[Python-checkins] r55237 - peps/trunk/pep-0000.txt peps/trunk/pep-3128.txt
guido.van.rossum
python-checkins at python.org
Fri May 11 01:41:54 CEST 2007
Author: guido.van.rossum
Date: Fri May 11 01:41:53 2007
New Revision: 55237
Modified:
peps/trunk/pep-0000.txt
peps/trunk/pep-3128.txt
Log:
Reject PEP 3128 (BList).
Modified: peps/trunk/pep-0000.txt
==============================================================================
--- peps/trunk/pep-0000.txt (original)
+++ peps/trunk/pep-0000.txt Fri May 11 01:41:53 2007
@@ -121,7 +121,6 @@
S 3118 Revising the buffer protocol Oliphant, Banks
S 3119 Introducing Abstract Base Classes GvR, Talin
S 3124 Overloading, Generic Functions, Interfaces Eby
- S 3128 BList: A Faster List-like Type Stutzbach
S 3131 Supporting Non-ASCII Identifiers von Löwis
S 3132 Extended Iterable Unpacking Brandl
S 3141 A Type Hierarchy for Numbers Yasskin
@@ -268,6 +267,7 @@
SR 3122 Delineation of the main module Cannon
SR 3125 Remove Backslash Continuation Jewett
SR 3126 Remove Implicit String Concatenation Jewett
+ SR 3128 BList: A Faster List-like Type Stutzbach
SR 3130 Access to Current Module/Class/Function Jewett
@@ -497,7 +497,7 @@
SR 3125 Remove Backslash Continuation Jewett
SR 3126 Remove Implicit String Concatenation Jewett
SA 3127 Integer Literal Support and Syntax Maupin
- S 3128 BList: A Faster List-like Type Stutzbach
+ SR 3128 BList: A Faster List-like Type Stutzbach
SA 3129 Class Decorators Winter
SR 3130 Access to Current Module/Class/Function Jewett
S 3131 Supporting Non-ASCII Identifiers von Löwis
Modified: peps/trunk/pep-3128.txt
==============================================================================
--- peps/trunk/pep-3128.txt (original)
+++ peps/trunk/pep-3128.txt Fri May 11 01:41:53 2007
@@ -4,7 +4,7 @@
Last-Modified: $Date$
Author: Daniel Stutzbach <daniel at stutzbachenterprises.com>
Discussions-To: Python 3000 List <python-3000 at python.org>
-Status: Draft
+Status: Rejected
Type: Standards Track
Content-Type: text/x-rst
Created: 30-Apr-2007
@@ -12,6 +12,33 @@
Post-History: 30-Apr-2007
+Rejection Notice
+================
+
+Rejectd based on Raymond Hettinger's sage advice [4]_:
+
+ After looking at the source, I think this has almost zero chance
+ for replacing list(). There is too much value in a simple C API,
+ low space overhead for small lists, good performance is common use
+ cases, and having performance that is easily understood. The
+ BList implementation lacks these virtues and trades-off a little
+ performance is common cases for much better performance in
+ uncommon cases. As a Py3.0 PEP, I think it can be rejected.
+
+ Depending on its success as a third-party module, it still has a
+ chance for inclusion in the collections module. The essential
+ criteria for that is whether it is a superior choice for some
+ real-world use cases. I've scanned my own code and found no instances
+ where BList would have been preferable to a regular list. However,
+ that scan has a selection bias because it doesn't reflect what I would
+ have written had BList been available. So, after a few months, I
+ intend to poll comp.lang.python for BList success stories. If they
+ exist, then I have no problem with inclusion in the collections
+ module. After all, its learning curve is near zero -- the only cost
+ is the clutter factor stemming from indecision about the most
+ appropriate data structure for a given task.
+
+
Abstract
========
@@ -339,6 +366,9 @@
.. [3] Discussion on python-3000 starting at post:
http://mail.python.org/pipermail/python-3000/2007-April/006757.html
+.. [4] Raymond Hettinger's feedback on python-3000:
+ http://mail.python.org/pipermail/python-3000/2007-May/007491.html
+
Copyright
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