: Screenshot_20170917_213616.png
messages: 302381
nosy: serhiy.storchaka, terry.reedy
priority: normal
severity: normal
status: open
title: IDLE: Tiny font on HiDPI display
type: behavior
versions: Python 2.7, Python 3.6, Python 3.7
Added file: https://bugs.python.org/file47141/Screenshot_20170917_213616.png

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[issue31496] IDLE: test_configdialog failed

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

About the 'invalid command name' message: PR 3622 was not yet merged on your 
machine.

Inserting hs.see(start) just before hs.bbox(start) fixes the issue.

I have added some debug prints. Here are outputs, with and without a fix.

--
Added file: https://bugs.python.org/file47142/failure.txt

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[issue31496] IDLE: test_configdialog failed

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


Added file: https://bugs.python.org/file47143/success.txt

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[issue31497] Add _PyType_Name()

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue31499] ElementTree crash with new expat

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I can't reproduce a crash. Could you please provide a Python script?

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[issue31499] ElementTree crash with new expat

[Stefan Behnel]

Stefan Behnel added the comment:

Sorry, wrong line number. Was using an installed Py3.7, not a fresh build. 
However, my crashing installed version is from September 1st, *before* the 
expat update, which was apparently on September 5th.

With a clean debug build, I get a reproducible crash during shutdown, now with 
the correct line number:

Program received signal SIGSEGV, Segmentation fault.
PyExpat_XML_ParserFree (parser=0xd01a20) at .../Modules/expat/xmlparse.c:1487
1487tagList = tagList->parent;
(gdb) p taglist
No symbol "taglist" in current context.
(gdb) list
1482break;
1483  tagList = freeTagList;
1484  freeTagList = NULL;
1485}
1486p = tagList;
1487tagList = tagList->parent;
1488FREE(p->buf);
1489destroyBindings(p->bindings, parser);
1490FREE(p);
1491  }
(gdb) bt
#0  PyExpat_XML_ParserFree (parser=0xd01a20) at Modules/expat/xmlparse.c:1487
#1  0x7fffeec83517 in xmlparser_gc_clear (self=0x7fffeeeb75d8) at 
Modules/_elementtree.c:3414
#2  xmlparser_dealloc (self=0x7fffeeeb75d8) at Modules/_elementtree.c:3435
#3  0x0041fd40 in frame_dealloc (f=0xd017c8) at 
Objects/frameobject.c:428
#4  0x0044f5e5 in tb_dealloc (tb=0x7632d218) at 
Python/traceback.c:56
#5  0x0049c59d in BaseException_clear (self=0x76567dd8) at 
Objects/exceptions.c:78
#6  SyntaxError_clear (self=0x76567dd8) at Objects/exceptions.c:1381
#7  0x00458104 in delete_garbage (old=, 
collectable=) at Modules/gcmodule.c:759
#8  collect (generation=generation@entry=2, 
n_collected=n_collected@entry=0x7fffd6c8, 
n_uncollectable=n_uncollectable@entry=0x7fffd6d0, nofail=nofail@entry=0) at 
Modules/gcmodule.c:911
#9  0x00458d2b in collect_with_callback (generation=2) at 
Modules/gcmodule.c:1020
#10 PyGC_Collect () at Modules/gcmodule.c:1507
#11 0x00439aaf in Py_FinalizeEx () at Python/pylifecycle.c:1002
#12 0x0043b3d8 in Py_Exit (sts=sts@entry=0) at Python/pylifecycle.c:1953
#13 0x0043f4e8 in handle_system_exit () at Python/pythonrun.c:608
#14 0x0043f94d in handle_system_exit () at Python/pythonrun.c:635
#15 PyErr_PrintEx (set_sys_last_vars=set_sys_last_vars@entry=1) at 
Python/pythonrun.c:618
#16 0x0043fc4a in PyErr_Print () at Python/pythonrun.c:514
#17 0x00441475 in PyRun_SimpleFileExFlags (fp=fp@entry=0x9dc050, 
filename=, closeit=closeit@entry=1, 
flags=flags@entry=0x7fffd8e0) at Python/pythonrun.c:407
#18 0x00441633 in PyRun_AnyFileExFlags (fp=fp@entry=0x9dc050, 
filename=, closeit=closeit@entry=1, 
flags=flags@entry=0x7fffd8e0) at Python/pythonrun.c:83
#19 0x0045666c in run_file (p_cf=0x7fffd8e0, filename=0x9973d0 
L"test.py", fp=0x9dc050) at Modules/main.c:341
#20 Py_Main (argc=argc@entry=6, argv=argv@entry=0x996020) at Modules/main.c:895
#21 0x0041fa2b in main (argc=6, argv=) at 
./Programs/python.c:102

I get it in lxml's test suite runs, will try to reduce it to a test script.

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[issue31499] ElementTree crash while cleaning up ParseError

[Stefan Behnel]

Stefan Behnel added the comment:

Minimal reproducer seems to be this:
--
import xml.etree.ElementTree as etree

def test():
parser = etree.XMLParser()
try:
parser.close()
except etree.ParseError as exc:
e = exc  # must keep local reference!

test()
--

The master gitrev I tested is 132a7d7cdbc7cb89fa1c1f4e8192241c3d68f549

Since this happens during GC and finalisation, it's quite possible that it's 
not a bug in ET per se. It might just be a prematurely cleared reference in 
some tp_clear(), or something like that. (Changing ticket title appropriately.)

--
title: ElementTree crash with new expat -> ElementTree crash while cleaning up 
ParseError

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[issue31443] Possibly out of date C extension documentation

[Stefan Krah]

Stefan Krah added the comment:

FWIW, I've been using

  https://github.com/python/cpython/blob/master/Modules/_decimal/_decimal.c#L689


the static initialization on problematic platforms like Windows and
AIX for years, without any problems.


I'm sure this is valid C, and people here agree:

https://stackoverflow.com/questions/6989107/cant-initialize-static-structure-with-function-pointer-from-another-translation


Perhaps this was an issue on very old IRIX systems or similar?

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[issue31498] Default values for zero in time.strftime()

[Raymond Hettinger]

Changes by Raymond Hettinger :


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nosy: +brett.cannon

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[issue27541] Repr of collection's subclasses

[Raymond Hettinger]

Raymond Hettinger added the comment:

+1 for changing the cases Serhiy found.   Also, I agree with Serhiy that there 
should not be a change for the built-in types that have a literal notation (it 
has been this was forever, hasn't caused any real issues, and changing it now 
will likely break code).

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[issue27541] Repr of collection's subclasses

[Raymond Hettinger]

Changes by Raymond Hettinger :


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[issue31443] Possibly out of date C extension documentation

[Stefan Krah]

Stefan Krah added the comment:

Christian, do you remember which compiler was the reason for the commit

cbf3b5cb76906fba15dbf59a1e83c540a447b907 ?

+   /* Due to cross platform compiler issues the slots must be filled
+* here. It's required for portability to Windows without requiring
+* C++. */
Null_Type.tp_base = &PyBaseObject_Type;
+   Null_Type.tp_new = PyType_GenericNew;
Str_Type.tp_base = &PyUnicode_Type;



I've never had problems with VS 2008 or greater.

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[issue30528] ipaddress.IPv{4,6}Network.reverse_pointer is broken

[Ewoud Kohl van Wijngaarden]

Changes by Ewoud Kohl van Wijngaarden :


--
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pull_requests: +3621
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[issue30528] ipaddress.IPv{4,6}Network.reverse_pointer is broken

[Ewoud Kohl van Wijngaarden]

Ewoud Kohl van Wijngaarden added the comment:

Today I ran into this as well. In the case of IPv6 it's simple to decide what 
should be returned but on the IPv4Network I disagree. My expectation would be 
the domain where I would make the reverse needed. That means for 127.0.0.0/13 
it should be '127.in-addr.arpa'.

I implemented it this way in the linked PR but I'm open to other opinions.

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[issue31501] Operator precedence description for arithmetic operators

[svelankar]

New submission from svelankar:

Description for the operator precedence should read 
"Multiplication, matrix multiplication division, remainder" instead of 

"Multiplication, matrix multiplication, division, floor division, remainder.

Section 6.16. Operator precedence

I feel this would help a new comer to python to instantly figure out what does 
"//" stand for.

--
assignee: docs@python
components: Documentation
messages: 302391
nosy: Mariatta, docs@python, svelankar
priority: normal
severity: normal
status: open
title: Operator precedence  description  for arithmetic operators
versions: Python 3.7

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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Terry J. Reedy]

New submission from Terry J. Reedy:

The askyesno messagebox wrappers, added in #31287, returned None, which is 
interpreted as 'No', instead of the user entry.  With 'Yes' not seen, nothing 
was saved.

The manual tests, once the problem was understood, is to save a new 
theme/keyset and click the delete button twice, clicking No the first time and 
Yes the second time, and see what happens.

Unit testing the current version of askyesno would be difficult since it calls 
messagebox.askyesno(), which returns an answer, and there is no obvious way to 
get a reference to the actual widget, in order to generate simulated key or 
click events.

A long term solution might be to add a new subclass to query.Query, after 
reviewing *it* for ease of testing.

--
assignee: terry.reedy
components: IDLE
messages: 302392
nosy: terry.reedy
priority: high
severity: normal
stage: needs patch
status: open
title: IDLE: Config dialog again deletes custom themes and keysets.
type: behavior
versions: Python 3.6, Python 3.7

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[issue31501] Operator precedence description for arithmetic operators

[svelankar]

Changes by svelankar :


--
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pull_requests: +3623
stage:  -> patch review

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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Terry J. Reedy]

Terry J. Reedy added the comment:

I am not adding a new item because the regression has not been released.

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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
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pull_requests: +3624
stage: needs patch -> patch review

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[issue31287] IDLE configdialog tests: don't modify tkinter.messagebox.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue30928] Copy modified blurbs to idlelib/NEWS.txt

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue30928] Copy modified blurbs to idlelib/NEWS.txt

[Terry J. Reedy]

Terry J. Reedy added the comment:

This should prepare IDLE for 3.6.3 and 3.7.0a1 cutoff tomorrow morning.

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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 0efc7c67a2f8a184e93f9a491305c81ef2e24250 by Terry Jan Reedy in 
branch 'master':
bpo-31502: IDLE Configdialog again deletes custom themes and keysets. (#3634)
https://github.com/python/cpython/commit/0efc7c67a2f8a184e93f9a491305c81ef2e24250


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[issue30928] Copy modified blurbs to idlelib/NEWS.txt

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 55679e0ec76ee3b30ca609948f47bb02a8e0a078 by Terry Jan Reedy in 
branch 'master':
bpo-30928: Update idlelib/NEWS.txt to 2017 Sep 17. (#3635)
https://github.com/python/cpython/commit/55679e0ec76ee3b30ca609948f47bb02a8e0a078


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[issue31287] IDLE configdialog tests: don't modify tkinter.messagebox.

[Roundup Robot]

Changes by Roundup Robot :


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[issue30928] Copy modified blurbs to idlelib/NEWS.txt

[Roundup Robot]

Changes by Roundup Robot :


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[issue31487] Improve f-strings documentation wrt format specifiers

[Martin Panter]

Martin Panter added the comment:

>>> f"{number:#0x}"  # using integer format specifier

It’s not clear what your purpose was adding the above line, but the zero flag 
(0) does nothing because there is no “width” field. I think it could be 
misleading, because it is actually the “#x” codes that generate the “0x” prefix.

If you want to illustrate a minimum width, I suggest something like

>>> f"{number:#06x}"
'0x0400'

or (if the number is never negative)

>>> f"0x{number:04X}"
'0x0400'

Or if you don’t care about the width:

>>> f"{number:#x}"
'0x400'

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[issue31287] IDLE configdialog tests: don't modify tkinter.messagebox.

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 0efc7c67a2f8a184e93f9a491305c81ef2e24250 by Terry Jan Reedy in 
branch 'master':
bpo-31502: IDLE Configdialog again deletes custom themes and keysets. (#3634)
https://github.com/python/cpython/commit/0efc7c67a2f8a184e93f9a491305c81ef2e24250


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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Roundup Robot]

Changes by Roundup Robot :


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[issue31287] IDLE configdialog tests: don't modify tkinter.messagebox.

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 6b4d8ba0971355027b8981a45a0a62ac1ef9a456 by Terry Jan Reedy (Miss 
Islington (bot)) in branch '3.6':
[3.6] bpo-31502: IDLE Configdialog again deletes custom themes and keysets. 
(GH-3634) (#3636)
https://github.com/python/cpython/commit/6b4d8ba0971355027b8981a45a0a62ac1ef9a456


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[issue31502] IDLE: Config dialog again deletes custom themes and keysets.

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 6b4d8ba0971355027b8981a45a0a62ac1ef9a456 by Terry Jan Reedy (Miss 
Islington (bot)) in branch '3.6':
[3.6] bpo-31502: IDLE Configdialog again deletes custom themes and keysets. 
(GH-3634) (#3636)
https://github.com/python/cpython/commit/6b4d8ba0971355027b8981a45a0a62ac1ef9a456


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[issue31501] Operator precedence description for arithmetic operators

[Raymond Hettinger]

Raymond Hettinger added the comment:

This is a reasonable proposal.

--
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versions: +Python 3.6

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[issue31501] Operator precedence description for arithmetic operators

[Roundup Robot]

Changes by Roundup Robot :


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[issue31501] Operator precedence description for arithmetic operators

[Raymond Hettinger]

Raymond Hettinger added the comment:


New changeset 9b47af65375fab9318e88ccb061394a36c8c6c33 by Raymond Hettinger 
(svelankar) in branch 'master':
bpo-31501: Operator precedence  description  for arithmetic operators (#3633)
https://github.com/python/cpython/commit/9b47af65375fab9318e88ccb061394a36c8c6c33


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[issue31501] Operator precedence description for arithmetic operators

[Raymond Hettinger]

Changes by Raymond Hettinger :


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

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[issue30928] Copy modified blurbs to idlelib/NEWS.txt

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 84c89ef4e5086e71e3d9ee65cd3620bf8174c9ac by Terry Jan Reedy (Miss 
Islington (bot)) in branch '3.6':
[3.6] bpo-30928: Update idlelib/NEWS.txt to 2017 Sep 17. (GH-3635) (#3637)
https://github.com/python/cpython/commit/84c89ef4e5086e71e3d9ee65cd3620bf8174c9ac


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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Cody Piersall]

New submission from Cody Piersall:

If a some_module defines __all__, dir(some_module) should only return what is 
in __all__.  This is already a mechanism that Python provides to specify 
module-level APIs.  Currently, dir(some_module) returns 
some_module.__dict__.keys().

The concern with this enhancement is backwards compatibility.  It is 
conceivable that some library's code would be broken with the different return 
value of dir(some_module).  However, it seems unlikely that any code, other 
than tests, depends on the current behavior of dir(some_module).

If __all__ is not defined in some_module, the old behavior is preserved.

--
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nosy: codypiersall
priority: normal
pull_requests: 3631
severity: normal
status: open
title: Enhance dir(module) to be informed by __all__ by updating module.__dir__
type: enhancement
versions: Python 3.7

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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Raymond Hettinger]

Raymond Hettinger added the comment:

I think  change this would be risky and could break code that uses dir() to 
actually know what is in a module.

IIRC, this was discussed when __all__ was introduced. I believe it was decided 
that __all__ would affect from-imports and help() but not dir().  This decision 
has been in place for a long time now and I would expect that people (and 
tools) have come to rely on the current behavior.

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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Terry J. Reedy]

Terry J. Reedy added the comment:

Guido on python-ideas: I ave to agree with the other committers who already 
spoke up.

Me: I use dir to see the complete list now presently presented.  The presence 
or absence of  __file__ indicates coded on Python or not.

IDLE module completion start with public items (I believe __all__ or not start 
with _).  Type '_' and the complete list appears.  I think we should reject 
this.

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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Nick Coghlan]

Nick Coghlan added the comment:

While I agree changing the default would be risky from a compatibility 
perspective, I do think it would be helpful to offer a straightforward way to 
filter out transitive imports and other non-public implementation details from 
the result of `dir(module)`, and require folks to use 
`list(vars(module).keys())` if they want a reliably complete listing of all 
global variables defined in a module.

The simplest spelling that comes to mind would be to allow people to write:

__dir__ = __all__

to get ``__all__`` to also affect the result of ``dir()``, permitting module 
authors to make their own determination as to whether they consider "The result 
of dir() includes non-public implementation details" to be covered by any 
backwards compatibility guarantees they might offer.

A less simple, but potentially more flexible, mechanism would be to require 
that to be spelled as:

def __dir__():
return __all__

but I'm not sure the extra flexibility would be useful in any meaningful way 
(especially if one of the options for easier definition of dynamic module level 
properties were eventually adopted).

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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Nick Coghlan]

Nick Coghlan added the comment:

As far the implementation goes, since the `__dir__` overload support in the 
`dir()` builtin ignores instance dictionaries, this could be implemented in 
module.__dir__ (or object.__dir__) rather than directly in the builtin.

Alternatively, it could use a different attribute name rather than having 
`__dir__` be a list of strings on instances, and a protocol method on classes.

If we went with a different name, then I think `__public__` would be a 
reasonable option, since the purpose of the attribute is to make it easy to 
programmatically distinguish public attributes from non-public ones 
(independently of the established leading underscore convention, which doesn't 
work well for transitive module references).

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[issue31503] Enhance dir(module) to be informed by __all__ by updating module.__dir__

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

This would break tab completion of names not included in __all__.

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[issue31016] [Regression] sphinx shows an EOF error when using python2.7 from the trunk

[STINNER Victor]

STINNER Victor added the comment:

FYI The bug has been fixed in the Sphinx development branch (HEAD of master): 
https://github.com/sphinx-doc/sphinx/issues/4061#issuecomment-330140975 I 
validated that Sphinx master now works as expected on Python 2.7.14.

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