[issue37289] regression in cython due to peephole optomization

[Thomas Caswell]

Thomas Caswell  added the comment:

This change also causes failures in the cython test suite (see attached).

--
Added file: https://bugs.python.org/file48422/cython_test_log.txt

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[issue32846] Deletion of large sets of strings is extra slow

[Terry J. Reedy]

Terry J. Reedy  added the comment:

I reran the code in msg312188.  Ints as before, string deletion +- linear up to 
100 million, much better than before.

millions   old stringsnew strings
of items  create delete  create delete
   4   1.55.36 1.7.38
   8   3.18.76 3.6.78
  16   6.48   1.80 7.3   1.71
  32  13.65.5614.8   3.8
  64  28 19   30 8.4
 100  56 80   5014.3

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[issue28708] Low FD_SETSIZE limit on Windows

[Andrei Zene]

Andrei Zene  added the comment:

That's actually a great explanation Nathaniel. Thanks for putting that all 
together.

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[issue37289] regression in cython due to peephole optomization

[Thomas Caswell]

New submission from Thomas Caswell :

The fix for 
https://bugs.python.org/issue37213 in 3498c642f4e83f3d8e2214654c0fa8e0d51cebe5 
(https://github.com/python/cpython/pull/13969) seems to break building numpy 
(master) with cython (master) due to a pickle failure.

The traceback (which is mostly in the cython source) is in an attachment.

I bisected it back to this commit and tested that reverting this commit fixes 
the numpy build.

--
files: np_fail.txt
messages: 345655
nosy: pablogsal, scoder, serhiy.storchaka, tcaswell, vstinner
priority: normal
severity: normal
status: open
title: regression in cython due to peephole optomization
type: behavior
versions: Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48421/np_fail.txt

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[issue26543] [EASY] imaplib noop Debug: bytes vs Unicode bug in debug mode

[Abhilash Raj]

Change by Abhilash Raj :


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nosy: +maxking

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[issue4963] mimetypes.guess_extension result changes after mimetypes.init()

[Abhilash Raj]

Change by Abhilash Raj :


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[issue32846] Deletion of large sets of strings is extra slow

[Tim Peters]

Tim Peters  added the comment:

Raymond, please read my very recent comment one above yours.  A (overall) 
quadratic-time algorithm (O(A**2) where A is the number of arenas) in 
obmalloc.c is (to my eyes) probably the _primary_ cause of the sloth here.  
That's been fixed for 3.8, but I don't have enough RAM even to run Terry's test 
code to confirm it.

I can confirm that there's no quadratic-time behavior anymore deleting large 
sets of strings, but only until I run out of RAM.  Neither is the behavior 
linear, but it's much closer to linear than quadratic now.

If someone with more RAM can confirm this for larger sets, then fine by me if 
this is closed again.

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[issue32846] Deletion of large sets of strings is extra slow

[Raymond Hettinger]

Raymond Hettinger  added the comment:

Can we close this now?  ISTM the issue has less to do with sets and more to do 
with memory allocation quirks and that on modern CPUs random memory accesses 
are slower than sequential memory accesses.  It is not a bug that sets are 
unordered collections that iterate over elements in a difference order than 
they were inserted.

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[issue32846] Deletion of large sets of strings is extra slow

[Tim Peters]

Change by Tim Peters :


--
stage: resolved -> commit review

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[issue32846] Deletion of large sets of strings is extra slow

[Tim Peters]

Tim Peters  added the comment:

Looks likely that the _major_ cause of the quadratic-time delete behavior was 
due to that obmalloc used a linear-time method to keep its linked list of 
usable arenas sorted in order of number of free pools.  When a pool became 
unused, its arena's count of free pools increased by one, and then order was 
restored by moving the arena "to the right" in the linked list, one slot at a 
time.

When there were only a few hundred arenas, nobody noticed.  But programs with 
thousands of arenas could suffer very noticeable sloth, and programs with 
hundreds of thousands could appear to hang (could require days to complete 
deleting).

This was fixed in issue #37029, using a constant-time method to restore sorted 
order, scheduled for release in Python 3.8.

--
stage:  -> resolved
versions: +Python 3.8 -Python 3.9

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[issue36707] The "m" ABI flag of SOABI for pymalloc is no longer needed

[miss-islington]

miss-islington  added the comment:


New changeset 3fde750cc4e4057076650a92946ec1d492464799 by Miss Islington (bot) 
in branch '3.8':
bpo-36707: Document "m" removal from sys.abiflags (GH-14090)
https://github.com/python/cpython/commit/3fde750cc4e4057076650a92946ec1d492464799


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[issue36707] The "m" ABI flag of SOABI for pymalloc is no longer needed

[miss-islington]

Change by miss-islington :


--
pull_requests: +13953
pull_request: https://github.com/python/cpython/pull/14097

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[issue36707] The "m" ABI flag of SOABI for pymalloc is no longer needed

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 7efc526e5cfb929a79c192ac2dcf7eb78d3a4401 by Victor Stinner in 
branch 'master':
bpo-36707: Document "m" removal from sys.abiflags (GH-14090)
https://github.com/python/cpython/commit/7efc526e5cfb929a79c192ac2dcf7eb78d3a4401


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[issue32846] Deletion of large sets of strings is extra slow

[Inada Naoki]

Change by Inada Naoki :


--
resolution: wont fix -> 
stage: resolved -> 
status: closed -> open
versions: +Python 3.9 -Python 3.7, Python 3.8

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[issue31200] address sanitizer build fails

[Julien Palard]

Change by Julien Palard :


--
pull_requests: +13952
pull_request: https://github.com/python/cpython/pull/13168

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[issue37288] Fix Windows build when --no-tkinter is specified

[Paul Monson]

Change by Paul Monson :


--
keywords: +patch
pull_requests: +13951
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/14096

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[issue37288] Fix Windows build when --no-tkinter is specified

[Paul Monson]

Paul Monson  added the comment:

Change title: Fix Windows build when --no-tkinter is specified
I noticed this because the Windows arm32 buildbot build was broken.

--
title: Windows arm32 buildbot build is broken -> Fix Windows build when 
--no-tkinter is specified

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[issue37288] Windows arm32 buildbot build is broken

[Paul Monson]

New submission from Paul Monson :

https://github.com/python/cpython/pull/14065 breaks building with --no-tkinter. 
Which breaks the Windows arm32 buildbot

`C:\Users\buildbot\buildarea\3.x.monson-win-arm32.nondebug\build\PCbuild\python.vcxproj(158,9):
 error MSB4184: The expression 
"[System.IO.File]::ReadAllText(C:\Users\buildbot\buildarea\3.x.monson-win-arm32.nondebug\build\externals\tcltk-8.6.9.0\arm32\tcllicense.terms)"
 cannot be evaluated. Could not find a part of the path 
'C:\Users\buildbot\buildarea\3.x.monson-win-arm32.nondebug\build\externals\tcltk-8.6.9.0\arm32\tcllicense.terms'.`

--
components: Build, Windows
messages: 345648
nosy: Paul Monson, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Windows arm32 buildbot build is broken
type: compile error
versions: Python 3.8, Python 3.9

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[issue37208] Weird exception behaviour in ProcessPoolExecutor

[Brian Quinlan]

Change by Brian Quinlan :


--
resolution:  -> duplicate
superseder:  -> picke cannot dump Exception subclasses with different super() 
args

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[issue37287] picke cannot dump Exception subclasses with different super() args

[Brian Quinlan]

Change by Brian Quinlan :


--
title: picke cannot dump exceptions subclasses with different super() args -> 
picke cannot dump Exception subclasses with different super() args

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[issue37287] picke cannot dump exceptions subclasses with different super() args

[Brian Quinlan]

New submission from Brian Quinlan :

$ ./python.exe nopickle.py
TypeError: __init__() missing 1 required positional argument: 'num'

The issue is that the arguments passed to Exception.__init__ (via `super()`) 
are collected into `args` and then serialized by pickle e.g.

>>> PickleBreaker(5).args
()
>>> PickleBreaker(5).__reduce_ex__(3)
(, (), {'num': 5})
>>> # The 1st index is the `args` tuple

Then, during load, the `args` tuple is used to initialize the Exception i.e. 
PickleBreaker(), which results in the `TypeError`

See https://github.com/python/cpython/blob/master/Modules/_pickle.c#L6769

--
components: Library (Lib)
files: nopickle.py
messages: 345647
nosy: bquinlan
priority: normal
severity: normal
status: open
title: picke cannot dump exceptions subclasses with different super() args
versions: Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48420/nopickle.py

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[issue37275] GetConsole(Output)CP is used even when stdin/stdout is redirected

[Inada Naoki]

Inada Naoki  added the comment:

On Sat, Jun 15, 2019 at 2:43 AM Eryk Sun  wrote:
>
> Eryk Sun  added the comment:
>
> > # Power Shell 6 (use cp65001 by default)
> > PS C:¥> python3 -c "print('おはよう')" > ps.txt
>
> PowerShell standard I/O redirection is different from any shell I've ever 
> used. In this case, it runs Python with StandardOutput set to a handle for a 
> pipe instead of a handle for the file. It decodes Python's output using 
> whatever encoding is configured for input and re-encodes it with whatever 
> encoding is configured for output.

I'm sorry,  I mixed my assumption.  I checked `os.device_encoding()` in cmd,
but forgot to check it on Power Shell.  All I said about Power Shell was just
my assumption and it was wrong.  And thank you for clarifying.

I confirmed writing UTF-8 to pipe cause mojibake, because Power Shell decodes
it using cp932.

```
PS C:\Users\inada-n> python3 -Xutf8 -c "import os,sys;
print(os.device_encoding(1), sys.stdout.encoding, file=sys.stderr);
print('こんにちは')" >x
None utf-8
PS C:\Users\inada-n> type x
```

Hmm, how can I teach to Power Shell about python3 is using
UTF-8 for stdout?
It seems cmd.exe with chcp 65001 and PYTHONUTF8=1 is better
than PowerShell when I want to use UTF-8 on Windows.

Anyway, nothing is wrong about python.  I just didn't understand
PowerShell at all.

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[issue37275] GetConsole(Output)CP is used even when stdin/stdout is redirected

[Inada Naoki]

Change by Inada Naoki :


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

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:

x86 Windows7 3.7:
https://buildbot.python.org/all/#/builders/111/builds/1123

test_start_tls_server_1 (test.test_asyncio.test_sslproto.SelectorStartTLSTests) 
... Exception in thread test-client:
Traceback (most recent call last):
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\functional.py",
 line 198, in run
self._prog(TestSocketWrapper(self._sock))
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\test_sslproto.py",
 line 565, in 
with self.tcp_client(lambda sock: client(sock, addr),
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\test_sslproto.py",
 line 510, in client
answer = sock.recv_all(len(ANSWER))
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\functional.py",
 line 138, in recv_all
data = self.recv(n - len(buf))
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\ssl.py", 
line 1045, in recv
return self.read(buflen)
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\ssl.py", 
line 920, in read
return self._sslobj.read(len)
ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:2488)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 
926, in _bootstrap_inner
self.run()
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\functional.py",
 line 200, in run
self._test._abort_socket_test(ex)
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\test_asyncio\functional.py",
 line 122, in _abort_socket_test
self.fail(ex)
  File 
"D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\case.py", 
line 693, in fail
raise self.failureException(msg)
AssertionError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:2488)

D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py:960: 
ResourceWarning: unclosed 
  del exc_type, exc_value, exc_tb
ResourceWarning: Enable tracemalloc to get the object allocation traceback
ERROR

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:

Sadly, the fix is not perfect, the test failed on the very "x86 Windows7 3.x" 
buildbot:
https://buildbot.python.org/all/#/builders/58/builds/2627

ERROR: test_start_tls_server_1 
(test.test_asyncio.test_sslproto.SelectorStartTLSTests)
--
Traceback (most recent call last):
  File 
"D:\cygwin\home\db3l\buildarea\3.x.bolen-windows7\build\lib\test\test_asyncio\test_sslproto.py",
 line 578, in test_start_tls_server_1
self.loop.run_until_complete(run_main())
  File 
"D:\cygwin\home\db3l\buildarea\3.x.bolen-windows7\build\lib\asyncio\base_events.py",
 line 606, in run_until_complete
raise RuntimeError('Event loop stopped before Future completed.')
RuntimeError: Event loop stopped before Future completed.

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

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[issue37155] test_asyncio: test_stdin_broken_pipe() failed on AMD64 FreeBSD CURRENT Shared 3.x

[STINNER Victor]

STINNER Victor  added the comment:

x86 Windows7 3.x:
https://buildbot.python.org/all/#/builders/58/builds/2627

FAIL: test_stdin_broken_pipe 
(test.test_asyncio.test_subprocess.SubprocessProactorTests)
--
Traceback (most recent call last):
  File 
"D:\cygwin\home\db3l\buildarea\3.x.bolen-windows7\build\lib\test\test_asyncio\test_subprocess.py",
 line 243, in test_stdin_broken_pipe
self.assertRaises((BrokenPipeError, ConnectionResetError),
AssertionError: (, ) not 
raised by run_until_complete

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[issue37208] Weird exception behaviour in ProcessPoolExecutor

[Brian Quinlan]

Brian Quinlan  added the comment:

That's a super interesting bug! It looks like this issue is that your exception 
can't be round-tripped using pickle i.e.

>>> class PoolBreaker(Exception):
... def __init__(self, num):
... super().__init__()
... self.num = num
... 
>>> import pickle
>>> pickle.loads(pickle.dumps(PoolBreaker(5)))
Traceback (most recent call last):
  File "", line 1, in 
TypeError: __init__() missing 1 required positional argument: 'num'

--
assignee:  -> bquinlan

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[issue23892] Introduce sys.implementation.opt_levels

[Eric Snow]

Eric Snow  added the comment:

There are (solvable) problems with my original recommendation:

1. sys.implementation is by definition not suitable for third-party import 
hooks to modify
  + it is set during the Python implementation during runtime init
  + it is effectively read-only after that
2. "opt_levels" is too specific to the CPython status quo
  + there are other ways to encode the optimizations of a bytecode file [1]
  + "optimizations" would probably be more correct
  + that opens a whole can of worms (e.g. what does sys.flags.optimize mean)

So we may want to think this over a bit before going any further.  I'm going to 
collect my thoughts on this and write more later. :)


[1] In PEP 488 it says:

It is expected that beyond Python's own two optimization levels,
third-party code will use a hash of optimization names to specify
the optimization level, e.g. hashlib.sha256(','.join(['no dead code',
'const folding'])).hexdigest().

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:

> I have had to fix it much earlier :(

That's fine. If this bug was more annoying, I would have it fixed myself
earlier. But I had other more critical bugs to fix before that one. The
important part is that it is fixed now.

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[issue32912] Raise non-silent warning for invalid escape sequences

[Aaron Meurer]

Aaron Meurer  added the comment:

I agree. Please someone else do that. I don't know what already has issues and 
I unfortunately don't have time right now to help out with any of this. 

I simply mentioned all these things as arguments why Python should not (yet) 
make these warnings errors, which is the point of this issue. 

Also, for the pyparsing example, you would have gotten lucky because it also 
contained \w, which is not a valid escape. If it didn't, you wouldn't be 
warned. So clearly this will help things, but it will also be good to have 
linting tools that, for example, warn about any escape sequences inside 
docstrings.

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[issue37271] Make multiple passes of the peephole optimizer until bytecode cannot be optimized further

[Raymond Hettinger]

Raymond Hettinger  added the comment:

FWIW, when the peephole optimizer was originally accepted, it was partly on the 
condition that we kept it simple and fast.  Perhaps, the sentiment has changed, 
perhaps not.

--
nosy: +rhettinger

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[issue37286] Pasting emoji crashes IDLE

[Terry J. Reedy]

Terry J. Reedy  added the comment:

In the absence of evidence otherwise (the string that you pasted and the full 
traceback), I assume that you pasted a non-BMP codepoint, making this a 
duplicate of #13153.  If you think otherwise, please supply more info.

--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> IDLE 3.x on Windows crashes when pasting non-BMP unicode

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[issue37285] Python 2.7 setup.py incorrectly double-joins SDKROOT

[Ned Deily]

Change by Ned Deily :


--
assignee:  -> ned.deily
nosy: +ned.deily

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[issue23892] Introduce sys.implementation.opt_levels

[Eric Snow]

Eric Snow  added the comment:

(Sorry for taking so long!)

Thanks for doing this, Cheryl!  I'm leaving a review on your PR. :)

Also, in PEP 421 it says that you need a PEP for this. [1]  "Such a PEP need 
not be long, just long enough."  (I just realized that the requirement isn't 
obvious so I've opened issue #37284.)


[1] https://www.python.org/dev/peps/pep-0421/#adding-new-required-attributes

--
versions: +Python 3.9 -Python 3.8

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[issue12857] Expose called function on frame object

[Zachary Ware]

Change by Zachary Ware :


--
Removed message: https://bugs.python.org/msg345592

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[issue24980] Allow for providing 'on_new_thread' callback to 'concurrent.futures.ThreadPoolExecutor'

[Brian Quinlan]

Brian Quinlan  added the comment:

Joshua, I'm closing this since I haven't heard from you in a month. Please 
re-open if you use case isn't handled by `initializer` and `initargs`.

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

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[issue37286] Pasting emoji crashes IDLE

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Can you please add a traceback if any? See also 
https://bugs.python.org/issue13153

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[issue29412] IndexError thrown on email.message.Message.get

[Abhilash Raj]

Abhilash Raj  added the comment:

Nevermind, I was wrong, I was able to reproduce it:

>>> msg = email.message_from_string('To: (Recipient list suppressed)', 
>>> policy=email.policy.default))
  File "", line 1
SyntaxError: unmatched ')'
>>> msg = email.message_from_string('To: (Recipient list suppressed)', 
>>> policy=email.policy.default)
>>> msg.get('to')
Traceback (most recent call last):
  File "", line 1, in 
  File "/home/maxking/Documents/cpython/Lib/email/message.py", line 471, in get
return self.policy.header_fetch_parse(k, v)
  File "/home/maxking/Documents/cpython/Lib/email/policy.py", line 163, in 
header_fetch_parse
return self.header_factory(name, value)
  File "/home/maxking/Documents/cpython/Lib/email/headerregistry.py", line 589, 
in __call__
return self[name](name, value)
  File "/home/maxking/Documents/cpython/Lib/email/headerregistry.py", line 197, 
in __new__
cls.parse(value, kwds)
  File "/home/maxking/Documents/cpython/Lib/email/headerregistry.py", line 340, 
in parse
kwds['parse_tree'] = address_list = cls.value_parser(value)
  File "/home/maxking/Documents/cpython/Lib/email/headerregistry.py", line 331, 
in value_parser
address_list, value = parser.get_address_list(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1951, in get_address_list
token, value = get_address(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1928, in get_address
token, value = get_group(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1884, in get_group
token, value = get_display_name(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1710, in get_display_name
token, value = get_phrase(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1385, in get_phrase
token, value = get_word(value)
  File "/home/maxking/Documents/cpython/Lib/email/_header_value_parser.py", 
line 1360, in get_word
if value[0]=='"':
IndexError: string index out of range

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[issue29412] IndexError thrown on email.message.Message.get

[Abhilash Raj]

Abhilash Raj  added the comment:

For the record, this is how I tested using the master branch:

>>> msg = email.message_from_string('  To: (Recipient list suppressed)')
>>> msg['To']
>>> import email.policy
>>> msg = email.message_from_string('  To: (Recipient list suppressed)', 
>>> policy=email.policy.default)
>>> msg

>>> msg['To']
>>> msg.get('to')

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[issue29412] IndexError thrown on email.message.Message.get

[Abhilash Raj]

Abhilash Raj  added the comment:

I can't reproduce this problem with the latest master branch, it was perhaps 
fixed with some other PR. 

This is also a dupe of bpo-31445.

@barry, @david: I think this issue can be closed.

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[issue37286] Pasting emoji crashes IDLE

[Miłosz]

New submission from Miłosz :

On Windows 10

--
assignee: terry.reedy
components: IDLE
messages: 345630
nosy: md37, terry.reedy
priority: normal
severity: normal
status: open
title: Pasting emoji crashes IDLE
type: crash
versions: Python 3.7

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[issue31445] Index out of range in get of message.EmailMessage.get()

[Abhilash Raj]

Abhilash Raj  added the comment:

I can't reproduce this issue on the latest master branch. This seems to be 
fixed as a part of a different PR I suppose.

>>> import email
>>> msg = email.message_from_string("From: Bonifac Karaka : 
boni...@gmail.com")
>>> msg['From']
'Bonifac Karaka : boni...@gmail.com'

This is very similar to bpo-32178, which also is now fixed.

@david, @barry, I think we can close this issue.

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[issue32179] Empty email address in headers triggers an IndexError

[Abhilash Raj]

Abhilash Raj  added the comment:

I wasn't able to reproduce this on the latest master. Probably fixed as a part 
of some other PR.

>>> msg = email.message_from_string('ReplyTo: ""')
>>> msg

>>> msg['ReplyTo']
'""'

I think this issue can be closed.

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[issue32178] Some invalid email address groups cause an IndexError instead of a HeaderParseError

[Abhilash Raj]

Abhilash Raj  added the comment:

I don't think this is an issue anymore, I guess this was fixed as a part of 
some other PR.

I tested this out on a recent branch:

   >>> import email
   >>> msg = email.message_from_string('From: Abhilash  
')
   >>> msg['From'] 
   'Abhilash  '

@david, @barry: I think we can close this issue.

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[issue37285] Python 2.7 setup.py incorrectly double-joins SDKROOT

[Misty De Méo]

Change by Misty De Méo :


--
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stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/14095

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[issue37285] Python 2.7 setup.py incorrectly double-joins SDKROOT

[Misty De Méo]

New submission from Misty De Méo :

Python 2.7's setup.py has incorrect behaviour when adding the SDKROOT to the 
beginning of the include path while searching.

When searching paths, find_file first checks is_macosx_sdk_path  to see if it 
needs to add the sdk_root: 
https://github.com/python/cpython/blob/2.7/setup.py#L87-L88

This is mostly correct, except one of the path prefixes it checks is /Library: 
https://github.com/python/cpython/blob/2.7/setup.py#L64

The Xcode CLT path is located in /Library, so this check passes. That means the 
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk portion of the path 
gets repeated, leading to an invalid path.

I recognize Python 2.7 isn't in active development, but I have a minimal patch 
to fix this that I will be submitting.

--
components: Build
messages: 345626
nosy: mistydemeo
priority: normal
severity: normal
status: open
title: Python 2.7 setup.py incorrectly double-joins SDKROOT
type: compile error
versions: Python 2.7

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[issue36785] Implement PEP 574

[Antoine Pitrou]

Antoine Pitrou  added the comment:

Now complete, closing :-)

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[issue37271] Make multiple passes of the peephole optimizer until bytecode cannot be optimized further

[Brett Cannon]

Change by Brett Cannon :


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[issue37284] Not obvious that new required attrs of sys.implementation must have a PEP.

[Eric Snow]

New submission from Eric Snow :

PEP 421 added sys.implementation for Python implementors to provide values 
required by stdlib code (e.g. importlib).  That PEP indicates that any new 
required attributes must go through the PEP process. [1]  That requirement 
isn't obvious.

To fix that we should add a brief note to the sys.implementation docs [2] 
identifying the requirement.


[1] https://www.python.org/dev/peps/pep-0421/#adding-new-required-attributes
[2] https://docs.python.org/3/library/sys.html#sys.implementation

--
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keywords: easy
messages: 345624
nosy: cheryl.sabella, docs@python, eric.snow
priority: normal
severity: normal
stage: needs patch
status: open
title: Not obvious that new required attrs of sys.implementation must have a 
PEP.
versions: Python 3.7, Python 3.8, Python 3.9

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Thanks for the review, Victor!
I have had to fix it much earlier :(

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[issue35537] use os.posix_spawn in subprocess

[miss-islington]

miss-islington  added the comment:


New changeset e696b15a62dd0c85fe6ed3c9698b5f889c0bb1b3 by Miss Islington (bot) 
in branch '3.8':
bpo-35537: Rewrite setsid test for os.posix_spawn (GH-11721)
https://github.com/python/cpython/commit/e696b15a62dd0c85fe6ed3c9698b5f889c0bb1b3


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[issue35876] test_start_new_session for posix_spawnp fails

[miss-islington]

miss-islington  added the comment:


New changeset e696b15a62dd0c85fe6ed3c9698b5f889c0bb1b3 by Miss Islington (bot) 
in branch '3.8':
bpo-35537: Rewrite setsid test for os.posix_spawn (GH-11721)
https://github.com/python/cpython/commit/e696b15a62dd0c85fe6ed3c9698b5f889c0bb1b3


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[issue37275] GetConsole(Output)CP is used even when stdin/stdout is redirected

[Eryk Sun]

Eryk Sun  added the comment:

> # Power Shell 6 (use cp65001 by default)
> PS C:¥> python3 -c "print('おはよう')" > ps.txt

PowerShell standard I/O redirection is different from any shell I've ever used. 
In this case, it runs Python with StandardOutput set to a handle for a pipe 
instead of a handle for the file. It decodes Python's output using whatever 
encoding is configured for input and re-encodes it with whatever encoding is 
configured for output. 

To see what Python is actually writing, try using Start-Process with 
StandardOutput redirected to the file. For example:

Start-Process -FilePath python3.exe -ArgumentList "-c `"print('おはよう')`"" 
-NoNewWindow -Wait -RedirectStandardOutput ps.txt

> # cmd.exe
> C:¥> chcp 65001
> C:¥> python3 -c "print('おはよう')" > cmd.txt

CMD uses simple redirection, like every other shell I've ever used. It runs 
python3.exe with a handle for the file as its StandardOutput. So "cmd.txt" 
contains exactly what Python writes.

> * TextIOWrapper tries `os.device_encoding(1)`
> * `os.device_encoding(1)` use GetConsoleOutputCP() without checking stdout is 
> console

No, _Py_device_encoding returns None if the isatty(fd) is false, i.e. for a 
pipe or disk file. In this case, TextIOWrapper defaults to the encoding from 
locale.getpreferredencoding().

The current preferred encoding is the system ANSI codepage from GetACP(). 
Changing the default to UTF-8 would be disruptive. You can use UTF-8 mode (i.e. 
-X utf8). Or, to override just stdin, stdout, and stderr, set the environment 
variable "PYTHONIOENCODING=utf-8".

> In the example above, a console is attached when python is called from 
> Power Shell 6, but it is not attached when python is called from 
> cmd.exe.

In both cases the Python process inherits the console of the parent shell. The 
only way to run python.exe without a console is to use the CreateProcess 
creation flag DETACHED_PROCESS.

> There is a relating issue: UTF-8 mode doesn't override 
> stdin,stdout,stderr encoding when console is attached.

It works for me. For example, testing with stdout redirected to a pipe:

C:\>python -c "import sys;print(sys.stdout.encoding)" | more
cp1252

C:\>python -X utf8 -c "import sys;print(sys.stdout.encoding)" | more
utf-8

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[issue35876] test_start_new_session for posix_spawnp fails

[STINNER Victor]

STINNER Victor  added the comment:

I rewrote and reenabled the test. It should now be fixed in master, and the 3.8 
backport is coming soon.

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[issue35537] use os.posix_spawn in subprocess

[miss-islington]

Change by miss-islington :


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[issue35876] test_start_new_session for posix_spawnp fails

[miss-islington]

Change by miss-islington :


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[issue35537] use os.posix_spawn in subprocess

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 5884043252473ac733aba1d3251d4debe72511e5 by Victor Stinner in 
branch 'master':
bpo-35537: Rewrite setsid test for os.posix_spawn (GH-11721)
https://github.com/python/cpython/commit/5884043252473ac733aba1d3251d4debe72511e5


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[issue35876] test_start_new_session for posix_spawnp fails

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 5884043252473ac733aba1d3251d4debe72511e5 by Victor Stinner in 
branch 'master':
bpo-35537: Rewrite setsid test for os.posix_spawn (GH-11721)
https://github.com/python/cpython/commit/5884043252473ac733aba1d3251d4debe72511e5


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[issue32280] Expose `_PyRuntime` through a section name

[Eric Snow]

Eric Snow  added the comment:

(Sorry for the delay!)

Is the need for a named section due to the fact that _PyRuntime is part of the 
"internal" C-API (hidden behind the Py_BUILD_CORE macro)?  I.E. would it help 
to build with Py_BUILD_CORE?


Regarding the GIL:

The plan for 3.9 is to have one GIL per interpreter, so the relevant struct 
would be PyInterpreterState (a part of the public C-API).  That would be 
accessible at runtime via the fields of _PyRuntime.interpreters.


Regarding what I said before about multiple runtimes per process:

Honestly, I've yet to see any use case that would justify providing 
multi-runtime support.  However, there are code-health benefits to keeping 
*all* runtime state out of static globals.  So eliminating the _PyRuntime 
static variable is still a realistic possibility (for 3.9 or maybe later).

If that happens then there would have to be a new embedding C-API oriented 
around (opaque) PyRuntimestate pointers.  See PEP 432 and 587 for ongoing work 
to improve the embedding experience (for runtime initialization), including 
what the successors to Py_Initialize() look like.

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versions: +Python 3.9 -Python 3.8

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[issue37283] Unexpected behavior when running installer a second time with the same arguments or unattend.xml

[Steve Dower]

Steve Dower  added the comment:

Hmm... interesting.

Thanks for the heads-up, I think I know what this may be (there's a conditional 
planning stage in the bootstrapper that is probably being skipped on Modify). 
I'll take a look when I get a chance.

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[issue37261] test_io leaks references on AMD64 Fedora Rawhide Refleaks 3.8

[miss-islington]

miss-islington  added the comment:


New changeset 3b976d19c8c09e83eec63a5b62daf4d55bfd6aeb by Miss Islington (bot) 
in branch '3.8':
bpo-37261: Document sys.unraisablehook corner cases (GH-14059)
https://github.com/python/cpython/commit/3b976d19c8c09e83eec63a5b62daf4d55bfd6aeb


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[issue37266] Daemon threads must be forbidden in subinterpreters

[STINNER Victor]

STINNER Victor  added the comment:

Daemon threads must die. That's a first step towards their death!

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[issue37266] Daemon threads must be forbidden in subinterpreters

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 066e5b1a917ec2134e8997d2cadd815724314252 by Victor Stinner in 
branch 'master':
bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049)
https://github.com/python/cpython/commit/066e5b1a917ec2134e8997d2cadd815724314252


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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[STINNER Victor]

STINNER Victor  added the comment:

Thanks Zackery Spytz for the fix. Thanks Gergely Erdélyi for the bug report! 
Sorry for the long delay.

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status: open -> closed

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[issue36707] The "m" ABI flag of SOABI for pymalloc is no longer needed

[STINNER Victor]

Change by STINNER Victor :


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pull_request: https://github.com/python/cpython/pull/14090

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[miss-islington]

miss-islington  added the comment:


New changeset b0f6fa8d7d4c6d8263094124df9ef9cf816bbed6 by Miss Islington (bot) 
in branch '3.8':
bpo-19865: ctypes.create_unicode_buffer() supports non-BMP strings on Windows 
(GH-14081)
https://github.com/python/cpython/commit/b0f6fa8d7d4c6d8263094124df9ef9cf816bbed6


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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[miss-islington]

miss-islington  added the comment:


New changeset 0b592d513b073cd3a4ba7632907c25b8282f15ce by Miss Islington (bot) 
in branch '3.7':
bpo-19865: ctypes.create_unicode_buffer() supports non-BMP strings on Windows 
(GH-14081)
https://github.com/python/cpython/commit/0b592d513b073cd3a4ba7632907c25b8282f15ce


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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 33feb2e1a391cde91aefcb8d9cf5144b5fbc5d87 by Victor Stinner in 
branch '3.7':
bpo-35998: Avoid TimeoutError in test_asyncio: test_start_tls_server_1() 
(GH-14080) (GH-14086)
https://github.com/python/cpython/commit/33feb2e1a391cde91aefcb8d9cf5144b5fbc5d87


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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[miss-islington]

miss-islington  added the comment:


New changeset 0c2eb6d21013d77e1160250d3cf69ca80215d064 by Miss Islington (bot) 
in branch '3.8':
bpo-35998: Avoid TimeoutError in test_asyncio: test_start_tls_server_1() 
(GH-14080)
https://github.com/python/cpython/commit/0c2eb6d21013d77e1160250d3cf69ca80215d064


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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:

> Finally fixed

Thank you very much! I looked at this issue 2 or 3 times but I failed to fix 
it. This bug was super annoying: it failed multiple times per week on Fedora 
buildbots.

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[issue34651] Disallow fork in a subinterpreter.

[STINNER Victor]

STINNER Victor  added the comment:

See also bpo-37266: "Daemon threads must be forbidden in subinterpreters".

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[issue37193] Memory leak while running TCP/UDPServer with socketserver.ThreadingMixIn

[Wei Li]

Wei Li  added the comment:

I got the same problem when uing the ThreadingTCPServer.

I think adding 
"self._threads = list(filter(lambda x: x.is_alive(), self._threads))"
at the last line in process_request method is a potential way to fix the bug

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[issue37261] test_io leaks references on AMD64 Fedora Rawhide Refleaks 3.8

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 212646cae6b7c4ddc8d98c8b9b6d39a5f259e864 by Victor Stinner in 
branch 'master':
bpo-37261: Document sys.unraisablehook corner cases (GH-14059)
https://github.com/python/cpython/commit/212646cae6b7c4ddc8d98c8b9b6d39a5f259e864


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[issue37261] test_io leaks references on AMD64 Fedora Rawhide Refleaks 3.8

[miss-islington]

Change by miss-islington :


--
pull_requests: +13945
pull_request: https://github.com/python/cpython/pull/14089

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[issue37275] GetConsole(Output)CP is used even when stdin/stdout is redirected

[Steve Dower]

Steve Dower  added the comment:

Isn't the point that device_encoding(FD) gets the encoding of the specified 
file? In this case stdout?

It seems odd that chcp doesn't actually update the console code page here, as 
that is its entire purpose. Perhaps TextIOWrapper is actually getting ACP 
rather than the console encoding through some other path?

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[miss-islington]

Change by miss-islington :


--
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pull_request: https://github.com/python/cpython/pull/14088

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[miss-islington]

Change by miss-islington :


--
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pull_request: https://github.com/python/cpython/pull/14087

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 9765efcb39fc03d5b1abec3924388974470a8bd5 by Victor Stinner 
(Zackery Spytz) in branch 'master':
bpo-19865: ctypes.create_unicode_buffer() supports non-BMP strings on Windows 
(GH-14081)
https://github.com/python/cpython/commit/9765efcb39fc03d5b1abec3924388974470a8bd5


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[issue37274] Scripts folder is empty in python 3.7.3 for windows.

[Steve Dower]

Steve Dower  added the comment:

You should have a set of log files in %TEMP%. Can you zip those up and attach 
them here?

Pip may be failing to install for some reason, and while this ought to be 
reported, it is not supposed to cause the entire installation to fail.

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[issue34651] Disallow fork in a subinterpreter.

[Eric Snow]

Eric Snow  added the comment:

FYI, I plan on looking into this either today or next Friday.

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Finally fixed

--
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status: open -> closed

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

Change by STINNER Victor :


--
pull_requests: +13942
pull_request: https://github.com/python/cpython/pull/14086

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[miss-islington]

Change by miss-islington :


--
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pull_request: https://github.com/python/cpython/pull/14084

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[STINNER Victor]

STINNER Victor  added the comment:


New changeset f0749da9a535375f05a2015e8960e8ae54877349 by Victor Stinner 
(Andrew Svetlov) in branch 'master':
bpo-35998: Avoid TimeoutError in test_asyncio: test_start_tls_server_1() 
(GH-14080)
https://github.com/python/cpython/commit/f0749da9a535375f05a2015e8960e8ae54877349


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[issue12857] Expose called function on frame object

[Eric Snow]

Change by Eric Snow :


Removed file: https://bugs.python.org/file48418/122.pdf

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[Zackery Spytz]

Zackery Spytz  added the comment:

I have created a pull request for this issue. Please take a look.

--
nosy: +ZackerySpytz
versions: +Python 3.9 -Python 3.4, Python 3.5, Python 3.6

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[issue19865] create_unicode_buffer() fails on non-BMP strings on Windows

[Zackery Spytz]

Change by Zackery Spytz :


--
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pull_requests: +13940
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/14081

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[issue35998] test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 29

[Andrew Svetlov]

Change by Andrew Svetlov :


--
keywords: +patch
pull_requests: +13939
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/14080

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[issue26145] [WIP] PEP 511: Add sys.set_code_transformers()

[STINNER Victor]

Change by STINNER Victor :


Removed file: https://bugs.python.org/file48419/123.pdf

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[issue37081] Test with OpenSSL 1.1.1c

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Duplicate of #35998

--
resolution:  -> duplicate
stage: patch review -> resolved
status: open -> closed
superseder:  -> test_asyncio: test_start_tls_server_1() TimeoutError on Fedora 
29

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[issue37202] Future.cancelled is not set to true immediately after calling Future.cancel

[Andrew Svetlov]

Change by Andrew Svetlov :


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status: open -> closed

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[issue37278] test_asyncio: ProactorLoopCtrlC leaks one reference

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Welcome!
Thanks for the fix!

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[issue37283] Unexpected behavior when running installer a second time with the same arguments or unattend.xml

[SilentGhost]

Change by SilentGhost :


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

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[issue37273] from pickle import rick

[Luiz Amaral]

Luiz Amaral  added the comment:

It seemed a good idea when I made the PR, now I feel bad for wasting your time 
 sorry guys.

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[issue26145] [WIP] PEP 511: Add sys.set_code_transformers()

[kev levrone]

Change by kev levrone :


Added file: https://bugs.python.org/file48419/123.pdf

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[issue12857] Expose called function on frame object

[kev levrone]

kev levrone  added the comment:

def enable_ki_protection(func):
func._trio_keyboard_interrupt_protection_enabled = True
return func

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Added file: https://bugs.python.org/file48418/122.pdf

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[issue37250] C files generated by Cython set tp_print to NULL: PyTypeObject.tp_print removed, replaced with tp_vectorcall_offset

[Stefan Behnel]

Stefan Behnel  added the comment:

I agree with Steve that broadly redefining a global name in a widely used 
header file is not a good idea. You never know what names users have in their 
code. Yes, you can work around it by undef-ing it again, but honestly, in that 
case, both sides are hacks.

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[issue37278] test_asyncio: ProactorLoopCtrlC leaks one reference

[STINNER Victor]

STINNER Victor  added the comment:

Thanks for the review Andrew.

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[issue37278] test_asyncio: ProactorLoopCtrlC leaks one reference

[STINNER Victor]

Change by STINNER Victor :


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status: open -> closed

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[issue37283] Unexpected behavior when running installer a second time with the same arguments or unattend.xml

[Jörn Jacobi]

New submission from Jörn Jacobi :

When executing the installer with arguments or using the unattend.xml to run it 
without UI as documented in 
https://python.readthedocs.io/en/stable/using/windows.html#installing-without-ui
 the installer ignores the arguments or unattend.xml when it's executed again.

The second time, the installer (running i modify mode) uses the default values 
(hereby removing the Prepenpath if set the first time)

(testet with version 3.6.6-amd64 to 3.7.3-amd64 of the executable installer)

To recreate, run the following : 

step 1 :
python-3.6.6-amd64.exe /passive InstallAllUsers=1 PrependPath=1 Include_doc=0 
Include_dev=0 Include_tcltk=0 Include_test=0 SimpleInstall=1 

now python is install as expected.

step 2 : 
python-3.6.6-amd64.exe /passive InstallAllUsers=1 PrependPath=1 Include_doc=0 
Include_dev=0 Include_tcltk=0 Include_test=0 SimpleInstall=1

even though the options are exactly the same, the installer now removes python 
from path and installs tcltk, documentation, test and dev.

step 3 : 
python-3.6.6-amd64.exe /passive InstallAllUsers=1 PrependPath=1 Include_doc=0 
Include_dev=0 Include_tcltk=0 Include_test=0 SimpleInstall=1

now the installer only makes a quick check, what i would have expected in step 
2, but hare only the default values are used.

--
components: Installation
messages: 345589
nosy: Jörn Jacobi
priority: normal
severity: normal
status: open
title: Unexpected behavior when running installer a second time with the same 
arguments or unattend.xml
type: behavior
versions: Python 3.6, Python 3.7

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