[issue30707] Incorrect description of "async with" in PEP492 and documentation

[Nick Coghlan]

Nick Coghlan added the comment:

The specific issue is that early exits from an "async with" statement are 
actually defined the same way they for synchronous with statements: exiting 
early via return, break, or continue, is the same as reaching the end of the 
try block.

However, that's not what the documentation currently says: it describes "async 
with" in terms of try/except/else, which isn't correct.

--
nosy: +ncoghlan, yselivanov

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[issue30708] Ensure that the result of PyUnicode_AsWideCharString() doesn't contain null characters if size is not returned

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
pull_requests: +2333

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[issue30708] Ensure that the result of PyUnicode_AsWideCharString() doesn't contain null characters if size is not returned

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

The second parameter of the PyUnicode_AsWideCharString() function

wchar_t* PyUnicode_AsWideCharString(PyObject *unicode, Py_ssize_t *size)

is a pointer to Py_ssize_t. The size of created wchar_t array is saved on this 
pointer if it is not NULL. If NULL is passed as the second argument, the only 
way to determine the size of the wchar_t string is using wcslen(). But if the 
string contains the null characters, it looks truncated for wcslen() and other 
C API functions.

Reliable code should always pass the non-NULL second argument and check that 
wcslen() is equal to the returned string size. See for example the code in 
Modules/_io/winconsoleio.c. Passing NULL as the second argument is unsafe. But 
most code doesn't do such check (see all other usages of 
PyUnicode_AsWideCharString(..., NULL)). And this check complicates the callers 
code.

I propose to make the check for null characters inside of 
PyUnicode_AsWideCharString() if NULL is passes as the second argument. This 
will fix all unsafe usages of PyUnicode_AsWideCharString() and allow to 
simplify the reliable code.

This issue fixes the part of issue13617.

--
components: Interpreter Core, Unicode
messages: 296401
nosy: ezio.melotti, haypo, serhiy.storchaka, steve.dower
priority: normal
severity: normal
stage: patch review
status: open
title: Ensure that the result of PyUnicode_AsWideCharString() doesn't contain 
null characters if size is not returned
type: enhancement
versions: Python 3.7

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[issue30707] Incorrect description of "async with" in PEP492 and documentation

[Damien George]

New submission from Damien George:

The behaviour of the "async with" statement in CPython does not match the 
description of it in PEP492, nor the language documentation.  The 
implementation uses a try/except/finally block, while the PEP and documentation 
describe the behaviour using a try/except/else block.  The PEP and 
documentation should be updated to reflect the true intention of "async with".

--

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[issue30707] Incorrect description of "async with" in PEP492 and documentation

[Damien George]

Changes by Damien George :


--
assignee: docs@python
components: Documentation
nosy: Damien George, docs@python
priority: normal
severity: normal
status: open
title: Incorrect description of "async with" in PEP492 and documentation
type: behavior
versions: Python 3.5, Python 3.6, Python 3.7

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[issue13617] Reject embedded null characters in wchar* strings

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
assignee:  -> serhiy.storchaka

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[issue30629] lower() is called twice

[成瀬基樹]

Changes by 成瀬基樹 :


--
pull_requests: +2332

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[issue10079] idlelib for Python 3 with Guilherme Polo GSoC enhancements

[Vedran Čačić]

Vedran Čačić added the comment:

I'd just like to say that I like

   A configuration preference that permits writing and running
   test programs from the editor without having to save the file
   (you're warned upon quitting whether to save).

very much, it would save me a lot of time, and would like to see it in some 
future version of IDLE. I can even try to implement it myself, but of course, 
it would be much better if Terry did it.

--
nosy: +veky

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[issue30629] lower() is called twice

[成瀬基樹]

成瀬基樹 added the comment:

It will be highlight of my programmer life. Thank you. That pull request is 
just the beginning, not the last.

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[issue5680] Command-line arguments when running in IDLE

[veganaiZe]

Changes by veganaiZe :


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nosy: +veganaiZe

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[issue30701] Exception parsing certain invalid email address headers

[Tim Bell]

Tim Bell added the comment:

I'm using the email package to ingest a firehose of spam; spammers aren't known 
for following norms or standards, so it's not surprising that I'm discovering 
lots of edge cases.

I'll supply fixes for what I find where I can, time permitting.

--

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[issue30420] Clarify kwarg handing for subprocess convenience APIs

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset 0a4fe1d8578fa59004518f8deef137282be4d71a by Mariatta in branch 
'3.6':
[3.6] bpo-30420: List cwd parameter in subprocess convenience APIs (GH-1685) 
(GH-2253)
https://github.com/python/cpython/commit/0a4fe1d8578fa59004518f8deef137282be4d71a


--
nosy: +Mariatta

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[issue17583] IDLE HOWTO

[Terry J. Reedy]

Terry J. Reedy added the comment:

Thanks.  This is helpful and got me started thinking.

I don't want to duplicate the reference doc too much, but a reference is just 
that, a reference.  The menu items are discussed in the order they appear, not 
the order a beginner might use the most common ones.

Judging from Stackoverflow questions, covering platform specifics is needed.  
People seem to miss the following: Python runs IDLE; IDLE hands user code to 
Python to execute.  Output and error messages come from Python, not IDLE.  If 
you want python to import 3rd party modules, one must install the module for 
the Python used to run IDLE.  (I have answered at least 3 variations of this 
question.) Anyway, I realize that I have a source of frequent beginner 
questions and problems.  If we have answers in a How-To, I can quote and 
suggest that people read it.

Amit, do you wish to continue with this?

--

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[issue17583] IDLE HOWTO

[Cheryl Sabella]

Cheryl Sabella added the comment:

I think it's a good start, but may need some tweaking.  For example, the
Menu options should probably somehow stand out from the rest of the text.

I think it would be useful for a beginner, depending on how much of a
beginner they are and how they got to this page.  For example, if I wanted
to learn Python and had no prior programming experience, most likely I
would google 'learn python' (or maybe even just 'learn to program') and
check out those links.  Some results, like the Tutorial in the python.org
docs, focus on getting Python installed and using the interactive
interpreter.  There doesn't seem to be anything in the python.org docs
(except for the FAQ) that suggest using IDLE.  Although, the FAQ might be
one of the first places a beginner would look, so maybe a link from there
to the HOWTO would be helpful.  I think showing how to install IDLE and use
it is important, and that alone would make this page useful.  The current
IDLE doc page has the command line usage in the middle of the page, but
doesn't really just answer how do I install it and how do I run it?

So, assuming a beginner is following some tutorial, they get to a point
where they need an editor.  Following the instructions for installing any
program can be tricky.  Heck, even installing Python might have been
tricky, so good for them if they got this far.  But, without any
instructions for getting IDLE to run, they are left to googling for it.  It
would be great for the python docs can have a step by step installation
instruction and even troubleshooting.  Then, as this HOWTO does, explain
what opens up and how to use the editor, etc.  As I've recently experienced
with git, I find it frustrating to spend half a day trying to get something
to work when it should be easy.  This page could be a one page
introduction/reference so that someone doesn't have to cobble together
answers from all over the internet to questions they didn't even know to
ask.

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[issue18152] Idle: add 2.7 backport script

[Terry J. Reedy]

Changes by Terry J. Reedy :


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

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[issue18316] Idle 2.7: update to simplify cross-version patches

[Terry J. Reedy]

Terry J. Reedy added the comment:

I am no longer patching IDLE for 2.7, partly because of the testing issue.

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

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[issue18583] Idle: enhance FormatParagraph

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
versions: +Python 3.7

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[issue10079] idlelib for Python 3 with Guilherme Polo GSoC enhancements

[Ned Deily]

Ned Deily added the comment:

House cleaning: much time has passed since this issue was originally opened and 
the state of IDLE development has changed dramatically for the better since 
then, thanks, in large part, to Terry taking charge.  I suspect that nearly all 
of the individual items here have already been addressed as separate issues.  
But, as I no longer have time to follow IDLE development, I am going to 
reassign this issue to Terry for a final review and closing.

--
assignee: ned.deily -> terry.reedy
versions: +Python 3.7 -Python 2.7, Python 3.3, Python 3.4

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[issue18583] Idle: enhance FormatParagraph

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
versions: +Python 3.6 -Python 2.7, Python 3.3, Python 3.4

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[issue20403] Idle options dialog: add help

[Terry J. Reedy]

Terry J. Reedy added the comment:

Help has been restored, but perhaps not with this patch.  Before closing, I 
should check if there is anything I want to use.

--
assignee:  -> terry.reedy
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.3, Python 3.4

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[issue21359] IDLE Redo command accelerator acts as Undo with current OS X Cocoa Tk 8.5.15

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
nosy: +terry.reedy
stage:  -> test needed
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue21473] Idle: test startup scripts.

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
assignee:  -> terry.reedy
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 3.4, Python 3.5

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[issue21474] Idle: updata fixwordbreaks() for unicode identifiers

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
assignee:  -> terry.reedy
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 3.4, Python 3.5

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[issue18504] IDLE: Improve Mock_Text

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
title: IDLE:Improvements- Improving Mock_Text -> IDLE: Improve Mock_Text

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[issue18504] IDLE:Improvements- Improving Mock_Text

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.3, Python 3.4

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[issue21632] Idle: sychronize text files across versions as appropriate.

[Terry J. Reedy]

Terry J. Reedy added the comment:

Help.txt has been replaced by help.html, generated from idle.html, generated 
from idle.rst, which is so far kept in sync for current maintenance and feature 
versions.  Readme.txt has been replaced and is in sync for 3.6 and 7.  The 3.6 
and 3.7 code have one line difference in test_calltips.

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

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[issue21632] Idle: sychronize text files across versions as appropriate.

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue30706] EmailMessage Object Creation

[R. David Murray]

R. David Murray added the comment:

This isn't the place to get help on Python coding, but since this is a 
relatively new API I'll give you a pointer, and then you can tell me where the 
docs need improvement :)

If you do message_from_string(yourstring, policy=email.policy.default), you 
should get back an EmailMessage object.

That said, your example does return an EmailMessage for me, if I put a string 
in place of your self.original_message, which must be something from your 
program.  However, that won't *work* very well, because the policy is set to 
Compat32, and Compat32 and EmailMessage aren't designed to work together.  A 
lot of things will work fine, but you'll get some weird errors.  However, I 
don't think that that is worth a documentation note, since it is a logical 
consequence of using _class=EmailMessage without specifying a policy.

--

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[issue21673] Idle: hilite search terms in hits in Find in Files output window

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue21624] Idle: polish htests

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
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versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue21787] Idle: make 3.x Hyperparser.get_expression recognize ...

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
assignee:  -> terry.reedy
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 3.4, Python 3.5

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[issue17506] Improve IDLE news handling

[Terry J. Reedy]

Terry J. Reedy added the comment:

To minimize news merge headaches, I have been pushing news items separately 
from IDLE patches, usually in batches of at least two.  It has not been too 
much bother to copy from NEWS.txt to NEWS.

If and when news handling is automated, I will request that items directed at 
the IDLE section also go to NEWS.txt.

--
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.3, Python 3.4

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[issue30576] http.server should support HTTP compression (gzip)

[Glenn Linderman]

Glenn Linderman added the comment:

@martin sez:
It may be reasonable to serve the Content-Encoding field based on the stored 
file though. If the client requests file “xyz”, there should be no encoding, 
but if the request was explicitly for “xyz.gz”, the server could add 
Content-Encoding. But I suspect this won’t help Pierre.

I think this suggestion violates the mapping between file name and expected 
data type: if the request is for "xyz.gz" then the requester wants the 
compressed form of the file "xyz", but adding the Content-Encoding header would 
cause (most known) browsers to decode the file in the network stack, and the 
resulting file displayed or saved would be the uncompressed form, with the 
compressed name.

While my implementation of the compression technique I outlined is, in fact, in 
a higher-level server which runs on top of either http.server or Apache, my 
perception of having to implement it at that level was that this is the sort of 
thing that the low-level server should be capable of, via configuration 
settings.

I note that for Apache, both mod_deflate and mod_brotli support either 
on-the-fly or pre-compressed data files, so it would appear that the authors of 
those modules agree with my perception that this should be a low-level server 
configuration thing.

Your example of a /tmp server, Martin, serves to point out the benefits of 
having pre-compressed files... much less storage is required.  I haven't looked 
at the pull request in detail: I'm not particularly interested in on-the-fly 
compression, but I wasn't certain until Pierre responded exactly what he was 
proposing.

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[issue30689] len() and iter() of ChainMap don't work with unhashable keys

[R. David Murray]

R. David Murray added the comment:

IMO, it would actually be surprising for ChainMap to support unhashable keys.  
In Python, as Raymond indicates, "mapping" is pretty much synonymous with 
'dict-like', and it would be where that was *not* true that we might add extra 
documentation.

--
nosy: +r.david.murray

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[issue22010] Idle: better management of Shell window output

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue22209] Idle: add better access to extension information

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
assignee:  -> terry.reedy
components: +IDLE
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue14944] Setup & Usage documentation for pydoc, IDLE, & 2to3

[Mark Lawrence]

Changes by Mark Lawrence :


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nosy:  -BreamoreBoy

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[issue30697] segfault in PyErr_NormalizeException() after memory exhaustion

[Xavier de Gaye]

Xavier de Gaye added the comment:

The two issues you are refering to are the instruments that are needed to 
reproduce the problem. The reference to PR 2035 is only made here to argue 
about the question of the correct way to control the successive calls to 
PyErr_NormalizeException(). This question is relevant here since one of the 
problems raised by this issue is that in the case of memory exhaustion the user 
is given a RecursionError as the cause of the problem.

FWIW PR 2035 transforms the tail recursion in PyErr_NormalizeException() into a 
loop (as compilers would do during optimization). An infinite recursion becomes 
then an infinite loop instead. The advantage is that there is no stack 
overflow. The drawback is that it is an infinite loop.

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[issue30495] IDLE: modernize textview module

[Cheryl Sabella]

Cheryl Sabella added the comment:

Thanks, Terry.  I've pulled the textview changes out and made a PR.  I know
you had said there can be more than one PR for a bug, so I did it under
this number.  Hope that was the right thing to do.

I'll take a look at help_about separately.

On Mon, Jun 19, 2017 at 6:16 PM, Cheryl Sabella 
wrote:

>
> Changes by Cheryl Sabella :
>
>
> --
> pull_requests: +2331
>
> ___
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> 
> ___
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[issue24212] Idle, 2.7, backport idlelib.__main__, enable py -m idlelib

[Terry J. Reedy]

Terry J. Reedy added the comment:

I wanted this for the same reason you backported test.__main__ in #30223, but 
I'm not going to fix the problems.

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[issue30495] IDLE: modernize textview module

[Cheryl Sabella]

Changes by Cheryl Sabella :


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pull_requests: +2331

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[issue17583] IDLE HOWTO

[Terry J. Reedy]

Terry J. Reedy added the comment:

Cheryl, what do you think of the revised patch?  I imagine it needs some 
updating for *nix, but does it seem useful to a beginner?

--
nosy: +csabella
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.3, Python 3.4

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[issue14944] Setup & Usage documentation for pydoc, IDLE, & 2to3

[Terry J. Reedy]

Terry J. Reedy added the comment:

I am not sure where installed scripts are documented in Using Python.  'idle' 
and 'idle3' are not installed on Windows.

--
title: Setup & Usage documentation for pydoc, idle & 2to3 -> Setup & Usage 
documentation for pydoc, IDLE, & 2to3
versions: +Python 3.6, Python 3.7 -Python 3.4, Python 3.5

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[issue23431] Idle Application Not Responding

[Terry J. Reedy]

Terry J. Reedy added the comment:

No followup, no issue.  If IDLE did not run but python did, the next thing to 
have tried would have been 
.../python3.4 -c "import tkinter; tkinter.Tk()"

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

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[issue18330] Fix idlelib.PyShell.build_subprocess_arglist use of __import__

[Mark Lawrence]

Changes by Mark Lawrence :


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[issue18330] Fix idlelib.PyShell.build_subprocess_arglist use of __import__

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
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versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue24212] Idle, 2.7, backport idlelib.__main__, enable py -m idlelib

[Terry J. Reedy]

Terry J. Reedy added the comment:

I am no longer patching IDLE for 2.7.

--
assignee:  -> terry.reedy
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resolution:  -> wont fix
stage: needs patch -> resolved
status: open -> closed

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[issue30706] EmailMessage Object Creation

[Michael Salsone]

New submission from Michael Salsone:

I am looking to use the get_body() method from email.message.EmailMessage, but 
I am unable to create an object of this type. I am attempting to create an 
object of this from message_from_string (as well as some of the other 
email.parser methods). But it won't allow me to change the class to 
email.message.EmailMessage. I've read through the source for some this code, 
but I don't see where you thread the needle here, is it even possible?

Example:
from email.message import EmailMessage
email.message_from_string(self.original_message, _class=EmailMessage)

--
components: email
messages: 296378
nosy: Michael Salsone, barry, r.david.murray
priority: normal
severity: normal
status: open
title: EmailMessage Object Creation
type: behavior
versions: Python 3.6

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[issue24936] Idle: handle 'raise' properly when running with subprocess (2.7)

[Terry J. Reedy]

Terry J. Reedy added the comment:

The Runtime error is what current py 3 raises.  TypeError is what 2.7.13 
raises. Since the only problem is for someone who read the doc running 'raise' 
in IDLE 2.7  in -n mode, closing.

--
assignee:  -> terry.reedy
components: +IDLE
resolution:  -> wont fix
stage: needs patch -> resolved
status: open -> closed

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[issue30703] regrtest hangs on the master branch

[STINNER Victor]

Changes by STINNER Victor :


--
title: test_multiprocessing_forkserver hangs on x86-64 Sierra 3.x. buildbot -> 
regrtest hangs on the master branch

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[issue30703] test_multiprocessing_forkserver hangs on x86-64 Sierra 3.x. buildbot

[STINNER Victor]

STINNER Victor added the comment:

Different issue, but same behaviour: test hangs and then killed by buildbot, 
whereas a single test was still running.

See also bpo-30351 which tracks similar bugs, but on Python 2.7.

I really hate such bugs :-(

http://buildbot.python.org/all/builders/AMD64%20Debian%20root%203.x/builds/928/steps/test/logs/stdio

...
0:15:10 load avg: 0.52 [404/406] test_unicodedata passed -- running: test_pydoc 
(401 sec)
0:15:10 load avg: 0.52 [405/406] test_exception_hierarchy passed -- running: 
test_pydoc (401 sec)

command timed out: 1200 seconds without output running ['make', 'buildbottest', 
'TESTOPTS=-j2', 'TESTPYTHONOPTS=', 'TESTTIMEOUT=900'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=2111.415970

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[issue24996] IDLE: debugger local/global vars should not be editable

[Terry J. Reedy]

Terry J. Reedy added the comment:

I believe an Entry validator can reject all keystrokes.  

It seem feasible that globals could be changed.  I could look at what pdb can 
do and if so, how.

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[issue24996] IDLE: debugger local/global vars should not be editable

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
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components: +IDLE
stage:  -> test needed
versions: +Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue25015] Idle: scroll Text faster with mouse wheel

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
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[issue25031] IDLE - file list improvements

[Terry J. Reedy]

Changes by Terry J. Reedy :


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stage:  -> test needed
versions: +Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue25036] IDLE - infrastructure changes so editors don't assume they're in a toplevel

[Terry J. Reedy]

Changes by Terry J. Reedy :


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stage:  -> test needed
versions: +Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue20917] Idle: Enhance font change notification system

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue18444] IDLE: Mac OS X pressing ctrl-A in Python shell moved cursor before the prompt, which then makes the keyboard unresponsive.

[Terry J. Reedy]

Terry J. Reedy added the comment:

I closed #17060 as a duplicate of this.  Roger Serwy there said
 "The .home_callback() in Lib/idlelib/EditorWindow.py contains the logic from 
#3851 for placing the cursor at the beginning of the prompt, but it requires 
that a key combination be bound to the beginning-of-line virtual event.

Should we append " " to the begining-of-line config in 
Lib/idlelib/config-keys.def ?"

--
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stage:  -> test needed
type:  -> behavior

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[issue18444] IDLE: Mac OS X pressing ctrl-A in Python shell moved cursor before the prompt, which then makes the keyboard unresponsive.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue17060] IDLE -- jump to home should not go past the PS1 and PS2 prompts

[Terry J. Reedy]

Terry J. Reedy added the comment:

I am closing this instead of #18444 because the latter has more extensive 
discussion.

--
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> IDLE: Mac OS X pressing ctrl-A in Python shell moved cursor 
before the prompt, which then makes the keyboard unresponsive.

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[issue25090] IDLE: remove noisy icons from class (module) browser

[Terry J. Reedy]

Changes by Terry J. Reedy :


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stage:  -> test needed
versions: +Python 3.7 -Python 2.7, Python 3.5

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[issue18064] IDLE: add current directory to open_module

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue18064] IDLE: add current directory to open_module

[Terry J. Reedy]

Terry J. Reedy added the comment:

For IDLE development, I would love to have idlelib and idlelib.idle_test on the 
open line.  Perhaps this should be user configurable: Favorite directories for 
opening files.

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[issue18318] Idle: stop depending on console output

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue21674] Idle: Add 'find all' in current file

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue30698] asyncio sslproto do not shutdown ssl layer cleanly

[Alexander Mohr]

Changes by Alexander Mohr :


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[issue30701] Exception parsing certain invalid email address headers

[R. David Murray]

R. David Murray added the comment:

Yep, you found an edge case I didn't write a test for.  The defect should get 
added to the header object during parsing.  (Those are supposed to get copied 
to the message object...)

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[issue30495] IDLE: modernize textview module

[Terry J. Reedy]

Terry J. Reedy added the comment:

You were waiting on my review of the revised patch.

1. Remove the help_about changes.  Reworking help_about is #24813.  I just 
reviewed Mark Roseman's patch.  I do not want the button frames because I would 
like to get rid of the buttons.  Besides that, I don't think the classes give 
enough benefit.  If I wanted to keep the buttons, create_py/idle/button 
functions might be considered.  You can attach to that issue a minimal change 
patch or PR that splits off AboutFrame from AboutDialog (the window).  Leave 
the latter name alone for now to minimize changes needed in other files.  We 
can then consider adding pieces of what Mark did one at a time.

2. I downloaded the patch, deleted help_about changes, applied, and tested.

Test_help_about needs two  insertions of '.textframe'  to solve
==
ERROR: test_file_buttons (idlelib.idle_test.test_help_about.LiveDialogTest)
Test buttons that display files.
--
Traceback (most recent call last):
  File "f:\dev\3x\lib\idlelib\idle_test\test_help_about.py", line 67, in 
test_file_buttons
dialog._current_textview.text.get('1.0', '1.end'))
AttributeError: 'TextviewWindow' object has no attribute 'text'

==
ERROR: test_printer_buttons (idlelib.idle_test.test_help_about.LiveDialogTest)
Test buttons whose commands use printer function.
--
Traceback (most recent call last):
  File "f:\dev\3x\lib\idlelib\idle_test\test_help_about.py", line 48, in 
test_printer_buttons
dialog._current_textview.text.get('1.0', '1.end'))
AttributeError: 'TextviewWindow' object has no attribute 'text'

Make a PR this time so I can review a side-by-side diff and retest.

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[issue25218] Automate creation of idlelib/help.html from Doc/.../idle.html

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue25219] Update doc for Idle command line options.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue25198] Idle: improve idle.html help viewer.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue25244] Idle: refine right-click behavior

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue25522] IDLE: warn if save-as name matches stdlib name

[Terry J. Reedy]

Changes by Terry J. Reedy :


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components: +IDLE
versions: +Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue22742] IDLE shows traceback when printing non-BMP character

[Terry J. Reedy]

Changes by Terry J. Reedy :


--
assignee:  -> terry.reedy
components: +IDLE -Library (Lib)
versions: +Python 3.6, Python 3.7 -Python 2.7, Python 3.4, Python 3.5

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[issue26353] IDLE: Saving Shell should not add \n

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue22893] Idle: __future__ does not work in startup code.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue27099] IDLE: turn builting extensions into regular modules

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue27388] IDLE configdialog: reduce multiple references to Var names

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue27452] IDLE: Cleanup config code

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue27465] IDLE:Make help source menu entries unique and sorted.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue27477] IDLE: Switch search dialogs to ttk widgets, and other refinement

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Changes by Steve Dower :


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

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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Steve Dower added the comment:

Ned - this has been merged into 3.6 branch and the buildbots look good.

Feel free to move the NEWS item around and/or cherrypick into 3.6.2 at your 
leisure.

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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Steve Dower added the comment:


New changeset 2c899ccffda92a7f3d4e7a01f14a666504db07b5 by Steve Dower in branch 
'3.5':
bpo-30687: Fixes build scripts to find msbuild.exe and stop relying on 
vcvarsall.bat (#2252) (#2281)
https://github.com/python/cpython/commit/2c899ccffda92a7f3d4e7a01f14a666504db07b5


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[issue28572] IDLE: add tests for config dialog.

[Terry J. Reedy]

Changes by Terry J. Reedy :


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[issue26143] Ensure that IDLE's stdlib imports are from the stdlib

[Terry J. Reedy]

Terry J. Reedy added the comment:

#25488 and #26143 address related issues of sys.path as seen by IDLE and user 
code.  #26143 focuses on what IDLE sees, and user modules shadowing IDLE 
modules, #25488 focuses on what user code sees, and the presence of idlelib in 
sys.path making buggy code work.  It includes startup information relevant to 
#26143 also.  Both should be solved by patching IDLE in same place.

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[issue25488] IDLE: Remove '', user_dir, and idlelib from sys.path when added

[Terry J. Reedy]

Terry J. Reedy added the comment:

#25488 and #26143 address related issues of sys.path as seen by IDLE and user 
code.  #26143 focuses on what IDLE sees, and user modules shadowing IDLE 
modules, #25488 focuses on what user code sees, and the presence of idlelib in 
sys.path making buggy code work.  It includes startup information relevant to 
#26143 also.  Both should be solved by patching IDLE in same place.

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[issue30450] Pull Windows dependencies from GitHub rather than svn.python.org

[Steve Dower]

Steve Dower added the comment:

Zach, I just spotted this build log, that appears to have failed to download 
nuget.exe: 
http://buildbot.python.org/all/builders/AMD64%20Windows7%20SP1%203.6/builds/339/steps/compile/logs/stdio

Guessing the bot is only succeeding because it currently has all the 
dependencies. Maybe we should consider just checking in nuget.exe?

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[issue30671] dict: improve lookup function

[Tim Peters]

Tim Peters added the comment:

BTW, I should have spelled this out earlier:  recall that x and y collide on 
the first probe if and only if

x = y (mod 2**k)   [1]

The second probe never happens unless they do collide on the first probe, so 
when looking at the second probe we can assume that [1] is true.  Since [1] is 
true,

5*(x % 2**k) + 1 = 5*(y % 2**k) + 1

is also true (and there's nothing special here about "5" and "1" - it would 
hold for any multiplier and any addend).  The second probe just adds (x >> 5) % 
2**k to the left side of that and (y >> 5) % 2**k to the right side of that.  
Therefore the second probes collide if and only if (in addition to [1])

x >> 5 = y >> 5 (mod 2**k)  [2]

The primary point is that any analysis that ignores the higher-order bits is 
missing the primary thing that matters ;-)

[2] does reveal some potential weaknesses in the scheme.  For example, if k < 
5, some bits of the hash code have no effect on the probe sequence (e.g., if 
k==1, the first probe depends only on the hash code's last bit, and if there's 
collision then a second-probe collision depends only on bit 2**5 -- bits 2**1 
through 2**4 are effectively ignored - but the table only has 2 slots in the 
k==1 case).  Decreasing PERTURB_SHIFT works against that.

OTOH, if k > 5, some of the bits that contributed to [1] being true also feed 
into whether [2] is true.  Increasing PERTURN_SHIFT works against that.

Setting PERTURB_SHIFT=k (i.e., make it depend on the number of slots) avoids 
both, but dosen't appear to actually perform better than always using 5.

The rub is that collisions just aren't a real problem under the current scheme 
- and hashsim.py shows it's doing about as well on that count as the 
theoretical gold standard ("uniform hashing").

If people have time to spend on dicts, I'd rather see them pursue entirely 
different methods, that guarantee to slash the _worst_ case number of probes.  
hashsim.py also shows that while long collision chains are rare, they do occur 
(and they also occur under "uniform hashing").  Then, e.g., we could drop the 
annoying "hash randomization" cruft.  For example, dig into "cuckoo hashing" 
and "Robin Hood hashing".  Just be warned that, regardless of scheme, the 
devil's in the details :-(

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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Steve Dower added the comment:


New changeset 06d6e3d0bb5b8a3d3105289034953a8014356a0b by Steve Dower in branch 
'3.6':
bpo-30687: Fixes build scripts to find msbuild.exe and stop relying on 
vcvarsall.bat (#2252) (#2280)
https://github.com/python/cpython/commit/06d6e3d0bb5b8a3d3105289034953a8014356a0b


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[issue26143] Ensure that IDLE's stdlib imports are from the stdlib

[Terry J. Reedy]

Changes by Terry J. Reedy :


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components: +IDLE

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[issue30422] Add roadmap.txt section to idlelib

[Terry J. Reedy]

Changes by Terry J. Reedy :


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components: +IDLE

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[issue27609] IDLE completions: format, factor, and fix

[Terry J. Reedy]

Changes by Terry J. Reedy :


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components: +IDLE

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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Changes by Steve Dower :


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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Changes by Steve Dower :


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[issue30687] build.bat should locate msbuild.exe rather than vcvarsall.bat

[Steve Dower]

Steve Dower added the comment:


New changeset 40a23e88994aca92c83c8e84ab8b8cdc11d7ec54 by Steve Dower in branch 
'master':
bpo-30687: Fixes build scripts to find msbuild.exe and stop relying on 
vcvarsall.bat (#2252)
https://github.com/python/cpython/commit/40a23e88994aca92c83c8e84ab8b8cdc11d7ec54


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[issue30681] email.utils.parsedate_to_datetime() should return None when date cannot be parsed

[R. David Murray]

R. David Murray added the comment:

I'll make one argument in favor of retaining the exception, and if that doesn't 
fly then I agree to the solution and will try to review the PR soon.

The argument is this: if parsedate_to_datetime raises an error, you get 
information about *why* the date was invalid, which you don't get from a 'None' 
return.  It is my thought that this would be the most useful behavior for the 
cases where you call it directly (otherwise, why call it directly?)

(And as far as the doc issue goes, you are correct Barry that the current docs 
don't document the difference in the error case; I noted in another issue that 
that "should be fixed"...which is only the case now if you agree to my argument 
above :)

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[issue29406] asyncio SSL contexts leak sockets after calling close with certain Apache servers

[Nikolay Kim]

Nikolay Kim added the comment:

Let’s close this issue then. I don’t like it anyway.

> On Jun 19, 2017, at 10:21 AM, Grzegorz Grzywacz  
> wrote:
> 
> 
> Grzegorz Grzywacz added the comment:
> 
> This is not problem with madis-data.ncep.noaa.gov not doing ssl shutdown, 
> this is problem with asyncio not doing it.
> 
> Patch from this #30698 issue fix this too.
> 
> --
> nosy: +grzgrzgrz3
> 
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[issue29406] asyncio SSL contexts leak sockets after calling close with certain Apache servers

[Grzegorz Grzywacz]

Grzegorz Grzywacz added the comment:

This is not problem with madis-data.ncep.noaa.gov not doing ssl shutdown, this 
is problem with asyncio not doing it.

Patch from this #30698 issue fix this too.

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[issue30697] segfault in PyErr_NormalizeException() after memory exhaustion

[Brett Cannon]

Brett Cannon added the comment:

So is PR 2035 a fix for this? This discussion on this exact problem seems to 
have ended up spanning a couple issues and a PR so I'm losing track of where 
things sit at the moment.

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