[issue29639] test suite intentionally avoids referring to localhost, destroying abstraction away from IPv6 vs IPv4

[Gregory P. Smith]

Gregory P. Smith added the comment:


New changeset efb1d0a3c001a6153211063ba439b9847aa03509 by Gregory P. Smith in 
branch 'master':
bpo-29639: change test.support.HOST to "localhost"
https://github.com/python/cpython/commit/efb1d0a3c001a6153211063ba439b9847aa03509


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[issue31394] Ellipsis_token.type != token.ELLIPSIS

[Roundup Robot]

Changes by Roundup Robot :


--
keywords: +patch
pull_requests: +3461
stage: needs patch -> patch review

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[issue31394] Ellipsis_token.type != token.ELLIPSIS

[Aivar Annamaa]

Aivar Annamaa added the comment:

Here is the PR: https://github.com/python/cpython/pull/3469

(It's my first, so I don't know if I should to also update NEWS file or add 
"skip news" label. I signed the CLA, so I hope this warning goes away.)

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[issue31402] Python won't load on Acer Aspire

[Peter Cooney]

New submission from Peter Cooney:

Well I'm reading Al Sweigarts Automate the boring stuff, downloaded the exe for 
Python 3.6, and got the right 32-bit one, then nothing happens when I run it. 
It just does nothing. I do have it set up perfectly well on another computer, 
but it won't budge on this one. It's an Acer Aspire 32-bit 2.00Gb Ram notebook.
 Next I got a message from google telling me I have a problem signing in for my 
email, gmail, and need to clear all my cookies.

--
assignee: terry.reedy
components: IDLE
messages: 301766
nosy: Chikimonki, terry.reedy
priority: normal
severity: normal
status: open
title: Python won't load on Acer Aspire
type: crash
versions: Python 3.6

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[issue29930] Waiting for asyncio.StreamWriter.drain() twice in parallel raises an AssertionError when the transport stopped writing

[Aymeric Augustin]

Aymeric Augustin added the comment:

I worked around this bug in websockets by serializing access to `drain()` with 
a lock:

https://github.com/aaugustin/websockets/commit/198b71537917adb44002573b14cbe23dbd4c21a2

I suspect this is inefficient but it beats crashing.

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[issue25658] PyThread assumes pthread_key_t is an integer, which is against POSIX

[Masayuki Yamamoto]

Masayuki Yamamoto added the comment:

FYI, PEP 539 was accepted (see python-dev threads [1] [2]).
The only thing missing is a reference implementation, next I complete it.

[1] https://mail.python.org/pipermail/python-dev/2017-August/149091.html
[2] https://mail.python.org/pipermail/python-dev/2017-September/149354.html

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[issue30744] Local variable assignment is broken when combined with threads + tracing + closures

[Nick Coghlan]

Nick Coghlan added the comment:

After drafting PEP 558, briefly chatting about it to Guido, and sleeping on the 
topic, I'm wondering if there might be answer that's simpler than any of the 
alternatives consider so far: what if PyFrame_FastToLocals added the *cell 
objects* to f_locals for any variables that the compiler would access using 
LOAD/STORE_DEREF (rather than LOAD/STORE_FAST), and then PyFrame_LocalsToFast 
only wrote back the entries for variables that used LOAD/STORE_FAST?

That would be enough to fix the reported problems (since PyFrame_LocalsToFast 
would always leave closure variables alone in both the function defining the 
closure and the ones referencing it), and a trace hook that actually *wanted* 
to update the closure references could write to the "cell_contents" attribute 
on the cell of interest.

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[issue31392] Upgrade installers to OpenSSL 1.1.0f

[Steve Dower]

Steve Dower added the comment:


New changeset b84bcc48ae31c385fe480c08c05d95212ef7fcdc by Steve Dower in branch 
'master':
bpo-31392: Update SSL build for 1.1.0 (#3448)
https://github.com/python/cpython/commit/b84bcc48ae31c385fe480c08c05d95212ef7fcdc


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

[Nick Coghlan]

Nick Coghlan added the comment:

After chatting to Facebook's Carl Shapiro here at the core dev sprint, I'm 
going to start exploring a hopefully more robust white-listing based approach 
where we check for pending calls in the following cases:

* the instruction pointer either hasn't changed or has gone backwards and the 
instruction isn't a YIELD_FROM (the "return to the start of a loop" case)
* the next instruction is RETURN_VALUE (the function postamble case)

For now, I'm going to *skip* checking for additional pending calls when exiting 
a frame via exception, based on the theory that if we're already handling an 
exception, it's OK to wait until something catches it before checking for 
potential additional exception sources.

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[issue31345] Backport docstring improvements to the C version of OrderedDict

[Roundup Robot]

Changes by Roundup Robot :


--
keywords: +patch
pull_requests: +3463
stage: needs patch -> patch review

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[issue31345] Backport docstring improvements to the C version of OrderedDict

[Roundup Robot]

Changes by Roundup Robot :


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[issue31345] Backport docstring improvements to the C version of OrderedDict

[Henk-Jaap Wagenaar]

Henk-Jaap Wagenaar added the comment:

I submitted a pull request for both 3.5 and 3.6 finding 2 locations using 
search and find. I also replayed Raymond's example (with _collections as well) 
and got the documentation as expected on my custom builds of 3.5/3.6.

I submitted my CLA on 26th August but it has not been processed for some reason?

--
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[issue31345] Backport docstring improvements to the C version of OrderedDict

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Thanks Henk-Jaap,
3.5 branch is now on security fix only, so only the backport to 3.6 will be 
accepted.

It seems like you have two bug tracker accounts? Did you register with two 
different email address?
It appears that the CLA is received for one of your account, but that's not the 
account you are using now.

--
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versions:  -Python 3.5

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[issue31400] SSL module returns incorrect error codes on Windows

[Christian Heimes]

Christian Heimes added the comment:


New changeset 16f16dbd0ed02cd1a7b270eb6dd80d9bd179902e by Christian Heimes in 
branch '3.6':
[3.6] bpo-31400: Improve SSL error handling on Windows (GH-3463) (#3466)
https://github.com/python/cpython/commit/16f16dbd0ed02cd1a7b270eb6dd80d9bd179902e


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[issue31392] Upgrade installers to OpenSSL 1.1.0f

[Christian Heimes]

Christian Heimes added the comment:


New changeset 16f16dbd0ed02cd1a7b270eb6dd80d9bd179902e by Christian Heimes in 
branch '3.6':
[3.6] bpo-31400: Improve SSL error handling on Windows (GH-3463) (#3466)
https://github.com/python/cpython/commit/16f16dbd0ed02cd1a7b270eb6dd80d9bd179902e


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[issue31394] Ellipsis_token.type != token.ELLIPSIS

[Terry J. Reedy]

Terry J. Reedy added the comment:

Once the CLA * shows up after your name, one of us should remove CLA needed tag 
and bot will verify.  I believe tagging as trivial would also work.

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[issue31402] Python won't load on Acer Aspire

[Terry J. Reedy]

Terry J. Reedy added the comment:

Please ask for installation help on python-list.  It can also be accessed via 
news.gmane.org. Give following details: OS, including version; source of 
installer; how you tried to install; what error message you got.

If you have Windows XP, 3.6 will not install.  If Vista+, and you need to 
install .dll, do so.  Search or ask.

--
assignee: terry.reedy -> 
components: +Installation -IDLE
resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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[issue31361] Update feedparser.py to prevent theano compiling fail in python3

[R. David Murray]

R. David Murray added the comment:

Can you figure out what the input to feedparser is in those cases?  If pip or 
whatever is feeding in a None object, then that's not a bug in feedparser.  
However, if the input is a string (or bytes via the bytes interface) and this 
is heppening, then there's probably something wrong, but we'll need to see the 
actual input to determine what.

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[issue31403] Remove WITHOUT_THREADS from _decimal

[Stefan Krah]

Changes by Stefan Krah :


--
assignee: skrah
components: Extension Modules
nosy: skrah
priority: normal
severity: normal
status: open
title: Remove WITHOUT_THREADS from _decimal
type: behavior
versions: Python 3.7

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[issue31403] Remove WITHOUT_THREADS from _decimal

[Stefan Krah]

Changes by Stefan Krah :


--
keywords: +patch
pull_requests: +3466
stage:  -> patch review

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[issue31397] does not work import in Python 3.6.2

[R. David Murray]

R. David Murray added the comment:

Presumably the book didn't tell you everything you need to know to make this 
work, or you missed something in the instructions, since this certainly does 
work if the module is in a directory on sys.path.  (The 'python module1.py' 
will only work at the windows command prompt, by the way.)

This is a bug tracker, so it's not a good place to get help on installing and 
using Python.  I suggest trying the pythhon-list mailing list (see 
mail.python.org) or the #python irc channel.

--
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resolution:  -> works for me
stage:  -> resolved
status: open -> closed

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[issue31398] TypeError: gdbm key must be string, not unicode

[R. David Murray]

R. David Murray added the comment:

In python3, u"a" and "a" are the same thing.  The equivalent in python3 would 
bee b"a" vs "a", but I have no idea if we even support bytes keys in python3 
gdbm.

In 2.7 does has_key(u"x") work if x is a valid key?

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[issue31403] Remove WITHOUT_THREADS from _decimal

[Stefan Krah]

New submission from Stefan Krah:


New changeset c0c29dff7940b7e7ecc1dd051080c5d5f9e42ba8 by Stefan Krah in branch 
'master':
bpo-31403: Remove WITHOUT_THREADS from _decimal. (#3474)
https://github.com/python/cpython/commit/c0c29dff7940b7e7ecc1dd051080c5d5f9e42ba8


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[issue31403] Remove WITHOUT_THREADS from _decimal

[Stefan Krah]

Changes by Stefan Krah :


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

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[issue31404] undefined behavior and crashes in case of a bad sys.modules

[Oren Milman]

New submission from Oren Milman:

at least on my Windows, the following code:

import sys
sys.modules = []


- when run interactively, causes weird behavior, e.g. exit() doesn't exit the
  interpreter, and print() doesn't print.
  then, pressing Ctrl+C causes 'Assertion failed: !PyErr_Occurred(), file 
..\Objects\call.c, line 803'

- when run as a script, causes PyImport_Cleanup() to raise a negative ref count
  Fatal Python error.

  (this is because PyImport_Cleanup() (in Python/import.c) assumes that
  PyImport_GetModuleDict() returned a dict.)


IIUC, this bug was introduced in https://github.com/python/cpython/pull/1638
(which resolved #28411).

--
components: Interpreter Core
messages: 301783
nosy: Oren Milman
priority: normal
severity: normal
status: open
title: undefined behavior and crashes in case of a bad sys.modules
type: crash
versions: Python 3.7

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[issue31401] Dynamic compilation that uses function in comprehension fails when compiled inside function

[R. David Murray]

R. David Murray added the comment:

Could you please post the examples instead of a zip file?  Zip files are hard 
to read on a mobile browser :)

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[issue31405] shutil.which doesn't find files without PATHEXT extension on Windows

[Ryan McCampbell]

New submission from Ryan McCampbell:

On windows, shutil.which does not match the semantics of built-in command 
lookup. If you pass the name of a script like foo.py and the PATHEXT variable 
doesn't include .py it will search for foo.py.exe, foo.py.bat, foo.py.cmd, etc. 
but not foo.py, which should be the first name checked.

--
components: Library (Lib)
messages: 301785
nosy: rmccampbell7
priority: normal
severity: normal
status: open
title: shutil.which doesn't find files without PATHEXT extension on Windows
type: behavior
versions: Python 3.6

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[issue30744] Local variable assignment is broken when combined with threads + tracing + closures

[Nathaniel Smith]

Nathaniel Smith added the comment:

How does a trace function or debugger tell the difference between a closure 
cell and a fast local whose value happens to be a cell object?

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[issue29639] test suite intentionally avoids referring to localhost, destroying abstraction away from IPv6 vs IPv4

[R. David Murray]

R. David Murray added the comment:

Users on linux can and do screw this up too.  I believe we also had a case 
where a distro screwed up the defaults for, I think, the reverse resolve?  Not 
sure which test that was, and the test may since been fixed to not depend on 
that.  The point is this may break in unexpected ways but hopefully they will 
all be either fixable or legitimately "your system is broken".

I'll review the test_smtplib changes soonish (so ping me if I don't :)

--
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[issue31404] undefined behavior and crashes in case of a bad sys.modules

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
nosy: +eric.snow, serhiy.storchaka

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[issue31398] TypeError: gdbm key must be string, not unicode

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

has_key(u"x") works if x is a valid key.

has_key() parses the argument with PyArg_ParseTuple("s#") which implicitly 
converts unicode to str. __contains__() explicitly checks for str type.

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[issue31401] Dynamic compilation that uses function in comprehension fails when compiled inside function

[Jose Cambronero]

Jose Cambronero added the comment:

Woops, sorry about that, makes sense. Below an example (same idea as the files):

```
Python 3.6.2 (default, Sep  9 2017, 13:27:06) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> src = """
... def f(x): return x
... [f(v) for v in [1,2,3]]
... """
>>> def comp():
... exec(compile(src, filename='', mode='exec'))
... 
>>> comp()
Traceback (most recent call last):
  File "", line 1, in 
  File "", line 2, in comp
  File "", line 3, in 
  File "", line 3, in 
NameError: name 'f' is not defined
>>> exec(compile(src, filename='', mode='exec'))
>>> 
```

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[issue31299] Add "ignore_modules" option to TracebackException.format()

[Antoine Pitrou]

Antoine Pitrou added the comment:

I think a more general facility to strip unwanted frames from traceback objects 
would be useful for more people (including importlib, I think).  i.e. actually 
mutate the traceback object, not remove the unwanted frames when printing 
(since it only works if you're the one doing the printing).

(note mutating a traceback object is very easy in C, it's just not possible in 
pure Python, except perhaps with nasty ctypes hacks)

Also, the `ignore_modules` would be more powerful as a generic `filter` 
callback, I think.

--
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[issue20580] IDLE should support platform-specific default config defaults

[Terry J. Reedy]

Terry J. Reedy added the comment:

Ned, config.py currently has

def GetCurrentKeySet(self):
"Return CurrentKeys with 'darwin' modifications."
result = self.GetKeySet(self.CurrentKeys())

if sys.platform == "darwin":
# OS X Tk variants do not support the "Alt" keyboard modifier.
# So replace all keybingings that use "Alt" with ones that
# use the "Option" keyboard modifier.
# TODO (Ned?): the "Option" modifier does not work properly for
#Cocoa Tk and XQuartz Tk so we should not use it
#in default OS X KeySets.
for k, v in result.items():
v2 = [ x.replace('

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[issue28972] Document all "python -m" utilities

[Aaron Hall]

Aaron Hall added the comment:

I like this idea too, but perhaps it should just be a multi-column bulleted 
list (under the -m flag at 
https://docs.python.org/3/using/cmdline.html#interface-options) with links to 
the respective Standard Library doc?

Then we just ensure the documentation for the module is complete with examples 
for the command line usage.

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[issue31401] Dynamic compilation that uses function in comprehension fails when compiled inside function

[Vedran Čačić]

Vedran Čačić added the comment:

List comprehension is irrelevant here, any nested function has the same 
problem. And the inner name doesn't have to refer to a function. Also, 
compilation as a separate step is not necessary.

So the minimal example is

src = '''\
a = 5
def g(x): return a + x
print(g(3))
'''
def comp(): exec(src)
comp()

But I'm not sure if it is a bug at all. If you write explicitly

exec(src, {})

you get a result 8 without problem. The docs say

...if the optional parts are omitted, the code is executed in the current 
scope.

And the current scope inside comp is "fast locals", where you can't really make 
new names. Maybe exec should raise an exception then, but it surely cannot just 
"work" inside fast locals scope.

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[issue31401] Dynamic compilation that uses function in comprehension fails when compiled inside function

[R. David Murray]

R. David Murray added the comment:

This is indeed not a bug, it it a consequence of the scoping rules.

What surprises me is that it works without passing in an explicit scope in in 
3.7.  I'm not sure what we changed that makes that true.

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[issue27240] 'UnstructuredTokenList' object has no attribute '_fold_as_ew'

[R. David Murray]

R. David Murray added the comment:

I managed to finish the rewrite, and it does fix this issue.  I'll probably 
post the PR tomorrow.

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[issue30788] email.policy.SMTP.fold() issue for long filenames with spaces

[R. David Murray]

R. David Murray added the comment:

Thanks for the PR, but I've managd to finish my rewrite of the folder so that 
it not only doesn't traceback on this, but correctly folds it.  I'll probably 
post the PR tomorrow.

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[issue31373] demoting floating float values to unrepresentable types is undefined behavior

[Mark Dickinson]

Mark Dickinson added the comment:

There's a (to my mind) unfortunate change in behaviour here. Under normal IEEE 
754 rules, some C double values larger than FLT_MAX still round to FLT_MAX 
under conversion to float.

Python 3.6:

>>> import struct
>>> x = 3.40282356e38
>>> struct.pack(">> import struct
>>> x = 3.40282356e38
>>> struct.pack("", line 1, in 
OverflowError: float too large to pack with f format

The original behaviour is correct with respect to IEEE 754; the new behaviour 
is not. I think this is a case where the cure is worse than the disease.

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[issue31373] demoting floating float values to unrepresentable types is undefined behavior

[Benjamin Peterson]

Benjamin Peterson added the comment:

I agree that's bad. Do you know a way to get the IEEE 754 rounding behavior 
without invoking C undefined behavior?

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[issue15427] Describe use of args parameter of argparse.ArgumentParser.parse_args

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Thanks, David. I merged the backport PRs. Closing this.

--
nosy: +Mariatta
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue25684] ttk.OptionMenu radiobuttons aren't unique between two instances of OptionMenu

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset e1847ea4a9bdc7549893091a63e14f2afbdecc32 by Mariatta (Cheryl 
Sabella) in branch '2.7':
bpo-25684: ttk.OptionMenu radiobuttons weren't unique (GH-2276) (GH-2960)
https://github.com/python/cpython/commit/e1847ea4a9bdc7549893091a63e14f2afbdecc32


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nosy: +Mariatta

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[issue25684] ttk.OptionMenu radiobuttons aren't unique between two instances of OptionMenu

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Fixed and backported to 3.6 and 2.7.
Thanks, all!

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

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