Results

• PEP 670 -- Convert macros to functions in the Python C API

  ...functions makes Python 1.04x slower when the compiler does not inline static inline functions. Post History python-dev mailing list threads: Version 2 of PEP 670 - Convert macros to functions in the Python C API (February 2022) Steering Council reply to PEP 670 -- Convert macros to functions in the Python C API (February 2022) PEP 670: Convert macros to functions in the Python C API (October 2021) References bpo-45490: [C API] PEP 670: Convert macros to functions in the Python C API (Oct...

• PEP 620 -- Hide implementation details from the C API

  ...Python version and must be recompiled at each Python version. STATUS: Completed (in Python 3.8) The reorganization of header files started in Python 3.7 and was completed in Python 3.8: bpo-35134: Add a new Include/cpython/ subdirectory for the "CPython API" with implementation details. bpo-35081: Move internal headers to Include/internal/ Move private functions to the internal C API Private functions which expose implementation details must be moved to the internal C API. If a C extension r...

• PEP 575 -- Unifying function/method classes

  ...Python bug 30071, Duck-typing inspect.isfunction() (https://bugs.python.org/issue30071) [3]Python bug 33261, inspect.isgeneratorfunction fails on hand-created methods (https://bugs.python.org/issue33261 and https://github.com/python/cpython/pull/6448) [4]Python bug 33265, contextlib.ExitStack abuses __self__ (https://bugs.python.org/issue33265 and https://github.com/python/cpython/pull/6456) [5]PyMethodDef documentation (https://docs.python.org/3.7/c-api/structures.html#c.PyMethod...

• Event – An introduction to Web Scraping with Python and Azure Functions - PyLadies Amsterdam

  26 May from 4:30pm UTC to 6pm UTC, 2021

  Location: Online

  An introduction to Web Scraping with Python and Azure Functions

• PEP 384 -- Defining a Stable ABI

  ...python3 module definition file": http://svn.python.org/projects/python/branches/pep-0384/PC/python3.def [2]"PEP 384 branch": http://svn.python.org/projects/python/branches/pep-0384/ [3]"ABI type conversion script": http://svn.python.org/projects/python/branches/pep-0384/Tools/scripts/abitype.py Copyright This document has been placed in the public domain. Source: https://github.com/python/peps/blob/master/pep-0384.txt

• PEP 490 -- Chain exceptions at C level

  ...python.org> Status:Rejected Type:Standards Track Created:25-Mar-2015 Python-Version:3.6 Contents Abstract Rationale Proposal Modify PyErr_*() functions to chain exceptions Modify functions to not chain exceptions Modify functions to chain exceptions Backward compatibility Alternatives No change New helpers to chain exceptions Appendix PEPs Python C API Python Issues Rejection Copyright Abstract Chain exceptions at C level, as already done at Python level. Rationale Python...

• PEP 564 -- Add new time functions with nanosecond resolution

  ...Python-Version:3.7 Resolution:https://mail.python.org/pipermail/python-dev/2017-October/150046.html Contents Abstract Rationale Float type limited to 104 days Previous rejected PEP Issues caused by precision loss Example 1: measure time delta in long-running process Example 2: compare times with different resolution CPython enhancements of the last 5 years Existing Python APIs using nanoseconds as int Changes New functions Unchanged functions Alternatives and discussion Sub-nanoseco...

• PEP 3155 -- Qualified name for classes and functions

  ...functions PEP:3155 Title:Qualified name for classes and functions Author:Antoine Pitrou <solipsis at pitrou.net> Status:Final Type:Standards Track Created:29-Oct-2011 Python-Version:3.3 Post-History: Resolution:https://mail.python.org/pipermail/python-dev/2011-November/114545.html Contents Rationale Proposal Example with nested classes Example with nested functions Limitations Discussion Excluding the module name Reviving unbound methods Naming choice References Cop...

• PEP 450 -- Adding A Statistics Module To The Standard Library

  ...python.org/pipermail/python-ideas/2011-September/011524.html [22]https://pypi.python.org/pypi/stats/ [23]https://mail.python.org/pipermail/python-ideas/2013-August/022630.html [24]https://mail.python.org/pipermail/python-dev/2013-September/128429.html Copyright This document has been placed in the public domain. Source: https://github.com/python/peps/blob/master/pep-0450.txt

• SIG for development of Python/C++ integration

  ...Python for wrapped C++ functions. Generic C++ to Python Object Interface It is often necessary for C++ functions to manipulate objects passed to them directly from Python, without converting them to some other representation. Currently Boost.Python has undocumented support for that usage when the expected Python type is known. Goal: Addition of a C++ type which wraps any Python object and provides a similar interface to Python's, with the validity of any operat...

• PEP 7 -- Style Guide for C Code

  ...python.org>, Barry Warsaw <barry at python.org> Status:Active Type:Process Created:05-Jul-2001 Post-History: Contents Introduction C dialect Code lay-out Naming conventions Documentation Strings Copyright Introduction This document gives coding conventions for the C code comprising the C implementation of Python. Please see the companion informational PEP describing style guidelines for Python code. Note, rules are there to be broken. Two good reasons to break a particula...

• PEP 298 -- The Locked Buffer Interface

  ...functions may be set to NULL, but it is strongly recommended to implement the releaselockedbufferproc function (even if it does nothing) if any of the acquireread/writelockedbufferproc functions are implemented, to discourage extension writers from checking for a NULL value and not calling it. These functions aren't supposed to be called directly, they are called through convenience functions declared in Include/abstract.h: int PyObject_AcquireLockedReadBuffer(PyObject *obj, ...

• PEP 457 -- Notation For Positional-Only Parameters

  ...python.org/3/library/stdtypes.html#dict [2](1, 2) http://docs.python.org/3/library/functions.html#func-range [3]http://docs.python.org/3/library/curses.html#curses.window.border [4]http://docs.python.org/3/library/os.html#os.sendfile [5]http://docs.python.org/3/library/curses.html#curses.window.addch [6]Guido van Rossum, posting to python-ideas, March 2012: https://mail.python.org/pipermail/python-ideas/2012-March/014364.html and https://mail.python.org/pipermail/python-...

• PEP 436 -- The Argument Clinic DSL

  ...functions in the implementation of CPython. Rationale and Goals The primary implementation of Python, "CPython", is written in a mixture of Python and C. One implementation detail of CPython is what are called "built-in" functions -- functions available to Python programs but written in C. When a Python program calls a built-in function and passes in arguments, those arguments must be translated from Python values into C values. This process is called "parsing arguments". As of CPython 3.3,...

• PEP 576 -- Rationalize Built-in function classes

  ...Python functions and be efficient as Python or built-in functions. Changes to existing C structs The function, method_descriptor and method classes will have their corresponding structs changed to start with the PyExtendedCallable struct. Third-party built-in classes using the new extended call interface To enable call performance on a par with Python functions and built-in functions, third-party callables should set the Py_TPFLAGS_EXTENDED_CALL bit of tp_flags and ensure that the correspon...

• PEP 445 -- Add new APIs to customize Python memory allocators

  ...Python memory allocators PEP:445 Title:Add new APIs to customize Python memory allocators Author:Victor Stinner <vstinner at python.org> BDFL-Delegate:Antoine Pitrou <solipsis at pitrou.net> Status:Final Type:Standards Track Created:15-Jun-2013 Python-Version:3.4 Resolution:https://mail.python.org/pipermail/python-dev/2013-July/127222.html Contents Abstract Rationale Proposal New Functions and Structures Redesign Debug Checks on Memory Block Allocators as Hooks Do...

• PEP 579 -- Refactoring C functions and methods

  ...Python cfunction object (the self in __call__ or tp_call). This would for example allow implementing the C call protocol for Python functions (types.FunctionType): the C function which implements calling Python functions needs access to the __code__ attribute of the function. This is also needed for PEP 573 where all cfunctions require access to their "parent" (the module for functions of a module or the defining class for methods). Solution: add a new PyMethodDef flag to specify that the C func...

• Proposed Improvements to Module Cleanup

  ...Python function or class. A function object contains a reference to the function's 'globals' object, which is the __dict__ of the module that defines it. Since the __dict__ normally has a reference to the function there's a cycle that needs to be broken, or else the __dict__ would never be garbage collected. Note that a reference-count based solution doesn't work within one module, since references between functions are by name, not by value -- two mutually recursive functions can st...

• PEP 580 -- The C call protocol

  ...python.org/pipermail/python-dev/2018-June/153938.html https://mail.python.org/pipermail/python-dev/2018-June/153984.html https://mail.python.org/pipermail/python-dev/2018-July/154238.html https://mail.python.org/pipermail/python-dev/2018-July/154470.html https://mail.python.org/pipermail/python-dev/2018-July/154571.html https://mail.python.org/pipermail/python-dev/2018-September/155166.html https://mail.python.org/pipermail/python-dev/2018-October/155403.html https://mail.python.org/pipermail/py...

• PEP 667 -- Consistent views of namespaces

  ...Python C-API Extensions to the API Changes to existing APIs Behavior of f_locals for optimized functions Backwards Compatibility Python C-API PyEval_GetLocals PyFrame_FastToLocals, etc. Implementation C API Comparison with PEP 558 Open Issues References Copyright Abstract In early versions of Python all namespaces, whether in functions, classes or modules, were all implemented the same way: as a dictionary. For performance reasons, the implementation of function namespaces was chang...