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Andrew McNabb added the comment:
The --no-user-cfg option works for me in Python 2.7, but it does not seem to be
in Python 3.2 or 3.3:
error: option --no-user-cfg not recognized
Am I doing something wrong, or was this feature only added to Python 2.7?
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Andrew McNabb added the comment:
> Maybe I'm confused, but the presence of "/net/prodigy" is *not*
> the issue here, and what gets mounted is *not* "/net/prodigy",
> but "/net/prodigy/tmp" (do "mount" to confirm or dispute).
No, /net
Andrew McNabb added the comment:
> Which one-line fix do you propose?
Doing a stat("/net/prodigy/tmp") before mkdir("/net/prodigy/tmp") is an
extremely simple workaround.
Of course, I would love to see clear documentation of how the kernel is defined
to behave in t
Andrew McNabb added the comment:
I posted a bug report with the kernel here:
https://bugzilla.kernel.org/show_bug.cgi?id=43262
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Andrew McNabb added the comment:
I see no evidence that this is a bug in Linux, and I think it's ridiculous to
close it when a trivial one-line fix is available. I won't reopen it because
it's obvious no one wants to address this. :(
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Andrew McNabb added the comment:
By the way, if my hunch about the difference in stat of '/net/prodigy' vs.
'/net/prodigy/tmp' is correct, then this would explain why makedirs on deeper
directories work. Specifically, one of the shallower stat calls would force the
moun
Andrew McNabb added the comment:
Hmm. Maybe there's a difference between doing stat('/net/prodigy') vs.
stat('/net/prodigy/tmp'). Just a guess, but maybe the former can succeed before
the mount completes, but the latter has to wait
Andrew McNabb added the comment:
This isn't fixed. All of the examples I've given were with a 3.3.0 kernel.
Doing a stat would be a fix.
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Changes by Andrew McNabb :
Added file: http://bugs.python.org/file25612/makedirs.out
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Changes by Andrew McNabb :
Added file: http://bugs.python.org/file25611/mkdir-p.out
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Andrew McNabb added the comment:
Some interesting information. If I do `os.mkdir('/net/prodigy/tmp')`, it gives
"OSError: [Errno 13] Permission denied: '/net/prodigy/tmp'". However, if I
instead do `os.mkdir('/net/prodigy/tmp/hi')`, it succeeds. (Note
Andrew McNabb added the comment:
> Andrew, are you still with us?
I'm here, but it's been a busy few weeks. I'll see if I can spend some time on
this today.
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New submission from Andrew McNabb :
When a os.makedirs is used under an autofs directory, it crashes. For example,
on my machine, `os.makedirs('/net/prodigy/tmp')` crashes with the following
traceback:
Traceback (most recent call last):
...
File "/usr/lib64/python2.7/os.py
Andrew McNabb added the comment:
It looks like encodings/zlib_codec.py defines a custom IncrementalEncoder and
IncrementalDecoder, but its StreamWriter and StreamReader rely on the standard
implementation of codecs.StreamWriter and codecs.StreamReader.
One solution might be to have
New submission from Andrew McNabb :
The stream encoder for the zlib_codec doesn't use the incremental encoder, so
it has limited usefulness in practice. This is easiest to show with an example.
Here is the behavior with the stream encoder:
>>> filelike = io.BytesIO
Andrew McNabb added the comment:
Thanks for your advice. I just signed up for the python-porting list, and I'll
start a discussion there.
I'm trying to improve the wiki page to address your concerns. There are
multiple valid approaches to take, and I'm trying to make the
Andrew McNabb added the comment:
By the way, I just noticed your notes on the wiki page and added a
response/question. It seems that the advice that you consider bad is the
official porting story (upgrade to 2.6 and use 2to3). I agree that it's easier
and better to not drop support fo
Andrew McNabb added the comment:
What advice in particular do you consider bad? I would be happy to submit some
changes to the wiki page for anything that's wrong.
I think it would be great to have a reviewed version in the documentation
directly, but I think the world needs a little
New submission from Andrew McNabb :
The What's New documentation for Python 3.0 and 3.1 have sections called
"Porting to Python 3.0". It would be great to add a link to the Python wiki
page about porting Python to Python 3:
http://wiki.python.org/moin/PortingPythonToPy3k
Andrew McNabb added the comment:
Sorry for the noise. It turns out that my problem was unrelated.
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Andrew McNabb added the comment:
I'm seeing something very similar to this. In my case, I have a
single-threaded program, and select fails to be interrupted by SIGCHLD. I'm
still tracking down more details, so I'll report back if I find more
information.
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Andrew McNabb added the comment:
I would imagine that this would come up in most programs that read data from a
pipe or from a socket (which are binary data) and then output to stdout or
stderr. I ran across the problem in my first non-trivial port to Python 3, and
it seems like a common
Andrew McNabb added the comment:
This seems like a common need (particularly for stdout and stderr), and setting
`stdout._CHUNK_SIZE = 1` is relying on an implementation detail.
1) Can the documentation for TextIOWrapper be updated to clearly describe this
extra buffering (how often
New submission from Andrew McNabb :
The following snippet behaves differently in the C IO implementation than in
the Python IO implementation:
import sys
sys.stdout.write('unicode ')
sys.stdout.buffer.write(b'bytes ')
To test this, I have created two scripts, test
Andrew McNabb added the comment:
Oops. I had run "pydoc" instead of "pydoc3", so I was getting the 2.6 version
of the io docstrings instead of the 3.1 version.
By the way, it took about an hour to find out how to get Python 3 to treat
stdin as bytes instead of unicode.
New submission from Andrew McNabb :
I was trying to open stdin in binary mode and ran the following:
>>> RawIOBase(sys.stdin.fileno()).read()
Traceback (most recent call last):
File "", line 1, in
AttributeError: 'RawIOBase' object has no attribute 'readi
Andrew McNabb added the comment:
I think that optparse is doing the right thing here. I think that your code
example should be changed to:
import optparse
parser = optparse.OptionParser()
parser.add_option("-o", "--option", action = "append")
options, a
Andrew McNabb added the comment:
I've noticed this, too, and I agree with Toshio's observations. Tarek,
do you have any opinions?
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Changes by Andrew McNabb :
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type: crash -> behavior
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New submission from Andrew McNabb :
Tools/scripts/pathfix.py crashes with a TypeError:
Traceback (most recent call last):
File "Tools/scripts/pathfix.py", line 149, in
main()
File "Tools/scripts/pathfix.py", line 54, in main
if recursedown(arg): bad = 1
Andrew McNabb added the comment:
On Thu, Jul 30, 2009 at 07:14:56PM +, Thomas Heller wrote:
>
> Thanks for bringing my attention to this problem again, and for the review.
I'm just glad to help.
> The problem is that the patch changes the behaviour of the
> 'P
Andrew McNabb added the comment:
I ran into this problem, too. It took me a long time to track down the
segfaults. It's really bad to pass in None and have the system pick
some random address instead of 0.
I looked at the attached patch, and it seems to me the only alternative
approach
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