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...problems will be encountered, given that they include larger pieces of relatively untested code. The easiest way to simplify those investigations and reduce the likelihood of users encountering problems is to reduce the size of the batches being shipped. PEP 602 proposes to address this problem via the straightforward approach of reducing CPython's typical batch size by 50%, shipping 12 months of changes each time, rather than accumulating 18+ months of changes. PEP 605 proposes to address it by...
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...problems are much harder to solve, and somebody with those problems will need to write a PEP addressing them. future_statement is aimed at a different audience." The current situation When an incompatible change to core language syntax or semantics is being made, Python currently provides the future_statement mechanism for providing forward compatibility until the release that enforces the new syntax or semantics, but provides no corresponding standard mechanism for providing backward compatib...
...problem w/ mixed-case opts [ #433228 ] repr(list) woes when len(list) big [ #433904 ] rexec: all s_* methods return None only [ #434186 ] 0x80000000/2 != 0x80000000>>1 [ #434975 ] Typo on Posix Large File Support page [ #435066 ] PyObject_ClearWeakRefs misdocumented [ #436525 ] Wrong macro name [ #437041 ] strfime %Z isn't an RFC 822 timezone [ #437879 ] SocketServer.py related problems [ #438032 ] Documentation errors in module "profile" [ #439012 ] Need doc: initial state of al...
...Problem Proposed Solutions Scope Credits References Copyright Rejection Notice This PEP is rejected for failure to generate significant interest. Abstract This PEP proposes strategies to allow the Python standard library to be upgraded in parts without having to reinstall the complete distribution or having to wait for a new patch level release. Problem Python currently does not allow overriding modules or packages in the standard library per default. Even though this is possible by defin...
...problem: if the expressions for both arguments happen to have an integral type, it implements floor division rather than true division. The problem is unique to dynamically typed languages: in a statically typed language like C, the inputs, typically function arguments, would be declared as double or float, and when a call passes an integer argument, it is converted to double or float at the time of the call. Python doesn't have argument type declarations, so integer arguments can easily find t...
...problems in developing air traffic control solutions is that each customer's unique airport, regulatory picture, and methodologies impose specific and different requirements for user interface look and behavior. A significant part of the deployment of an air traffic control system is the customization of its interface. Instead of developing each user interface from the ground up on a per-customer basis, Frequentis has developed a user interface layout tool called PanView, similar to products lik...
...problem worse -- it would mean any class (or instance) can be raised! This is a problem as it prevents any guarantees from being made about the interface of exceptions. This PEP proposes introducing a new superclass that all raised objects must inherit from. Imposing the restriction will allow a standard interface for exceptions to exist that can be relied upon. It also leads to a known hierarchy for all exceptions to adhere to. One might counter that requiring a specific base class for a part...
...problems for most users using Python 2.2 or later. It does have a number of important enhancements, but these are not a compatiblity issue. Probably the biggest issues for its acceptance are: A incompatible C API. We can provide tools to make it easier to adapt C code but we can't make it automatic. A lack of libraries. We are starting on documenting the API, providing examples of how to add C code, and adding some standard libraries now. There will have to be enough ...
...Problems Warning This page stays here for historical reasons and it may contain outdated or incorrect information. Debugging Reference Count Problems From: Guido van Rossum <guido@CNRI.Reston.VA.US> To: python-list@cwi.nl Date: Wed, 27 May 1998 11:09:40 -0400 Mike Fletcher wrote a number of posts about debugging C code that bombs, probably because of reference count problems. His approach to debugging this problem seems typical, but I think it's not very productiv...
...problems that are actually observed. Here's my proposal. At the end of this message I list some potential problems with the proposal and ask for feedback. This will probably be implemented in Python 1.5.1. Contents: Algorithms Motivation Problems and Questions Revised version Based on some comments I received and some more thinking, I've changed this a bit since my web posting on this subject. Significant Changes are indicated in the text by [italicized remarks in sq...
...problems like needing officers for committees, and some notice requirements or requirements for holding next board or members meetings that were too short in time. Change sponsor members so they are voting members only optionally, if they designate a voting representative. Allow levels of sponsors (to be set by the board), and don't allow sponsors to become emeritus. This is designed to reflect what most sponsors do/want, and to be more realistic about what happens to companies across buy-outs,...
...problem occurs only when a global variable and a local variable share the same name and a nested function uses that name to refer to the global variable. This is poor programming practice, because readers will easily confuse the two different variables. One example of this problem was found in the Python standard library during the implementation of nested scopes. To address this problem, which is unlikely to occur often, the Python 2.1 compiler (when nested scopes are not enabled) issues a wa...
Python 2.3.6 Release Python 2.3.6 We are pleased to announce the release of Python 2.3.6 (FINAL), a bugfix release of Python 2.3, on November 1, 2006. Important: 2.3.6 includes a security fix (PSF-2006-001) for the repr() of unicode strings in wide unicode builds (UCS-4) Python 2.3 is now well and truly in bugfix-only mode; no new features are being added, and only security critical bugs have been fixed. There are 3 bugs fixed in this release - a problem with the email package's handling of...
Version: None
Released: Nov. 1, 2006
Python 2.3 is now well and truly in bugfix-only mode; no new features are being added, and only security critical bugs have been fixed. There are 3 bugs fixed in this release - a problem with the …
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PEP 244 -- The directive statement PEP:244 Title:The directive statement Author:martin at v.loewis.de (Martin von Löwis) Status:Rejected Type:Standards Track Created:20-Mar-2001 Python-Version:2.1 Post-History: Contents Motivation Syntax Semantics Specific Directives: transitional Backwards Compatibility Unresolved Problems: directive as the first identifier Questions and Answers Copyright Motivation From time to time, Python makes an incompatible change to the advertised ...
Released: April 4, 2023
This is an early developer preview of Python 3.12. Major new features of the 3.12 series, compared to 3.11 Python 3.12 is still in development. This release, 3.12.0a7 is the seventh and final alpha release of 3.12. Alpha releases are intended to make it easier to test the current …
...problem here is that the storage is both accessed as if it where struct PyObject, and as struct FooObject. Historically, compilers did not have any problems with this code. However, modern compilers use that clause as an optimization opportunity, finding that f->ob_refcnt and o->ob_refcnt cannot possibly refer to the same memory, and that therefore the function should return 0, without having to fetch the value of ob_refcnt at all in the return statement. For GCC, Python now uses -fno-stri...
Released: Oct. 3, 2003
patch release release which supersedes earlier releases of 2.3.</i> </blockquote> <blockquote> <b>Important:</b> This release is vulnerable to the problem described in <a href="/news/security/PSF-2006-001/">security advisory PSF-2006-001</a> "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in <a href="../2.4.4/">Python 2.4.4</a> and <a href="../2.5/">Python 2.5</a>. If …
...problems in several cases: In Python implementations that do not use reference counting (e.g. PyPy, Jython), calls to __del__ may be arbitrarily delayed -- yet many situations require prompt cleanup of resources. Delayed cleanup produces problems like crashes due to file descriptor exhaustion, or WSGI timing middleware that collects bogus times. Async generators (PEP 525) can only perform cleanup under the supervision of the appropriate coroutine runner. __del__ doesn't have access to the corou...