New submission from Albert :
Hello!
Is it intentional, that the default argument is ALWAYS evaluated, even if it is
not needed???
Is it not a bug, that this method has no short-circuit eval
(http://en.wikipedia.org/wiki/Short-circuit_evaluation)
??
Example1:
=
infinite = 1e100
New submission from Chase Albert :
My expectation was that range(2,5) == range(2,5), and that they should hash the
same. This is not the case.
--
messages: 147838
nosy: rob.anyone
priority: normal
severity: normal
status: open
title: Ranges cannot be meaningfully compared for equality
New submission from Albert Zeyer :
The attached Python script leaks memory. It is clear that there is a reference
circle (`__dict__` references `self`) but `gc.collect()` should find this.
--
components: Interpreter Core
files: py_dict_refcount_test.py
messages: 138062
nosy
Albert Zeyer added the comment:
Whoops, looks like a duplicate of #1469629.
--
resolution: -> duplicate
status: open -> closed
___
Python tracker
<http://bugs.python.org/i
New submission from Albert Zeyer :
Code:
```
import ast
globalsDict = {}
fAst = ast.FunctionDef(
name="foo",
args=ast.arguments(
args=[], vararg=None, kwarg=None, defaults=[],
kwonlyargs=[], kw_defaults=[]),
body=[], deco
Albert Zeyer added the comment:
PyPy bug report: https://bugs.pypy.org/issue806
--
___
Python tracker
<http://bugs.python.org/issue12608>
___
___
Python-bug
New submission from Albert Zeyer :
Code:
```
from ast import *
globalsDict = {}
exprAst = Interactive(body=[FunctionDef(name=u'Py_Main',
args=arguments(args=[Name(id=u'argc', ctx=Param()), Name(id=u'argv',
ctx=Param())], vararg=None, kwarg=None, defaults=[]),
New submission from Albert Zeyer :
Code:
```
from ast import *
globalsDict = {}
body = [
Assign(targets=[Name(id=u'argc', ctx=Store())],
value=Name(id=u'None', ctx=Load())),
]
exprAst = Interactive(body=[
FunctionDef(
Albert Zeyer added the comment:
Simplified code:
```
from ast import *
globalsDict = {}
exprAst = Interactive(body=[
FunctionDef(
name=u'foo',
args=arguments(args=[], vararg=None, kwarg=None, defaults=[]),
New submission from Albert Zeyer :
In Parser/tokenizer.c, there is `PyOS_Readline(stdin, stdout, tok->prompt)`.
This ignores any `sys.stdin` / `sys.stdout` overwrites.
The usage should be like in Python/bltinmodule.c in builtin_raw_input.
--
messages: 143168
nosy: Albert.Ze
New submission from Albert Zeyer :
Modules/readline.c 's `call_readline` doesn't release the GIL while reading.
--
messages: 143226
nosy: Albert.Zeyer
priority: normal
severity: normal
status: open
title: readline implementation doesn't release the GIL
versi
Albert Zeyer added the comment:
Whoops, sorry, invalid. It doesn't need to. It is handled in PyOS_Readline.
--
resolution: -> invalid
status: open -> closed
___
Python tracker
<http://bugs.python.
New submission from Albert Zeyer :
In Parser/myreadline.c PyOS_Readline uses a single lock (`_PyOS_ReadlineLock`).
I guess it is so that we don't have messed up stdin reads. Or are there other
technical reasons?
However, it should work to call this function from multiple threads
Albert Zeyer added the comment:
Ok, it seems that the Modules/readline.c implementation is also not really
threadsafe... (Whereby, I think it should be.)
--
___
Python tracker
<http://bugs.python.org/issue12
New submission from Albert Zeyer :
PyOS_StdioReadline from Parser/myreadline.c is printing the prompt on stderr.
I think it should print it on the given parameter sys_stdout. Other readline
implementations (like from the readline module) also behave this way.
Even if it really is supposed to
Albert Zeyer added the comment:
Even more problematic: The readline lib itself is absolutely not designed in a
way to be used from multi threads at once.
--
___
Python tracker
<http://bugs.python.org/issue12
Albert Zeyer added the comment:
You might have opened several via `openpty`.
I am doing that here: https://github.com/albertz/PyTerminal
--
___
Python tracker
<http://bugs.python.org/issue12
New submission from Albert Weichselbraun :
urllib2 fails to retrieve the content of
http://www.mfsa.com.mt/insguide/english/glossarysearch.jsp?letter=all
>>> urllib2.urlopen("http://www.mfsa.com.mt/insguide/english/glossarysearch.jsp?letter=all";).read()
''
Changes by Albert Strasheim :
--
nosy: +Albert.Strasheim
___
Python tracker
<http://bugs.python.org/issue8296>
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Albert Strasheim added the comment:
Any chance of getting this patch applied? Thanks.
--
___
Python tracker
<http://bugs.python.org/issue8296>
___
___
Python-bug
Changes by Albert Strasheim :
--
nosy: +Albert.Strasheim
___
Python tracker
<http://bugs.python.org/issue9205>
___
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Changes by Albert Strasheim :
--
nosy: +Albert.Strasheim
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Albert Hopkins added the comment:
This issue appears to persist when the protocol used is FTP:
root@tp-db $ cat test.py
from urllib.request import urlopen
for line in urlopen('ftp://gentoo.osuosl.org/pub/gentoo/releases/'):
print(line)
break
root@tp-db $ python3
Albert Hopkins added the comment:
Oops, previous example was a directory, but it's the same if the url points to
a ftp file.
--
___
Python tracker
<http://bugs.python.org/i
New submission from albert hofkamp <[EMAIL PROTECTED]>:
shutil.copytree() uses shutil.copyfile() to copy files recursively.
shutil.copyfile() opens the source file for reading, and the destination
file for writing, followed by a call to shutil.copyfileobj().
If the file happens to be a
Changes by Albert Hopkins :
--
nosy: +marduk
___
Python tracker
<http://bugs.python.org/issue5380>
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New submission from albert hofkamp:
In the Python reference manual (the online current documentation), in
Section 3.3 "New-style and classic classes", there is a reference to
external documentation about new style classes.
The reference is however incorrect, it should be
http://www.
New submission from albert hofkamp:
In the Python reference manual (the online current documentation), in
the "About this document" section, there is a reference to the
Sourceforge bug tracker for reporting errors in the document.
This tracker however has been closed, and has been r
New submission from Istvan Albert <[EMAIL PROTECTED]>:
The write performance into text files is substantially slower (5x-8x)
than that of python 2.5. This makes python 3.0 unsuited to any
application that needs to write larger amounts of data.
test code f
Istvan Albert <[EMAIL PROTECTED]> added the comment:
Well I would strongly dispute that anyone other than the developers
expected this. The release documentation states:
"The net result of the 3.0 generalizations is that Python 3.0 runs the
pystone benchmark around 10% slower than
New submission from Albert Hopkins <[EMAIL PROTECTED]>:
Say I have module foo.py:
def a(x):
def b():
x
del x
If I run foo.py under Python 2.4.4 I get:
File "foo.py", line 4
del x
SyntaxError
Albert Hopkins <[EMAIL PROTECTED]> added the comment:
Thanks for looking into this.
Ok... I applied your patch (actually it does not apply against Python
3.0 so I had to change it manually).
Now I'm not sure if this is still an error in the compiler or if it's
truly a proble
Albert Zeyer added the comment:
> How is CoW copy supposed to be done by using copy_file_range() exactly?
I think copy_file_range() will just always use copy-on-write and/or
server-side-copy when available. You cannot even turn that
Albert Zeyer added the comment:
Instead of `except:` and `except BaseException:`, I think better use `except
Exception:`.
For further discussion and reference, also see the discussion here:
https://news.ycombinator.com/item?id=22028581
--
nosy: +Albert.Zeyer
Albert Zeyer added the comment:
Why is `except BaseException` better than `except Exception` here? With `except
Exception`, you will never run into the problem of possibly closing the fd
twice. This is the main important thing which we want to fix here. This is more
important than missing
Albert Zeyer added the comment:
If you anyway accept that KeyboardInterrupt can potentially leak, by just using
`except Exception`, it would also be solved here.
--
___
Python tracker
<https://bugs.python.org/issue39
Albert Zeyer added the comment:
> I think it is worth pointing out that the semantics of
>
> f = ``open(fd, closefd=True)``
>
> are broken (IMHO) because an exception can result in an unreferenced file
> object that has taken over reponsibility for closing the fd, but
Albert Zeyer added the comment:
According to the man page of copy_file_range
(https://man7.org/linux/man-pages/man2/copy_file_range.2.html), copy_file_range
also should support copy-on-write:
> copy_file_range() gives filesystems an opportunity to implement
> "copy a
Albert Zeyer added the comment:
Is FICLONE really needed? Doesn't copy_file_range already supports the same?
I posted the same question here:
https://stackoverflow.com/questions/65492932/ficlone-vs-ficlonerange-vs-copy-file-range-for-copy-on-write-support
--
nosy: +Albert.
Albert Zeyer added the comment:
I did some further research (with all details here:
https://stackoverflow.com/a/65518879/133374).
See vfs_copy_file_range in the Linux kernel. This first tries to call
remap_file_range if possible.
FICLONE calls ioctl_file_clone. ioctl_file_clone calls
Albert Christianto added the comment:
Hi admins,
I need help for compiling and building Python-3.7.7.
My system is Ubuntu 16.04 LTS, gcc 5.4.0 20160609
this is the configuration cmd for compling python
./configure --enable-optimizations --enable-shared
when i compiled it, i get these
Albert Christianto added the comment:
Sorry for my late response.
Well, thank you very much for your fast response to help me.
Actually, I have solved the problem in 3 hours after I posted my question.
hehehe.
I found this tip about uncleaned files after executing "make clean&quo
New submission from Albert Francis :
How to solve unrecoverable server exiting in IDLE
--
assignee: terry.reedy
components: IDLE
messages: 374766
nosy: albertpython, terry.reedy
priority: normal
severity: normal
status: open
title: Unrecoverable server exiting
type: behavior
versions
Albert Francis added the comment:
Dear Sir,
I got the solution. Thanks
On Tue, 4 Aug 2020, 16:55 Terry J. Reedy, wrote:
>
> Terry J. Reedy added the comment:
>
> One should never see this message. As far as I remember, I have seen it
> only once in the last several years.
Albert Francis added the comment:
Got it, thanks!
On Mon, 10 Aug 2020, 19:26 Terry J. Reedy, wrote:
>
> Terry J. Reedy added the comment:
>
> Test error fixed on issue 41514.
>
> --
>
> ___
> Python tracker
> <h
New submission from Albert Cervin :
When creating a virtualenv using venv.EnvBuilder, it always uses
sys._base_executable. However, in some embedded cases (Blender being one
example), it is not set to a valid Python executable. The proposal is to add a
keyword parameter to the EnvBuilder
Change by Albert Cervin :
--
keywords: +patch
pull_requests: +20981
stage: -> patch review
pull_request: https://github.com/python/cpython/pull/21854
___
Python tracker
<https://bugs.python.org/issu
New submission from Albert Zeyer:
The doc says that StringIO.truncate should not change the current position.
Consider this code:
try:
import StringIO
except ImportError:
import io as StringIO
buf = StringIO.StringIO()
assert_equal(buf.getvalue(), "")
prin
New submission from Albert Zeyer :
subprocess_fork_exec currently calls fork().
I propose to use vfork() or posix_spawn() or syscall(SYS_clone, SIGCHLD, 0)
instead if possible and if there is no preexec_fn. The difference would be that
fork() will call any atfork handlers (registered via
Albert Zeyer added the comment:
This is a related issue, although with different argumentation:
https://bugs.python.org/issue20104
--
___
Python tracker
<https://bugs.python.org/issue31
Albert Zeyer added the comment:
Here is some more background for a case where this occurs:
https://stackoverflow.com/questions/46849566/multi-threaded-openblas-and-spawning-subprocesses
My proposal here would fix this.
--
___
Python tracker
<ht
Albert Zeyer added the comment:
I'm also affected by this, with Python 3.6. My home directory is on a
ZFS-backed NFS share.
See here for details:
https://github.com/Linuxbrew/homebrew-core/issues/4799
Basically:
Copying setuptools.egg-info to
/u/zeyer/.linuxbrew/lib/python3.6/site-pac
Albert Zeyer added the comment:
Note that this indeed seems confusing. I just found this thread by search for a
null context manager. Because I found that in TensorFlow they introduced
_NullContextmanager in their code and I wondered that this is not provided by
the Python stdlib
New submission from Michel Albert :
Consider the following code:
# filename: foo.py
from functools import lru_cache
@lru_cache(10)
def bar():
yield 10
yield 20
yield 30
# This loop will work as expected
for row in bar():
print(row
New submission from Albert Zeyer :
```
class Foo1(dict):
def __getattr__(self, key): return self[key]
def __setattr__(self, key, value): self[key] = value
class Foo2(dict):
__getattr__ = dict.__getitem__
__setattr__ = dict.__setitem__
o1 = Foo1()
o1.x = 42
print(o1, o1.x)
o2
New submission from Albert Zeyer:
Code:
```
class Wrapper:
@staticmethod
def __getattr__(item):
return repr(item) # dummy
a = Wrapper()
print(a.foo)
```
Expected output: 'foo'
Actual output with Python 2.7:
Traceback (most recent call las
Albert Zeyer added the comment:
I don't quite understand. Shouldn't __getattr__ also work in old-style classes?
And the error itself ('staticmethod' object is not callable), shouldn't that be
impossible?
--
Albert Looney added the comment:
removing emacs from the devguide
Im am certainly new at this, so if this is incorrect please provide feedback.
--
keywords: +patch
nosy: +alooney
Added file: http://bugs.python.org/file34503/index.patch
___
Python
Albert Looney added the comment:
Patch should be fixed now and remove emacs.rst file.
It seems to me that the Emacs information that is being deleted is already in
the wiki.
https://wiki.python.org/moin/EmacsEditor
--
Added file: http://bugs.python.org/file34542/devguide.patch
Michel Albert added the comment:
It seems the contributor agreement form has been processed. As I understand it,
the asterisk on my name confirms this.
I also verified that this patch cleanly applies to the most recent revision.
--
___
Python
Michel Albert added the comment:
Hi again,
The contribution agreement has been processed, and the patch still cleanly
applies to the latest revision of branch `default`.
--
___
Python tracker
<http://bugs.python.org/issue20
Michel Albert added the comment:
Sorry for the late reply. I wanted to take some time and give a more detailed
explanation. At least to the best of my abilities :)
I attached a zip-file with my quick-and-dirty test-rig. The zip contains:
* gendata.py -- The script I used to generate test
Michel Albert added the comment:
I made the changes mentioned by r.david.murray
I am not sure if the modifications in ``Doc/whatsnew/3.5.rst`` are correct. I
tried to follow the notes at the top of the file, but it's not clear to me if
it should have gone into ``News/Misc`` or into
Changes by Albert Looney :
Removed file: http://bugs.python.org/file34503/index.patch
___
Python tracker
<http://bugs.python.org/issue20062>
___
___
Python-bugs-list m
New submission from Albert Ferras:
I normally use dictionaries for configuration purposes in python, but there's a
problem where I have a dictionary with many key<->values and one of the keys is
repeated.
For example:
lives_in = { 'lion': ['Africa', 'Ameri
Albert Ferras added the comment:
I would use json, but it allows me to set list/strings, etc.. not python
objects like I'd want
--
___
Python tracker
<http://bugs.python.org/is
Albert Ferras added the comment:
sorry: *it only allows me
--
___
Python tracker
<http://bugs.python.org/issue16385>
___
___
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Albert Ferras added the comment:
also, it creates confusion when this happens
--
___
Python tracker
<http://bugs.python.org/issue16385>
___
___
Python-bugs-list m
Albert Zeyer added the comment:
I don't know that I have an expression and I want it also to work if it is not
an expression. Basically I really want the 'single' behavior. (My
not-so-uncommon use case: Have an interactive shell where the output on stdout
does not make sens
Albert Zeyer added the comment:
Thanks a lot for the long and detailed response! I didn't meant to start a
header war; I thought that my request was misunderstood and thus the header
changes were by mistake. But I guess it is a good suggestion to leave that
decision to a core dev.
I
Albert Hopkins added the comment:
You can close this one out. I don't even remember the use case anymore.
--
___
Python tracker
<http://bugs.python.org/i
New submission from Albert Ho:
https://docs.python.org/3/tutorial/classes.html
>>> for char in reverse('golf'):
I found that reverse didnt work
and i check the doc
https://docs.python.org/3.4/library/functions.html#reversed
>>> reversed(seq)ΒΆ
I guess it just fo
New submission from Albert Zeyer:
On MacOSX, when you build an ARC-enabled Dylib with backward compatibility for
e.g. MacOSX 10.6, some unresolved functions like
`_objc_retainAutoreleaseReturnValue` might end up in your Dylib.
Some reference about the issue:
1. http://stackoverflow.com/q
New submission from Michel Albert:
While I was looking at the source of the ipaddress unit-tests, I noticed a
couple of PEP8 violations. This patch fixes these (verified using the ``pep8``
tool).
There are no behavioural changes. Only white-space.
Test-cases ran successfully before, and
Michel Albert added the comment:
Thanks for the quick reply!
I did not know the pep8 tool added it's own rules :( I have read PEP8 a long
while ago and have since relied on the tool to do "the right thing". Many of
it's idiosyncrasies have probably made their way into my
Michel Albert added the comment:
Here's a new patch which addresses white-space issues without touching the old
tests.
--
Added file: http://bugs.python.org/file34265/test_ipaddress_pep8-r3.patch
___
Python tracker
<http://bugs.py
New submission from Michel Albert:
The ipaddress module always returns ``False`` when testing if a network is
contained in another network. However, I feel this should be a valid test. No?
Is there any reason why this is fixed to ``False``?
In case not, here's a patch which implements
Michel Albert added the comment:
Hmm... after thinking about this, I kind of agree. I was about to state
something about the fact that you could consider networks like an "ordered
set". And use that to justify my addition :) But the more I think about it, the
more I am okay with
New submission from Michel Albert:
This alternative implementation runs over the ``addresses`` collection only
once, and "backtracks" only if necessary. Inspired by a "shift-reduce" approach.
Technically both are O(n), so the best case is always the same. But the old
impl
Michel Albert added the comment:
I strongly agree with Raymond's points! They are all valid.
I should note, that I submitted this patch to - as mentioned by Nick -
familiarise myself with the patch submission process. I decided to make
harmless changes which won't risk brakin
Michel Albert added the comment:
I second "supernet_of" and "subnet_of". I'll implement it as soon as I get
around it.
I have been thinking about using ``in`` and ``<=`` and, while I initially liked
the idea for tests, I find both operators too ambiguous.
Wit
Michel Albert added the comment:
Here's a new patch implementing both ``subnet_of`` and ``supernet_of``.
It also contains the relevant docs and unit-tests.
--
Added file: http://bugs.python.org/file34292/net-in-net-r2.patch
___
Python tracker
Michel Albert added the comment:
Yes. I signed it last Friday if I recall correctly.
As I understood it, the way for you to tell if it's done, is that my username
will be followed by an asterisk.
But I'm not in a hurry. Once I get the confirmation, I can just ping you again
via
Michel Albert added the comment:
Did so already last weekend. I suppose it will take some time to be processed.
I can ping you via a message here once I receive the confirmation.
--
___
Python tracker
<http://bugs.python.org/issue20
New submission from albert Mietus :
The functions urlparse.url{,un}split() and urllib{,2}.open() do not work
together for relative, local files, due a bug in urlunsplit.
Given a file f='./rel/path/to/file.html' it can be open directly by
urllib.open(f), but not in urllib2! as the l
albert Mietus added the comment:
There was a bug in the workaround:
if not ( scheme == 'file' and not netloc and url[0] != '/'):
-=---
The {{{and url[0] != '/'}}} was missing (above is corrected)
New submission from albert hofkamp :
Current implementation (r71564) uses "'%s\n%s' % (old_val, new_line)" to
merge multi-line options into one string.
For options with many lines, this wastes a lot of CPU power.
Attached patch against r71564 fixes this problem by first buil
Michel Albert added the comment:
I just realised that the latest patch on this no longer applies properly. I
have fixed the issue and I am currently in the process of running the
unit-tests which takes a while. Once those pass, I'll update some metadata and
res
Michel Albert added the comment:
Test pass properly.
Is there anything else left to do?
Here's the fixed patch (net-in-net-r4.patch)
--
Added file: http://bugs.python.org/file43534/net-in-net-r4.patch
___
Python tracker
<http://bugs.py
Michel Albert added the comment:
Updated patch, taking into account notes from the previous patch-reviews
--
Added file: http://bugs.python.org/file43535/net-in-net-r5.patch
___
Python tracker
<http://bugs.python.org/issue20
Michel Albert added the comment:
I don't quite see how the operator module could help. I don't have much
experience with it though, so I might be missing something...
I don't see how I can relate one check to the other. The example I gave in the
patch review was the follo
Michel Albert added the comment:
New patch with proposed changes.
--
Added file: http://bugs.python.org/file43537/net-in-net-r6.patch
___
Python tracker
<http://bugs.python.org/issue20
New submission from Albert Zeyer:
If you have some Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS in some tp_dealloc
and you use such objects in thread local storage, you might get crashes,
depending on which thread at what time is trying to cleanup such object.
I haven't fully figured ou
Albert Zeyer added the comment:
The latest 2.7 hg still crashes.
--
___
Python tracker
<http://bugs.python.org/issue17263>
___
___
Python-bugs-list mailin
Albert Zeyer added the comment:
The backtrace:
Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x7fff8a54e386 __semwait_signal + 10
1 libsystem_c.dylib 0x7fff85e30800 nanosleep + 163
2 libsystem_c.dylib
Albert Zeyer added the comment:
Note that in my original application where I encountered this (with sqlite),
the backtrace looks slightly different. It is at shutdown, but not at
interpreter shutdown - the main thread is still running.
https://github.com/albertz/music-player/issues/23
I was
Albert Zeyer added the comment:
Here is one. Others are in the issue report on GitHub.
In Thread 5, the PyObject_SetAttr is where some attribute containing a
threading.local object is set to None. This threading.local object had a
reference to a sqlite connection object (in some TLS contextes
Albert Zeyer added the comment:
Sadly, that is quite complicated or almost impossible. It needs the MacOSX
system Python and that one lacks debugging information.
I just tried with the CPython vom hg-2.7. But it seems the official Python
doesn't have objc bindings (and I also need
New submission from Albert Zeyer:
`compile(s, "", "single")` would generate a code object which
prints the value of the evaluated string if that is an expression. This is what
you would normally want in a REPL.
Instead of printing the value, it might make more sense to ret
Albert Zeyer added the comment:
The symbols are there because it is a library which exports all the symbols.
Other debugging information are not there and I don't know any place where I
can get them.
It currently cannot work on Linux in the same way because the GUI is Cocoa only
righ
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