Change by Anthony Sottile :
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pull_request: https://github.com/python/cpython/pull/13663
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Python tracker
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New submission from Anthony Sottile :
Additionally, virtualenvs have the root of their directory on `sys.path` --
this is unlike posix behaviour
For example:
$ python
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD6
4)] on win32
Type "help",
Anthony Sottile added the comment:
sys.prefix isn't on sys.path on other platforms -- why is it on windows?
--
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Anthony Sottile added the comment:
If I'm reading this correctly this is the relevant line for python3:
https://github.com/python/cpython/blob/29cb21ddb92413931e473eb799a02e2d8cdf4a45/PC/getpathp.c#L1068
it was added in 4d0d471a8031de90a2b1ce99c4ac4780e60b3bc9
python2 seems to do the
Change by Anthony Sottile :
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Python tracker
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Anthony Sottile added the comment:
at least for debian, the motivation is to provide a `pythonX.X-minimal` and a
`pythonX.X` package -- the former ~mostly just contains the interpreter and the
latter includes the stdlib
(I'm interested as well, hit this packaging 3.8 for deads
Change by Anthony Sottile :
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pull_requests: +13799
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/13579
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New submission from Anthony Sottile :
This is a regression from python2.x behaviour:
$ python2
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
Anthony Sottile added the comment:
Hi! just stumbled on this as I was updating pytest's import hook. I notice in
PEP 451 this is still marked as optional (then again, I don't know whether PEPs
are supposed to be living standards or not, or if there was a PEP which
supersedes tha
Anthony Sottile added the comment:
Where can I find up to date best practices / docs for the import machinery? I
couldn't find a mention of this in docs.python.org
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Anthony Sottile added the comment:
Mostly looking for something that says how `create_module` should / shouldn't
be implemented (and why `return None` is necessary)
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Anthony Sottile added the comment:
yeah I guess I'm just curious why this bug (seemingly intentionally) made the
implementation diverge from PEP 451 and require an empty `create_module` (and
where I would have found that except by searching bugs.python.org)
Everyone I've shown t
New submission from Anthony Sottile :
For instance this file:
foo = f"""{}
foo"""
$ python3.8 --version --version
Python 3.8.0b1 (default, Jun 6 2019, 03:44:52)
[GCC 7.4.0]
$ python3.8 t.py | wc -c
File "t.py", line 1
<>
Anthony Sottile added the comment:
I can also trigger this with:
```
1+ """\q
"""
```
And `python -Werror`
so it seems not necessarily related to fstrings
--
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Python tracker
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Anthony Sottile added the comment:
Debugging further, there's a token with a `multi_line_start` pointing at
uninitialized memory -- let's see if I can't track down where that gets set and
fix it :)
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Change by Anthony Sottile :
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pull_request: https://github.com/python/cpython/pull/14433
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Anthony Sottile added the comment:
I suspect it would be closed since it's essentially just a revert of this issue
:S
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Anthony Sottile added the comment:
just an f-string doesn't trigger this, there needs to be tokens before it
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Anthony Sottile added the comment:
This has regressed again -- I'll make another patch
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Change by Anthony Sottile :
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pull_request: https://github.com/python/cpython/pull/14576
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Anthony Sottile added the comment:
yes, as was the original PR
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New submission from Anthony Sottile :
In an effort to try and fix some of the ecosystem before python3.10 (or 4.0) is
a thing, I figured I'd set up a build where the version is bumped and see
what's broken.
If you're interested in reproducing my findings, I've inc
New submission from Anthony Sottile :
In an effort to try and fix some of the ecosystem before python3.10 (or 4.0) is
a thing, I figured I'd set up a build where the version is bumped and see
what's broken.
If you're interested in reproducing my findings, I've inc
Anthony Sottile added the comment:
disregard, this appears to be due to debian's patching
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New submission from Anthony Sottile :
For example:
curses.unget_wch(b'x')
TypeError: expect bytes or str of length 1, or int, got bytes
--
components: Extension Modules
messages: 348570
nosy: Anthony Sottile
priority: normal
severity: normal
status: open
title: Incor
Change by Anthony Sottile :
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pull_requests: +14754
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/14986
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Anthony Sottile added the comment:
sure! the only other case I could come up with involves multi-line strings and
invalid escape sequences + Werror
let me see if I can fold that in as well
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Change by Anthony Sottile :
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pull_request: https://github.com/python/cpython/pull/15003
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Python tracker
<https://bugs.python.org/issue37
Anthony Sottile added the comment:
seems unrelated and does the same on older versions of python:
```
$ python3.5 t.py
File "t.py", line 4
^
SyntaxError: EOF while scanning triple-quoted string literal
```
I'd suggest a new issue or f
New submission from Anthony Sottile :
Here's an example
from difflib import ndiff
def main():
x = '\tx\t=\ty\n\t \t \t^'
y = '\tx\t=\ty\n\t \t \t^\n'
print('\n'.join(
line.rstrip('\n') for line in
ndiff(x.splitlines(Tr
Change by Anthony Sottile :
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pull_requests: +14930
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/15201
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Anthony Sottile added the comment:
That's actually a good point, I don't think this should land in python3.7 since
it changes outuput -- I'm removing that from the versions (though the bug does
affect every version I have access to)
--
version
Anthony Sottile added the comment:
pypy seems to have this right (though I don't know enough about their internals
to know if cpython can benefit from their patch)
$ venvpypy/bin/pythonPython 2.7.10 (3260adbeba4a, Apr 19 2016, 17:42:20)
[PyPy 5.1.0 with GCC 4.8.4] on linux2
Type
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New submission from Anthony Sottile:
Given shlex.quote often is used closely with calls in `subprocess`, should it
also support quoting __fspath__ objects?
I'll write up a quick patch for this
--
components: Library (Lib)
messages: 300270
nosy: Anthony Sottile
priority: n
Anthony Sottile added the comment:
Ah oops, I'm incorrect here, the __fspath__ object I was dealing with supported
__str__ and that's how subprocess was converting it -- not via __fspath__.
--
stage: -> resolved
status: open -> closed
__
Anthony Sottile added the comment:
I've added a patch for this https://github.com/python/cpython/pull/3027
Would love to get a review so it could be included
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Anthony Sottile added the comment:
I've attempted to address some of the backward/forward compatibility issue with
subparsers becoming optional by default (vs required by default in python2)
with this pull request: https://github.com/python/cpython/pull/3027 (would love
to get a revi
Anthony Sottile added the comment:
My patch mainly addresses the regression pointed out by mike bayer (zzzeek)'s
comment.
--
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Changes by Anthony Sottile :
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pull_requests: +3669
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___
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Py
New submission from Anthony Sottile:
There's a bit of history I don't understand and couldn't find the appropriate
trail for.
The original error message from the 2.6 era:
$ python2.6 -c 0[0]
Traceback (most recent call last):
File "", line 1, in
TypeError: '
Changes by Anthony Sottile :
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Py
Anthony Sottile added the comment:
All I'm really looking for is consistency -- should the change to 2.7 be
reverted instead?
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Python tracker
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New submission from Anthony Sottile :
```
import multiprocessing
class E(Exception):
def __init__(self, a1, a2):
Exception.__init__(self, '{}{}'.format(a1, a2))
def f(_):
raise E(1, 2)
multiprocessing.Pool(1).map(f, (1,))
```
Running this causes a hang:
```
$ py
Anthony Sottile added the comment:
`concurrent.futures` is affected as well:
```
import concurrent.futures
class E(Exception):
def __init__(self, a1, a2):
Exception.__init__(self, '{}{}'.format(a1, a2))
def f(_):
raise E(1, 2)
with concurrent.futures.ProcessPool
New submission from Anthony Sottile :
related to https://bugs.python.org/issue35311
encountered here: https://gitlab.com/pycqa/flake8/issues/473
minimal reproduction:
class TestPickleableException(unittest.TestCase):
def test_ParseError(self):
err = ParseError('msg', 2
Change by Anthony Sottile :
--
title: lib2to3.pgen2.parser.ParseError is not roundtrip pickleable ->
lib2to3.pgen2.parse.ParseError is not roundtrip pickleable
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Change by Anthony Sottile :
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pull_requests: +9960
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___
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Anthony Sottile added the comment:
The current prompt works fine for me on zsh -- what's the bug here?
zsh $ virtualenv venv --prompt '(wat)'
Using real prefix
'/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7'
New python executable in /priva
Change by Anthony Sottile :
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Anthony Sottile added the comment:
I've opened a PR with the test included:
https://github.com/python/cpython/pull/11085
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Anthony Sottile added the comment:
to be honest, I don't recall exactly given it's been 2 and a half years since
the original report with no activity.
if I recall correctly, this was encountered while upgrading the `mock` backport
in yelp's monolithic repository.
I want to
Anthony Sottile added the comment:
This appears to be a bug with numpy, I've made a PR for them:
https://github.com/numpy/numpy/pull/12566
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New submission from Anthony Sottile :
Noticed this while packaging 3.6.8 for deadsnakes (ubuntu ppa)
This patch: https://github.com/python/cpython/pull/11251
Requires a version of sphinx where `sphinx.util.logging.getLogger` is
available. It appears that the first version which that was
Anthony Sottile added the comment:
oops, pressed the button too quickly, meant to mention that sphinx 1.6 was
released 2017-05
--
___
Python tracker
<https://bugs.python.org/issue35
Anthony Sottile added the comment:
If I add a patch which is essentially:
try: # sphinx>=1.6
from sphinx.util.logging import getLogger
except ImportError: # sphinx<1.6
from logging import getLogger
will that be fine?
and should I open that against 3.7 to be backported o
Anthony Sottile added the comment:
I assume that means I should only target 3.6 -- does the patch look like the
right approach? I can make a PR
--
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Change by Anthony Sottile :
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keywords: +patch, patch
pull_requests: +10704, 10705
stage: -> patch review
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Change by Anthony Sottile :
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pull_requests: +10704
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Change by Anthony Sottile :
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pull_requests: +10704, 10705, 10706
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New submission from Anthony Sottile :
This simple program causes a hang / leaked processes (easiest to run in an
interactive shell):
import multiprocessing
tuple(multiprocessing.Pool(4).imap(print, (1, 2, 3)))
$ python3.6
Python 3.6.7 (default, Oct 22 2018, 11:32:17)
[GCC 8.2.0] on linux
New submission from Anthony Sottile :
>>> with open('f.exe', 'w') as f:
... f.write('hi')
...
>>> with open('f') as f:
... print(f.read())
...
hi
`os.path.exists(...)` and others treat them as the same file as well. It seems
Anthony Sottile added the comment:
ah yes, I should include more version information
IEUser@IE11WIN7 ~
$ python --version
Python 2.7.14
IEUser@IE11WIN7 ~
$ python3 --version --version
Python 3.6.4 (default, Jan 7 2018, 17:45:56)
[GCC 6.4.0]
IEUser@IE11WIN7 ~
$ uname -a
CYGWIN_NT-6.1
Anthony Sottile added the comment:
hmmm probably nothing in that case -- didn't realize this also happened in the
cygwin shell.
insanity.
feel free to close! thanks!
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Anthony Sottile added the comment:
I also had to update the patch for sphinx.util.status_iterator which was also
introduced in sphinx 1.6
--
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Python tracker
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Anthony Sottile added the comment:
Looks like this was merged and can be marked as resolved -- should this be
backported to 3.7?
--
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Python tracker
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Anthony Sottile added the comment:
If you see the bottom of my issue, I've suggested (nearly) the same thing --
though I require python2.x compatibility so I'm using `contextlib.closing`
--
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Anthony Sottile added the comment:
I agree -- probably safer to not backport to 3.7 in case someone is relying on
this behaviour.
--
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Python tracker
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New submission from Anthony Sottile :
Noticing this in pyflakes
https://github.com/PyCQA/pyflakes/pull/408
--
messages: 333579
nosy: Anthony Sottile
priority: normal
severity: normal
status: open
title: isinstance(ast.Constant(value=True), ast.Num) should be False
versions: Python 3.8
Change by Anthony Sottile :
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keywords: +patch, patch
pull_requests: +11165, 11166
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Change by Anthony Sottile :
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pull_requests: +11165, 11166, 11167
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Change by Anthony Sottile :
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Anthony Sottile added the comment:
yes, please do
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Anthony Sottile added the comment:
Seems also related to https://bugs.python.org/issue24119
with python2 / python3.5 (hopefully) rapidly falling off in usage I would
assume the specialized treatment of `# type: ...` comments would become less
and less necessary
Though I guess there's
Anthony Sottile added the comment:
Can you provide a reproducer? I'm having difficulty reproducing with this
script:
import argparse
p = argparse.ArgumentParser()
p.add_argument('--foo', nargs=None)
args = p.parse_args()
$ python3.7 --version
Python 3.7.2
$ python3.7 t
Anthony Sottile added the comment:
> You’d be surprised how tenacious old versions are.
heh that's true, at my last job we finally got rid of python2.6 in 2016 :'(
anyway -- I don't mean to discourage this, definitely seems valuable to the
m
New submission from Anthony Sottile :
Unless I'm reading incorrectly:
https://github.com/python/cpython/blob/7a2368063f25746d4008a74aca0dc0b82f86ff7b/Modules/clinic/posixmodule.c.h#L30-L31
https://github.com/python/cpython/blob/7a2368063f25746d4008a74aca0dc0b82f86ff7b/Modules/c
Anthony Sottile added the comment:
looks true for os.chmod as well:
https://github.com/python/cpython/blob/7a2368063f25746d4008a74aca0dc0b82f86ff7b/Modules/clinic/posixmodule.c.h#L327-L328
--
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Change by Anthony Sottile :
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keywords: +patch, patch
pull_requests: +11422, 11423
stage: -> patch review
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New submission from Anthony Sottile :
This appears to be true in 3.6+ -- I'd like to add a test and documentation
ensuring that going forward.
Related: https://github.com/python/typeshed/issues/2749
--
assignee: docs@python
components: Documentation, Tests
messages: 334188
Change by Anthony Sottile :
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pull_requests: +11424
stage: -> patch review
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Change by Anthony Sottile :
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pull_requests: +11424, 11425, 11426
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Change by Anthony Sottile :
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Anthony Sottile added the comment:
yep! did my due diligence there, you can check my work on
https://github.com/python/cpython/pull/11643
all platforms have these functions since `posixmodule.c` is always compiled and
the functions in question are not guarded by preprocessor directives in
New submission from Anthony Sottile :
For instance:
# `a` is an empty directory, a PEP 420 namespace package
>>> import importlib.util
>>> importlib.util.find_spec('a')
ModuleSpec(name='a', loader=None, origin='namespace',
submodule_search
Anthony Sottile added the comment:
Hmmm, it appears this was changed in python3.7 to have `None` for the origin
instead of `'namespace'` -- however the `submodule_search_locations` is still
not indexable:
>>> importlib.util.find_spec('a')
Mod
Change by Anthony Sottile :
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pull_requests: +11529, 11530, 11531
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Change by Anthony Sottile :
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pull_requests: +11529
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Change by Anthony Sottile :
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pull_requests: +11529, 11530
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Anthony Sottile added the comment:
I believe this also closes https://bugs.python.org/issue31940 and
https://bugs.python.org/issue28627
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New submission from Anthony Sottile :
doctest `:skipif:` was added in https://github.com/sphinx-doc/sphinx/issues/5273
Used here:
https://github.com/python/cpython/blame/36433221f06d649dbd7e13f5fec948be8ffb90af/Doc/library/turtle.rst#L252-L253
Sphinx minimum version configured here:
https
Change by Anthony Sottile :
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pull_requests: +11917
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___
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New submission from Anthony Sottile:
Originally seen here: https://github.com/Microsoft/vscode/issues/26227
```
$ LC_ALL=en_US python -c 'import io; io.open("/dev/null")'
Traceback (most recent call last):
File "", line 1, in
LookupError: unknown encoding:
Change by Anthony Sottile :
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status: open -> closed
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___
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Pyth
New submission from Anthony Sottile :
Here's the simplest example I could come up with -- hit this while debugging
pytest (which uses attrs which uses similar code to this to make classes)
import pdb; pdb.Pdb(skip=['django.*']).set_trace()
eval(compile("1", &
Change by Anthony Sottile :
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pull_requests: +12088
stage: -> patch review
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