Kevin Chen added the comment:
Awesome thanks! Does the rewrite fix the issue with creating negated flags as
well?
--
___
Python tracker
<https://bugs.python.org/issue42
New submission from Kevin Chen :
Here's a code sample:
```
import time
from enum import Flag, auto
class MyFlag(Flag):
NONE = 0
FLAG_1 = auto()
FLAG_2 = auto()
FLAG_3 = auto()
FLAG_4 = auto()
FLAG_5 = auto()
FLAG_6 = auto()
#
# NOT_FLAG_1_OR_2 = ~FLAG_1
New submission from Kevin Chen :
Ignore this, opened issue by accident
--
stage: -> resolved
status: open -> closed
___
Python tracker
<https://bugs.python.org/i
Change by Kevin Chen :
--
nosy: aspin2
priority: normal
severity: normal
status: open
title: enum.Flag ~ bitwise negation is very slow
versions: Python 3.8
___
Python tracker
<https://bugs.python.org/issue42
Kevin Chen added the comment:
Sorry for the noise. I upgraded my gevent (1.3.5 to 1.4.0) and greenlet
(0.4.13 to 0.4.15) libraries, and that appears to have resolved the issue. I
assume there was an incompatibility in one or both of the older versions of
these libraries with python 3.7
New submission from Kevin Chen :
Unfortunately, I don't currently have a simple test case, but after migrating
an app from python 3.6 to python 3.7, python frequently (but not always)
segfaults when running tests for my app in code related to StopIteration
(perhaps somehow related
Change by Kevin Chen <kc...@mit.edu>:
--
nosy: +kchen
___
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue20891>
___
___
Python
New submission from Kevin Chen:
File objects generated with socket.makefile and that attempt to use line
buffering appear to not actually use line buffering, at least for writing. In
this example, the string does not appear to be written until the flush call.
First, set up a socket:
$ nc -l
New submission from Kevin Chen:
When a Python HTTPS server requests client certificates, it should send a CA
list so the client knows which certificates are acceptable.
It looks like right now Python calls SSL_CTX_load_verify_locations, so once the
client certificate is sent, Python can
Changes by Kevin Chen mr.kevin.chen...@gmail.com:
--
nosy: +kevin.chen
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue15880
___
___
Python-bugs
Kevin Chen added the comment:
Okay just tried it. This is under Windows 7 x64.
I created a .py file with read-only permission. When I import the .py module,
the created .pyc doesn't have read-only permission.
So it works as intended under Windows OS. As long as under posix system
Kevin Chen added the comment:
Hi Nick,
Thank you so much for rolling out this change. I think your implementation of
the fix is more elegant. I have learned a few things from you.
I would love to keep helping to test/fix bugs for Python on Windows. Please
contact me if there is anything you
Kevin Chen added the comment:
Hi Eric,
I am happy to install Python 3.3 on Windows and help you test this. Can you
please give me some ideas on what I need to do?
Do I sync to the latest Python 3.3 branch and compile? Then run some unit-test
code? Which test files should I run? What should
Kevin Chen added the comment:
Hi I made the following patch for this issue.
It addresses the #2051 security bug. So the .pyc and .pyo files are created
using the same permission as .py
The MS_WINDOWS version will chmod the permission of .pyc and .pyo files to
write accessible before deleting
Kevin Chen added the comment:
I propose a fix:
static FILE *
open_exclusive(char *filename, mode_t mode)
{
#if defined(O_EXCL)defined(O_CREAT)defined(O_WRONLY)defined(O_TRUNC)
/* Use O_EXCL to avoid a race condition when another process tries to
write the same file. When
Kevin Chen added the comment:
This is essentially the way things were done in version 2.5.4 of Python. The
unlink() always succeeded, because the created .pyc file permission is always
set to 0666 in the fd=open() function. This means the .pyc will never be
created as read-only, and as long
Changes by Kevin Chen mr.kevin.chen...@gmail.com:
--
nosy: +ncoghlan
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue6074
___
___
Python-bugs-list
Changes by Kevin Chen kc...@mit.edu:
--
nosy: +kchen
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue7978
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