[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Roundup Robot 

Roundup Robot added the comment:

New changeset b3fb7828b6fc by Antoine Pitrou in branch '3.3':
Issue #20791: copy.copy() now doesn't make a copy when the input is a bytes 
object.  Initial patch by Peter Otten.
http://hg.python.org/cpython/rev/b3fb7828b6fc

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread R. David Murray 

R. David Murray added the comment:

3.3 will get fixes until its final release, which will be some time after the 
release of 3.4.0.

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Antoine Pitrou 

Antoine Pitrou added the comment:

Is Python 3.3 still allowing bug fixes?
If yes, this is a good idea. Do you want to backport it?

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread STINNER Victor 

STINNER Victor added the comment:

Why not fixing this bug in Python 3.3 too?

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Antoine Pitrou 

Antoine Pitrou added the comment:

Ok, thank you! This will be in 3.4.1 and 3.5.

--
resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Roundup Robot 

Roundup Robot added the comment:

New changeset c2523bca50d7 by Antoine Pitrou in branch 'default':
Issue #20791: copy.copy() now doesn't make a copy when the input is a bytes 
object.  Initial patch by Peter Otten.
http://hg.python.org/cpython/rev/c2523bca50d7

--
nosy: +python-dev

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Peter Otten 

Peter Otten added the comment:

I did sign today (and received the confirmation email).

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Antoine Pitrou 

Antoine Pitrou added the comment:

Thanks for the patch, Peter. Could you sign a contributor's agreement? You can 
do so online at http://www.python.org/psf/contrib/contrib-form/

--
nosy: +pitrou
stage:  -> patch review
versions:  -Python 3.3

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread R. David Murray 

R. David Murray added the comment:

We probably just forgot to add it when the bytes type was added, and there was 
of course no test that would fail since it was a new type.

--
nosy: +r.david.murray
versions: +Python 3.4, Python 3.5

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Yury Selivanov 

Changes by Yury Selivanov :


--
nosy: +yselivanov

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread STINNER Victor 

STINNER Victor added the comment:

bytes is immutable, I don't why we would duplicate it.

--
nosy: +haypo

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Peter Otten 

Peter Otten added the comment:

Assuming that the current behaviour is by accident here's a patch that adds the 
bytes type to the _copy_dispatch registry.

--
keywords: +patch
nosy: +peter.otten
Added file: http://bugs.python.org/file34244/copy_bytes.patch

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue20791] copy.copy(bytes) is slow

2014-02-27 Thread Frank Millman 

New submission from Frank Millman:

Using copy.copy on a byte string returns a new copy instead of the original 
immutable object. Using copy.deepcopy returns the original, as expected. 
Testing with timeit, copy.copy is much slower than copy.deepcopy.

>>> import copy
>>>
>>> a = 'a'*1000  # string
>>> copy.copy(a) is a
True
>>> copy.deepcopy(a) is a
True
>>>
>>> b = b'b'*1000  # bytes
>>> copy.copy(b) is b
False
>>> copy.deepcopy(b) is b
True

--
components: Library (Lib)
messages: 212340
nosy: frankmillman
priority: normal
severity: normal
status: open
title: copy.copy(bytes) is slow
type: performance
versions: Python 3.3

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com