[issue23397] PEP 431 implementation

[Berker Peksag]

New submission from Berker Peksag:

I have an outdated and WIP patch to implement PEP 431 on GitHub: 
https://github.com/berkerpeksag/cpython Hopefully, I will complete my work 
before beta 1.

--
assignee: berker.peksag
components: Library (Lib)
messages: 235423
nosy: berker.peksag
priority: normal
severity: normal
stage: needs patch
status: open
title: PEP 431 implementation
type: enhancement
versions: Python 3.5

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[issue23285] PEP 475 - EINTR handling

[STINNER Victor]

STINNER Victor added the comment:

Would it be possible to push the latest patch right now, and fix remaining 
issues (if there are known issues?), before Python 3.4 alpha 1? According to 
the PEP 478, the alpha 1 is scheduled for this sunday (February 8, 2015).

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[issue18932] Optimize selectors.EpollSelector.modify()

[STINNER Victor]

STINNER Victor added the comment:

Updated patch with a less surprising _modify() method:
- the default implementation simply calls unregister() + register(), as before
- drop SelectSelector._modify(): calling unregister() + register() is just fine

--
Added file: http://bugs.python.org/file38018/selectors_optimize_modify-2.patch

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[issue18932] Optimize selectors.EpollSelector.modify()

[STINNER Victor]

STINNER Victor added the comment:

> - drop SelectSelector._modify(): calling unregister() + register() is just 
> fine

I checked with strace: PollSelector.modify() doesn't require any syscall, so I 
propose to also drop it (to just call unregister + register). What do you think?

I would like to reduce the number of syscalls, calling a C function of the 
glibc is cheap.

> This is a follow up of issue 16853 (see comment 
> http://bugs.python.org/issue16853#msg196984).

"(...) the problem with unregister() + register() vs a real
modify (e.g. EPOLL_CTL_MOD) is that it's subject to a race condition,
if an event fires during the short window where the FD isn't
registered anymore."

The race condition only occurs with selectors which have a state machine in the 
kernel: epoll, kqueue, devpoll. SelectSelector and PollSelector are state-less 
(in the kernel, the state is build for a single syscall and then destroyed). Am 
I right?

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[issue23361] integer overflow in winapi_createprocess

[paul]

paul added the comment:

ping

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[issue17911] traceback: add a new thin class storing a traceback without storing local variables

[Nick Coghlan]

Nick Coghlan added the comment:

+1 for having the base __init__ API be the exception triple and then a 
TracebackException.from_exception() class method as an alternate constructor.

However, the redundancy between TracebackException.__init__() and 
TracebackException.from_exc_tuple() feels very strange to me. It leaves the 
__init__ working-but-undocumented and isn't a pattern I can recall seeing 
anywhere else in the standard library.

Would it be possible to just add the from_exception() class method and leave 
the documented (and only) API for building from a triple being the normal 
constructor call?

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[issue21998] asyncio: a new self-pipe should be created in the child process after fork

[STINNER Victor]

STINNER Victor added the comment:

Updated patch:
- drop PollSelector._at_fork(): PollSelector is not shared with the parent 
process
- _at_fork() of BaseEventLoop and SelectorEventLoop now do nothing by default: 
only _UnixSelectorEventLoop._at_fork() handle the fork, nothing is needed on 
Windows
- patch written for Python 3.5, not for Tulip (different directories)

--
Added file: http://bugs.python.org/file38019/at_fork-2.patch

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[STINNER Victor]

STINNER Victor added the comment:

> New changeset 5b5a581d91c8 by Serhiy Storchaka in branch '3.4':
> Issue #22765: Fixed test_gdb failures. Supressed unexpected gdb output.
> https://hg.python.org/cpython/rev/5b5a581d91c8

Since this change, test_gdb fails on "AMD64 OpenIndiana 3.x":
http://buildbot.python.org/all/builders/AMD64%20OpenIndiana%203.x/builds/9176/

See also issue #23381..

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status: closed -> open

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[STINNER Victor]

STINNER Victor added the comment:

A workaround is to check (once) that the command "set print entry-values no" 
and "set print address off" are supported.

Gdb provides its version in the Python API as a string: gdb.VERSION (ex: 
'Fedora 7.8.2-38.fc21').

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is a patch which adds command 'set print entry-values no' only for gdb 
version >= 7.4.

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Added file: http://bugs.python.org/file38020/test_gdb_entry_values.patch

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[issue22079] Ensure in PyType_Ready() that base class of static type is static

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue18982] Add tests for CLI of the calendar module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thanks for your review Berker.

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[issue22941] IPv4Interface arithmetic changes subnet mask

[Søren Løvborg]

Søren Løvborg added the comment:

I take it the silence means that the patch is neither obviously good nor 
obviously bad. :-)

It all comes down to a judgment call: is this a bug, or expected (but 
undocumented) behavior?

In PEP 387 lingo: Is this a "reasonable bug fix"? Or is it a "design mistake", 
thus calling for a FutureWarning first, and the actual change later?

>>> ipaddress.IPv4Interface('1.2.3.4/16') + 1
__main__:1: FutureWarning: Arithmetic on IPv4Interface objects will
change in Python 3.6. If you rely on the current behavior, change
'interface + n' to 'IPv4Interface(interface.ip + n, 32)'

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[issue23285] PEP 475 - EINTR handling

[Antoine Pitrou]

Antoine Pitrou added the comment:

> Would it be possible to push the latest patch right now

It's ok for me. Please watch the buildbots :)

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[issue18982] Add tests for CLI of the calendar module

[Roundup Robot]

Roundup Robot added the comment:

New changeset 28a9da0842aa by Serhiy Storchaka in branch '3.4':
Issue #18982: Add tests for CLI of the calendar module.
https://hg.python.org/cpython/rev/28a9da0842aa

New changeset e057da873673 by Serhiy Storchaka in branch 'default':
Issue #18982: Add tests for CLI of the calendar module.
https://hg.python.org/cpython/rev/e057da873673

New changeset 50a5c262b2e6 by Serhiy Storchaka in branch '2.7':
Issue #18982: Add tests for CLI of the calendar module.
https://hg.python.org/cpython/rev/50a5c262b2e6

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[issue20289] Make cgi.FieldStorage a context manager

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

LGTM.

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[issue18982] Add tests for CLI of the calendar module

[Roundup Robot]

Roundup Robot added the comment:

New changeset f2991b52157e by Serhiy Storchaka in branch '2.7':
Issue #18982: Fixed newlines in calendar CLI tests on Windows.
https://hg.python.org/cpython/rev/f2991b52157e

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[issue18982] Add tests for CLI of the calendar module

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue18932] Optimize selectors.EpollSelector.modify()

[Giampaolo Rodola']

Giampaolo Rodola' added the comment:

I mean something like this (for epoll), as in avoiding to call unregister() / 
register() at all:


diff -r 017e7391ab58 Lib/selectors.py
--- a/Lib/selectors.py  Wed Feb 04 08:37:02 2015 -0800
+++ b/Lib/selectors.py  Thu Feb 05 18:42:26 2015 +0100
@@ -412,6 +412,23 @@
 pass
 return key
 
+def modify(self, fileobj, events, data=None):
+try:
+key = self._fd_to_key[self._fileobj_lookup(fileobj)]
+except KeyError:
+raise KeyError("{!r} is not registered".format(fileobj)) from 
None
+if data != key.data:
+key = key._replace(data=data)
+self._fd_to_key[key.fd] = key
+if events != key.events:
+epoll_events = 0
+if events & EVENT_READ:
+epoll_events |= select.POLLIN
+if events & EVENT_WRITE:
+epoll_events |= select.POLLOUT
+self._epoll.modify(key.fd, epoll_events)
+return key
+
 def select(self, timeout=None):
 if timeout is None:
 timeout = -1


Before the patch:

~/svn/python/3.5$ ./python -m timeit -s 'import os, selectors; 
s=selectors.EpollSelector(); r,w=os.pipe(); s.register(r, 
selectors.EVENT_READ)' 's.modify(r, selectors.EVENT_WRITE); s.modify(r, 
selectors.EVENT_READ)'
10 loops, best of 3: 14.7 usec per loop


After the patch:

~/svn/python/3.5$ ./python -m timeit -s 'import os, selectors; 
s=selectors.EpollSelector(); r,w=os.pipe(); s.register(r, 
selectors.EVENT_READ)' 's.modify(r, selectors.EVENT_WRITE); s.modify(r, 
selectors.EVENT_READ)'
10 loops, best of 3: 3.07 usec per loop

That's equal to about a 4.5x (+450%) speedup if I'm not mistaken.

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[issue23398] calendar.monthrange for February 2015

[Sergiy]

New submission from Sergiy:

>>>print(calendar.monthrange(2015,2))
(6, 28)
February has only 5 weeks.

--
components: Extension Modules
messages: 235440
nosy: skarpovsky
priority: normal
severity: normal
status: open
title: calendar.monthrange for February 2015
type: behavior
versions: Python 3.4

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[issue23397] PEP 431 implementation

[Antoine Pitrou]

Antoine Pitrou added the comment:

That would be great!

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[issue23398] calendar.monthrange for February 2015

[Geoffrey Spear]

Geoffrey Spear added the comment:

"Returns weekday of first day of the month and number of days in month, for the 
specified year and month.".

The 6 means February began on a Sunday, not that there are 6 weeks in the month.

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[issue23398] calendar.monthrange for February 2015

[Ethan Furman]

Ethan Furman added the comment:

https://docs.python.org/3/library/calendar.html#calendar.monthrange

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stage:  -> resolved
status: open -> closed

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[issue17911] traceback: add a new thin class storing a traceback without storing local variables

[Robert Collins]

Robert Collins added the comment:

I can certainly do that; I was aiming to make it fair I guess, given Antoines 
strong feelings on this matter. As long as I'm not piggy-in-the-middle, I don't 
have a care in this regard :)

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[issue22735] Fix various crashes exposed through mro() customization

[Eldar Abusalimov]

Eldar Abusalimov added the comment:

I feel a bit uneasy, but... any news on this?

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[issue17911] traceback: add a new thin class storing a traceback without storing local variables

[Antoine Pitrou]

Antoine Pitrou added the comment:

I just posted some review comments.

I also realized that it posted some older comments that I hadn't submitted 
before... some of them may be obsolete, sorry :-/

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[issue17753] test_zipfile: requires write access to test and email.test

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Here is a patch which skips tests if there are no write access to the installed 
location.

--
keywords: +patch
stage: needs patch -> patch review
versions: +Python 2.7
Added file: http://bugs.python.org/file38021/issue17753.patch

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[issue16806] col_offset is -1 and lineno is wrong for multiline string expressions

[Anthony Sottile]

Changes by Anthony Sottile :


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[issue16806] col_offset is -1 and lineno is wrong for multiline string expressions

[Anthony Sottile]

Anthony Sottile added the comment:

Any updates on this? I'm running into this as well (still a problem in 3.4)

```$ python3.4
Python 3.4.2 (default, Oct 11 2014, 17:59:27) 
[GCC 4.4.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import ast
>>> ast.parse("""'''foo\n'''""").body[0].value.col_offset
-1
```

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[issue10631] ZipFile and current directory change

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Fixed in issue14099 for 3.5. Do you think that this solution should be 
backported Martin?

An alternative solution of this issue would be to convert relative path to 
absolute path in ZipFile constructor.

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[issue23306] Within zipfile, use of zlib.crc32 raises OverflowError at argument-parsing time on large strings

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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[issue11152] pb in zipfile module

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Looks as this bug was fixed in issue1710703.

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

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[issue23381] Python 2.7.9+ test_gdb regression on Ubuntu 10.04

[Vinson Lee]

Changes by Vinson Lee :


--
keywords: +patch
Added file: 
http://bugs.python.org/file38022/0001-Issue-23881-Only-use-entry-values-with-gdb-7.4.patch

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[issue23285] PEP 475 - EINTR handling

[Charles-François Natali]

Charles-François Natali added the comment:

> Antoine Pitrou added the comment:
>
>> Would it be possible to push the latest patch right now
>
> It's ok for me. Please watch the buildbots :)

Cool, I'll push on Friday evening or Saturday.

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[issue18932] Optimize selectors.EpollSelector.modify()

[STINNER Victor]

STINNER Victor added the comment:

2015-02-05 18:46 GMT+01:00 Giampaolo Rodola' :
> +def modify(self, fileobj, events, data=None):
> +...
> +if events != key.events:

You should update the SelectorKey in the case, no?

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[issue17189] Add zip64 support to shutil

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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status: open -> closed

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[issue17189] Add zip64 support to shutil

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
dependencies:  -Use allowZip64=True by default
resolution:  -> out of date
superseder:  -> Use allowZip64=True by default

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[issue14099] ZipFile.open() should not reopen the underlying file

[eryksun]

eryksun added the comment:

The changeset from 03 Dec is in the Windows 2.7.9 release.

Python 2.7.9 (default, Dec 10 2014, 12:28:03) [MSC v.1500 64 bit
(AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more
information.
>>> import zipfile
>>> zipfile._SharedFile


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[issue21717] Exclusive mode for ZipFile and TarFile

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Ping.

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[issue17911] traceback: add a new thin class storing a traceback without storing local variables

[Nick Coghlan]

Nick Coghlan added the comment:

I think in this case, the fact that it's easier to decompose an exception
into the corresponding triple rather than vice-versa, together with the
fact that other exception state manipulation APIs like exc_info() and
__exit__() methods work with triples, means it makes sense to accept the
triple as the base constuctor API, and then have the convenience method to
destructure a caught exception.

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[issue17911] traceback: add a new thin class storing a traceback without storing local variables

[Antoine Pitrou]

Antoine Pitrou added the comment:

The solution of having two constructor classmethods actually seems nice
and symmetric to me.

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[issue23399] venv should create relative symlinks where possible

[Barry A. Warsaw]

New submission from Barry A. Warsaw:

There is a subtle behavior difference between virtualenv and pyvenv.  When you 
create a venv with virtualenv, the symbolic links files /bin are 
relative, while they are absolute with pyvenv.  This means that virtual 
environments created with virtualenv can be relocated (modulo the #! lines of 
the script, but let's not worry about that for now), but virtual environments 
created with pyvenv cannot be relocated.

With pyvenv, you also have /lib64 pointing to an absolute path.

AFAICT, there's no good reason why the symlink targets must be absolute paths.  
Relative paths work just fine for virtualenv and they should work fine for 
pyvenv.

This patch changes the lib64 and /bin/* symlinks to be relative.  There 
should be no change when symlinks are disabled or are unavailable.

One remaining question is whether /bin/python itself should be relative.  
In virtualenv, even with something like `-p /usr/bin/python3.4` you still get a 
relative link.  /bin/python points outside of the venv, so the question 
is whether the $PATH-dependent behavior of virtualenv is worthwhile or not.  My 
patch does not change this symlink.

--
assignee: vinay.sajip
components: Library (Lib)
files: venv.patch
keywords: patch
messages: 235457
nosy: barry, dstufft, vinay.sajip
priority: normal
severity: normal
stage: patch review
status: open
title: venv should create relative symlinks where possible
type: behavior
versions: Python 3.4, Python 3.5
Added file: http://bugs.python.org/file38023/venv.patch

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[issue22524] PEP 471 implementation: os.scandir() directory scanning function

[Ben Hoyt]

Ben Hoyt added the comment:

Victor, I'd love to push forward with this (I doubt it's going to make alpha 1 
on February 8, but hopefully alpha 2 on March 8).

It seems pretty settled that we need to use the all-C version I've created, 
especially for Linux.

Can you please review scandir-2.patch? It's on Rietveld here: 
http://bugs.python.org/review/22524/#ps13104

You can see what changed between scandir-1.patch and scandir-2.patch more 
easily here: 
https://github.com/benhoyt/scandir/commit/d4e2d7083319ed8988aef6ed02d670fb36a00a33

Also, here is just the scandir C code in its own file: 
https://github.com/benhoyt/scandir/blob/d4e2d7083319ed8988aef6ed02d670fb36a00a33/posixmodule_scandir_main.c

One other open question is: should it go into CPython's posixmodule.c as I have 
it in the patch, or should I try to separate it out?

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[issue18932] Optimize selectors.EpollSelector.modify()

[Giampaolo Rodola']

Giampaolo Rodola' added the comment:

Yes, it appears so. I would suggest to come up with a patch which overrides 
modify() for all those selectors which can benefit from it (poll, epoll, 
kqueue) and refactor register() / unregister() (for select) in a separate issue 
/ patch. Also, I suppose a couple of tests should be added (if not there 
already) in order to make sure that 'events' and 'data' arguments get actually 
changed in different situations.

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[issue18932] Optimize selectors.EpollSelector.modify()

[Giampaolo Rodola']

Changes by Giampaolo Rodola' :


--
stage:  -> needs patch
type:  -> performance

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[issue23212] Update Windows and OS X installer copies of OpenSSL to 1.0.1l

[Roundup Robot]

Roundup Robot added the comment:

New changeset 7b74c65758ca by Ned Deily in branch '2.7':
Issue #23212: Update OS X installer build OpenSSL to 1.0.1l.
https://hg.python.org/cpython/rev/7b74c65758ca

New changeset 1ddf68f118c7 by Ned Deily in branch '3.4':
Issue #23212: Update OS X installer build OpenSSL to 1.0.1l.
https://hg.python.org/cpython/rev/1ddf68f118c7

New changeset aeba7274d68a by Ned Deily in branch 'default':
Issue #23212: merge from 3.4
https://hg.python.org/cpython/rev/aeba7274d68a

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[issue23212] Update Windows and OS X installer copies of OpenSSL to 1.0.1l

[Ned Deily]

Changes by Ned Deily :


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

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[issue22735] Fix various crashes exposed through mro() customization

[Roundup Robot]

Roundup Robot added the comment:

New changeset 6384c0cd3b2d by Benjamin Peterson in branch '3.4':
fix many custom mro() edge cases and improve code quality (#22735)
https://hg.python.org/cpython/rev/6384c0cd3b2d

New changeset 75fd0bd89eef by Benjamin Peterson in branch 'default':
merge 3.4 (#22735)
https://hg.python.org/cpython/rev/75fd0bd89eef

--
nosy: +python-dev

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[issue2786] Names in traceback should have class names, if they're methods

[Daniil Bondarev]

Daniil Bondarev added the comment:

As long as you think It fits into your issue, I'm ok with adding this patch to 
it (: it's different files, so no conflicts. Should I just add this patch to 
your ticket?

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[issue23260] Update Windows installer

[Roundup Robot]

Roundup Robot added the comment:

New changeset e7dbef447157 by Steve Dower in branch 'default':
Issue #23260: Update Windows installer
https://hg.python.org/cpython/rev/e7dbef447157

--
nosy: +python-dev

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[issue23260] Update Windows installer

[Steve Dower]

Steve Dower added the comment:

Got about as many reviews as I expected, but the builds have been going fine 
and I want this checked in before alpha, so in it goes :)

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

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[issue23392] Add tests for marshal FILE* API

[Roundup Robot]

Roundup Robot added the comment:

New changeset e55f955659bc by Serhiy Storchaka in branch '2.7':
Issue #23392: Added tests for marshal C API that works with FILE*.
https://hg.python.org/cpython/rev/e55f955659bc

New changeset 05153851d1d6 by Serhiy Storchaka in branch '3.4':
Issue #23392: Added tests for marshal C API that works with FILE*.
https://hg.python.org/cpython/rev/05153851d1d6

New changeset 7f22813496de by Serhiy Storchaka in branch 'default':
Issue #23392: Added tests for marshal C API that works with FILE*.
https://hg.python.org/cpython/rev/7f22813496de

--
nosy: +python-dev

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[Roundup Robot]

Roundup Robot added the comment:

New changeset 30e6c8caa5b9 by Serhiy Storchaka in branch '3.4':
Issue #23881: Only use entry-values with gdb 7.4 in tests.
https://hg.python.org/cpython/rev/30e6c8caa5b9

New changeset 981e108039f1 by Serhiy Storchaka in branch 'default':
Issue #23881: Only use entry-values with gdb 7.4 in tests.
https://hg.python.org/cpython/rev/981e108039f1

New changeset cee39701b280 by Serhiy Storchaka in branch '2.7':
Issue #23881: Only use entry-values with gdb 7.4 in tests.
https://hg.python.org/cpython/rev/cee39701b280

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Actually this is #23381, not #23881.

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[issue23381] Python 2.7.9+ test_gdb regression on Ubuntu 10.04

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I provided similar patch in issue22765, but your patch looks more clear. 
Committed in 30e6c8caa5b9, 981e108039f1, and cee39701b280. Thanks for your 
patch Vinson.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed
versions: +Python 3.4, Python 3.5

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[issue22765] Fixes for test_gdb (first frame address, entry values)

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue20416] Marshal: performance regression with versions 3 and 4

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

What are your thoughts Victor?

--
title: Marshal: special case int and float, don't use references -> Marshal: 
performance regression with versions 3 and 4

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[issue23392] Add tests for marshal FILE* API

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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

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[issue19884] Importing readline produces erroneous output

[Vinson Lee]

Changes by Vinson Lee :


--
nosy: +vlee

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