On May 12, 2013, at 8:26 PM, Eli Bendersky eli...@gmail.com wrote:
Thanks for the insights, Raymond. I don't think anyone is planning on rushing
anything. We still have to get the enum module itself committed and a serious
review process has just started for that, so it will take time.
Raymond Hettinger writes:
whether users will see any actual benefits (particularly for
internal constants).
I don't understand the parenthetical remark. It seems to me that
changing internal constants should have the benefits that Ethan points
to for understanding, debugging, and
Le Mon, 13 May 2013 00:06:52 -0700,
Raymond Hettinger raymond.hettin...@gmail.com a écrit :
On May 12, 2013, at 8:26 PM, Eli Bendersky eli...@gmail.com wrote:
Thanks for the insights, Raymond. I don't think anyone is planning
on rushing anything. We still have to get the enum module
Raymond Hettinger raymond.hettin...@gmail.com wrote:
I would like to ask for a little restraint and for there to
be individual cost/benefit evaluations for each case.
+1
For external constants, some thought needs to be given to:
* is the current API working just fine (i.e. decimal's
On Sun, May 12, 2013 at 2:01 PM, Antoine Pitrou solip...@pitrou.net wrote:
On Fri, 03 May 2013 12:43:41 +1000
Steven D'Aprano st...@pearwood.info wrote:
On 03/05/13 11:29, Nick Coghlan wrote:
An exchange in one of the enum threads prompted me to write down
something I've occasionally
Hello python-dev.
I'm working on a patch to remove reference cycles from heap-allocated classes:
http://bugs.python.org/issue17950
Part of the patch involves making sure that descriptors in the class dictionary
don't contain strong references to the class itself.
This is item 2) in the defect
Okay, I've renamed my BetterWalk module to scandir and updated it
as per our discussion:
https://github.com/benhoyt/scandir/#readme
It's not yet production-ready, and is basically still in API and
performance testing stage. For instance, the underlying scandir_helper
functions don't even return
Hi Ben,
Am 13.05.13 14:25, schrieb Ben Hoyt:
...It's not yet production-ready, and is basically still in API and
performance testing stage. ...
In any case, I really like the API (thanks mostly to Nick Coghlan),
and performance is great, even with DirEntry being written in Python.
On Mon, May 13, 2013 at 10:25 PM, Ben Hoyt benh...@gmail.com wrote:
Okay, I've renamed my BetterWalk module to scandir and updated it
as per our discussion:
https://github.com/benhoyt/scandir/#readme
Nice!
PERFORMANCE: On Windows I'm seeing that scandir.walk() on a large test
tree (see
On Mon, May 13, 2013 at 1:49 PM, Kristján Valur Jónsson
krist...@ccpgames.com wrote:
Hello python-dev.
I‘m working on a patch to remove reference cycles from heap-allocated
classes: http://bugs.python.org/issue17950
Part of the patch involves making sure that descriptors in the class
On 13 May 2013 10:20, Maciej Fijalkowski fij...@gmail.com wrote:
On Mon, May 13, 2013 at 1:49 PM, Kristján Valur Jónsson
krist...@ccpgames.com wrote:
Hello python-dev.
I‘m working on a patch to remove reference cycles from heap-allocated
classes: http://bugs.python.org/issue17950
Part of
Like it or not, people rely on this behavior. I don't think CPython
(or PyPy) can actually afford to change it. If so, documenting it
sounds like a better idea than leaving it undocumented only known to
the inner shrine
+1. I am relying on this.
On May 12, 2013, at 04:49 PM, Raymond Hettinger wrote:
After the long design effort for the enum module, I'm sure there will be a
forthcoming effort to apply them pervasively throughout the standard library.
We usually, explicitly, try not to do such wholesale adoptions in the stdlib
when new
Am 13.05.2013 02:21, schrieb Ben Hoyt:
Are you suggesting just accessing .cached_lstat could call os.lstat()?
That seems very bad to me. It's a property access -- it looks cheap,
therefore people will expect it to be. From PEP 8 Avoid using
properties for computationally expensive operations;
On 05/13/2013 12:06 AM, Raymond Hettinger wrote:
Ethan's email suggests that against my advice he is in-fact going to go through
the standard library, applying enums
quite broadly.
I think you are falling victim to Wizard's First Rule: people will believe what
they want to be true, or are
On 5/13/2013 9:20 AM, Maciej Fijalkowski wrote:
The strong reference there is a feature. Descriptors keep the class
alive if somehow the class disappears and the descriptor itself does
Is this feature stated or implied in the reference manual?
3.3.2.1. Implementing Descriptors
3.3.2.2.
On Mon, 13 May 2013 13:21:17 -0400
Terry Jan Reedy tjre...@udel.edu wrote:
On 5/13/2013 9:20 AM, Maciej Fijalkowski wrote:
The strong reference there is a feature. Descriptors keep the class
alive if somehow the class disappears and the descriptor itself does
Is this feature stated or
I'd to see the numbers for NFS or CIFS - stat() can be brutally slow
over a network connection (that's why we added a caching mechanism to
importlib).
How do I know what file system Windows networking is using? In any
case, here's some numbers on Windows -- it's looking pretty good! This
is
OK, you got me! I'm now convinced that a property is a bad idea.
Thanks. :-)
I still like to annotate that the function may return a cached value.
Perhaps lstat() could require an argument?
def lstat(self, cached):
if not cached or self._lstat is None:
self._lstat
On 05/10/2013 10:15 PM, Glenn Linderman wrote:
So it is quite possible to marry the two, as Ethan helped me figure out using
an earlier NamedInt class:
class NIE( IntET, Enum ):
x = ('NIE.x', 1)
y = ('NIE.y', 2)
z = ('NIE.z', 4)
and then expressions involving members of NIE
On 05/13/2013 07:36 PM, Ethan Furman wrote:
Here's your code, revamped. I did make a slight change in the meta -- I moved
the name assignment above the __init__
call so it's available in __init__.
--8
from ref435 import Enum
from flags
On 5/13/2013 7:36 PM, Ethan Furman wrote:
On 05/10/2013 10:15 PM, Glenn Linderman wrote:
So it is quite possible to marry the two, as Ethan helped me figure
out using an earlier NamedInt class:
class NIE( IntET, Enum ):
x = ('NIE.x', 1)
y = ('NIE.y', 2)
z = ('NIE.z', 4)
and
On 5/13/2013 7:36 PM, Ethan Furman wrote:
2) Is something like demo2 interesting to anyone but me? Of course, I
think it would be great for reporting flag values
using names rather than a number representing combined bit fields.
No idea. ;)
There's been some talk of Enum-ing constants in
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