Python Enhancement Proposals

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PEP 0

PEP 0 – Index of Python Enhancement Proposals (PEPs)

Author:: The PEP Editors
Status:

Introduction

This PEP contains the index of all Python Enhancement Proposals,known as PEPs. PEP numbers areassignedby the PEP editors, and once assigned are never changed. Theversion control history ofthe PEP texts represent their historical record.

Topics

PEPs for specialist subjects areindexed by topic.

API

ThePEPS API is a JSON file of metadata about all the published PEPs.Read more here.

Numerical Index

Thenumerical index contains a table of all PEPs, ordered by number.

Index by Category

Process and Meta-PEPs

	PEP	Title	Authors
PA	1	PEP Purpose and Guidelines	Barry Warsaw, Jeremy Hylton, David Goodger, Alyssa Coghlan
PA	2	Procedure for Adding New Modules	Brett Cannon, Martijn Faassen
PA	4	Deprecation of Standard Modules	Brett Cannon, Martin von Löwis
PA	7	Style Guide for C Code	Guido van Rossum, Barry Warsaw
PA	8	Style Guide for Python Code	Guido van Rossum, Barry Warsaw, Alyssa Coghlan
PA	10	Voting Guidelines	Barry Warsaw
PA	11	CPython platform support	Martin von Löwis, Brett Cannon
PA	12	Sample reStructuredText PEP Template	David Goodger, Barry Warsaw, Brett Cannon
PA	13	Python Language Governance	The Python core team and community
PA	387	Backwards Compatibility Policy	Benjamin Peterson
PA	545	Python Documentation Translations	Julien Palard, Inada Naoki, Victor Stinner
PA	602	Annual Release Cycle for Python	Łukasz Langa	3.9
PA	609	Python Packaging Authority (PyPA) Governance	Dustin Ingram, Pradyun Gedam, Sumana Harihareswara
PA	676	PEP Infrastructure Process	Adam Turner
PA	729	Typing governance process	Jelle Zijlstra, Shantanu Jain
PA	731	C API Working Group Charter	Guido van Rossum, Petr Viktorin, Victor Stinner, Steve Dower, Irit Katriel
PA	732	The Python Documentation Editorial Board	Joanna Jablonski
PA	761	Deprecating PGP signatures for CPython artifacts	Seth Michael Larson	3.14

Other Informational PEPs

	PEP	Title	Authors
IA	20	The Zen of Python	Tim Peters
IA	101	Doing Python Releases 101	Barry Warsaw, Guido van Rossum
IF	247	API for Cryptographic Hash Functions	A.M. Kuchling
IF	248	Python Database API Specification v1.0	Greg Stein, Marc-André Lemburg
IF	249	Python Database API Specification v2.0	Marc-André Lemburg
IA	257	Docstring Conventions	David Goodger, Guido van Rossum
IF	272	API for Block Encryption Algorithms v1.0	A.M. Kuchling
IA	287	reStructuredText Docstring Format	David Goodger
IA	290	Code Migration and Modernization	Raymond Hettinger
IF	333	Python Web Server Gateway Interface v1.0	Phillip J. Eby
IA	394	The “python” Command on Unix-Like Systems	Kerrick Staley, Alyssa Coghlan, Barry Warsaw, Petr Viktorin, Miro Hrončok, Carol Willing
IF	399	Pure Python/C Accelerator Module Compatibility Requirements	Brett Cannon	3.3
IF	430	Migrating to Python 3 as the default online documentation	Alyssa Coghlan
IA	434	IDLE Enhancement Exception for All Branches	Todd Rovito, Terry Reedy
IF	452	API for Cryptographic Hash Functions v2.0	A.M. Kuchling, Christian Heimes
IF	457	Notation For Positional-Only Parameters	Larry Hastings
IF	482	Literature Overview for Type Hints	Łukasz Langa
IF	483	The Theory of Type Hints	Guido van Rossum, Ivan Levkivskyi
IA	514	Python registration in the Windows registry	Steve Dower
IF	579	Refactoring C functions and methods	Jeroen Demeyer
IF	588	GitHub Issues Migration Plan	Mariatta
IA	596	Python 3.9 Release Schedule	Łukasz Langa	3.9
IF	607	Reducing CPython’s Feature Delivery Latency	Łukasz Langa, Steve Dower, Alyssa Coghlan	3.9
IA	619	Python 3.10 Release Schedule	Pablo Galindo Salgado	3.10
IF	630	Isolating Extension Modules	Petr Viktorin
IF	635	Structural Pattern Matching: Motivation and Rationale	Tobias Kohn, Guido van Rossum	3.10
IF	636	Structural Pattern Matching: Tutorial	Daniel F Moisset	3.10
IF	659	Specializing Adaptive Interpreter	Mark Shannon
IA	664	Python 3.11 Release Schedule	Pablo Galindo Salgado	3.11
IA	672	Unicode-related Security Considerations for Python	Petr Viktorin
IA	693	Python 3.12 Release Schedule	Thomas Wouters	3.12
IA	719	Python 3.13 Release Schedule	Thomas Wouters	3.13
IF	733	An Evaluation of Python’s Public C API	Erlend Egeberg Aasland, Domenico Andreoli, Stefan Behnel, Carl Friedrich Bolz-Tereick, Simon Cross, Steve Dower, Tim Felgentreff, David Hewitt, Shantanu Jain, Wenzel Jakob, Irit Katriel, Marc-Andre Lemburg, Donghee Na, Karl Nelson, Ronald Oussoren, Antoine Pitrou, Neil Schemenauer, Mark Shannon, Stepan Sindelar, Gregory P. Smith, Eric Snow, Victor Stinner, Guido van Rossum, Petr Viktorin, Carol Willing, William Woodruff, David Woods, Jelle Zijlstra
IA	745	Python 3.14 Release Schedule	Hugo van Kemenade	3.14
IF	762	REPL-acing the default REPL	Pablo Galindo Salgado, Łukasz Langa, Lysandros Nikolaou, Emily Morehouse-Valcarcel	3.13
IA	801	Reserved	Barry Warsaw
IF	3333	Python Web Server Gateway Interface v1.0.1	Phillip J. Eby
IF	8000	Python Language Governance Proposal Overview	Barry Warsaw
IF	8002	Open Source Governance Survey	Barry Warsaw, Łukasz Langa, Antoine Pitrou, Doug Hellmann, Carol Willing
IA	8016	The Steering Council Model	Nathaniel J. Smith, Donald Stufft
IF	8100	January 2019 Steering Council election	Nathaniel J. Smith, Ee Durbin
IF	8101	2020 Term Steering Council election	Ewa Jodlowska, Ee Durbin
IF	8102	2021 Term Steering Council election	Ewa Jodlowska, Ee Durbin, Joe Carey
IF	8103	2022 Term Steering Council election	Ewa Jodlowska, Ee Durbin, Joe Carey
IF	8104	2023 Term Steering Council election	Ee Durbin
IF	8105	2024 Term Steering Council election	Ee Durbin
IF	8106	2025 Term Steering Council election	Ee Durbin

Provisional PEPs (provisionally accepted; interface may still change)

	PEP	Title	Authors
SP	708	Extending the Repository API to Mitigate Dependency Confusion Attacks	Donald Stufft

Accepted PEPs (accepted; may not be implemented yet)

	PEP	Title	Authors
SA	458	Secure PyPI downloads with signed repository metadata	Trishank Karthik Kuppusamy, Vladimir Diaz, Marina Moore, Lukas Puehringer, Joshua Lock, Lois Anne DeLong, Justin Cappos
SA	563	Postponed Evaluation of Annotations	Łukasz Langa	3.7
SA	590	Vectorcall: a fast calling protocol for CPython	Mark Shannon, Jeroen Demeyer	3.8
SA	625	Filename of a Source Distribution	Tzu-ping Chung, Paul Moore
SA	649	Deferred Evaluation Of Annotations Using Descriptors	Larry Hastings	3.14
SA	658	Serve Distribution Metadata in the Simple Repository API	Tzu-ping Chung
SA	668	Marking Python base environments as “externally managed”	Geoffrey Thomas, Matthias Klose, Filipe Laíns, Donald Stufft, Tzu-ping Chung, Stefano Rivera, Elana Hashman, Pradyun Gedam
SA	685	Comparison of extra names for optional distribution dependencies	Brett Cannon
SA	686	Make UTF-8 mode default	Inada Naoki	3.15
SA	687	Isolating modules in the standard library	Erlend Egeberg Aasland, Petr Viktorin	3.12
SA	691	JSON-based Simple API for Python Package Indexes	Donald Stufft, Pradyun Gedam, Cooper Lees, Dustin Ingram
SA	699	Remove private dict version field added in PEP 509	Ken Jin	3.12
SA	701	Syntactic formalization of f-strings	Pablo Galindo, Batuhan Taskaya, Lysandros Nikolaou, Marta Gómez Macías	3.12
SA	703	Making the Global Interpreter Lock Optional in CPython	Sam Gross	3.13
SA	714	Rename dist-info-metadata in the Simple API	Donald Stufft
SA	739	build-details.json 1.0 — a static description file for Python build details	Filipe Laíns	3.14
SA	751	A file format to record Python dependencies for installation reproducibility	Brett Cannon
SA	753	Uniform project URLs in core metadata	William Woodruff, Facundo Tuesca
SA	758	Allow except and except* expressions without parentheses	Pablo Galindo, Brett Cannon	3.14
SA	768	Safe external debugger interface for CPython	Pablo Galindo Salgado, Matt Wozniski, Ivona Stojanovic	3.14

Open PEPs (under consideration)

	PEP	Title	Authors
S	467	Minor API improvements for binary sequences	Alyssa Coghlan, Ethan Furman	3.13
S	480	Surviving a Compromise of PyPI: End-to-end signing of packages	Trishank Karthik Kuppusamy, Vladimir Diaz, Justin Cappos, Marina Moore
S	603	Adding a frozenmap type to collections	Yury Selivanov
S	638	Syntactic Macros	Mark Shannon
S	653	Precise Semantics for Pattern Matching	Mark Shannon
S	661	Sentinel Values	Tal Einat
S	671	Syntax for late-bound function argument defaults	Chris Angelico	3.12
S	679	Allow parentheses in assert statements	Pablo Galindo Salgado	3.12
S	694	Upload 2.0 API for Python Package Indexes	Barry Warsaw, Donald Stufft
S	710	Recording the provenance of installed packages	Fridolín Pokorný
S	711	PyBI: a standard format for distributing Python Binaries	Nathaniel J. Smith
S	718	Subscriptable functions	James Hilton-Balfe	3.13
I	720	Cross-compiling Python packages	Filipe Laíns	3.12
S	725	Specifying external dependencies in pyproject.toml	Pradyun Gedam, Ralf Gommers
S	727	Documentation in Annotated Metadata	Sebastián Ramírez	3.13
S	728	TypedDict with Typed Extra Items	Zixuan James Li	3.14
S	736	Shorthand syntax for keyword arguments at invocation	Joshua Bambrick, Chris Angelico	3.14
S	743	Add Py_COMPAT_API_VERSION to the Python C API	Victor Stinner, Petr Viktorin	3.14
I	744	JIT Compilation	Brandt Bucher, Savannah Ostrowski	3.13
S	746	Type checking Annotated metadata	Adrian Garcia Badaracco	3.14
S	747	Annotating Type Forms	David Foster, Eric Traut	3.14
S	748	A Unified TLS API for Python	Joop van de Pol, William Woodruff	3.14
S	749	Implementing PEP 649	Jelle Zijlstra	3.14
S	750	Template Strings	Jim Baker, Guido van Rossum, Paul Everitt, Koudai Aono, Lysandros Nikolaou, Dave Peck	3.14
S	752	Implicit namespaces for package repositories	Ofek Lev, Jarek Potiuk
P	755	Implicit namespace policy for PyPI	Ofek Lev
S	763	Limiting deletions on PyPI	William Woodruff, Alexis Challande
S	764	Inlined typed dictionaries	Victorien Plot	3.14
I	766	Explicit Priority Choices Among Multiple Indexes	Michael Sarahan
S	767	Annotating Read-Only Attributes	Eneg	3.14
S	769	Add a ‘default’ keyword argument to ‘attrgetter’, ‘itemgetter’ and ‘getitem’	Facundo Batista	3.14
S	770	Improving measurability of Python packages with Software Bill-of-Materials	Seth Larson
S	771	Default Extras for Python Software Packages	Thomas Robitaille, Jonathan Dekhtiar
P	772	Packaging governance process	Barry Warsaw, Deb Nicholson, Pradyun Gedam
S	773	A Python Installation Manager for Windows	Steve Dower
S	774	Removing the LLVM requirement for JIT builds	Savannah Ostrowski	3.14
S	775	Make zlib required to build CPython	Gregory P. Smith, Stan Ulbrych, Petr Viktorin	3.14
I	776	Emscripten Support	Hood Chatham	3.14
S	777	How to Re-invent the Wheel	Emma Harper Smith
S	779	Criteria for supported status for free-threaded Python	Thomas Wouters, Matt Page, Sam Gross	3.14
S	780	ABI features as environment markers	Klaus Zimmermann, Ralf Gommers	3.14
S	781	Make TYPE_CHECKING a built-in constant	Inada Naoki	3.14
S	782	Add PyBytesWriter C API	Victor Stinner	3.14
S	789	Preventing task-cancellation bugs by limiting yield in async generators	Zac Hatfield-Dodds, Nathaniel J. Smith	3.14

Finished PEPs (done, with a stable interface)

	PEP	Title	Authors
SF	100	Python Unicode Integration	Marc-André Lemburg	2.0
SF	201	Lockstep Iteration	Barry Warsaw	2.0
SF	202	List Comprehensions	Barry Warsaw	2.0
SF	203	Augmented Assignments	Thomas Wouters	2.0
SF	205	Weak References	Fred L. Drake, Jr.	2.1
SF	207	Rich Comparisons	Guido van Rossum, David Ascher	2.1
SF	208	Reworking the Coercion Model	Neil Schemenauer, Marc-André Lemburg	2.1
SF	214	Extended Print Statement	Barry Warsaw	2.0
SF	217	Display Hook for Interactive Use	Moshe Zadka	2.1
SF	218	Adding a Built-In Set Object Type	Greg Wilson, Raymond Hettinger	2.2
SF	221	Import As	Thomas Wouters	2.0
SF	223	Change the Meaning of x Escapes	Tim Peters	2.0
SF	227	Statically Nested Scopes	Jeremy Hylton	2.1
SF	229	Using Distutils to Build Python	A.M. Kuchling	2.1
SF	230	Warning Framework	Guido van Rossum	2.1
SF	232	Function Attributes	Barry Warsaw	2.1
SF	234	Iterators	Ka-Ping Yee, Guido van Rossum	2.1
SF	235	Import on Case-Insensitive Platforms	Tim Peters	2.1
SF	236	Back to the __future__	Tim Peters	2.1
SF	237	Unifying Long Integers and Integers	Moshe Zadka, Guido van Rossum	2.2
SF	238	Changing the Division Operator	Moshe Zadka, Guido van Rossum	2.2
SF	250	Using site-packages on Windows	Paul Moore	2.2
SF	252	Making Types Look More Like Classes	Guido van Rossum	2.2
SF	253	Subtyping Built-in Types	Guido van Rossum	2.2
SF	255	Simple Generators	Neil Schemenauer, Tim Peters, Magnus Lie Hetland	2.2
SF	260	Simplify xrange()	Guido van Rossum	2.2
SF	261	Support for “wide” Unicode characters	Paul Prescod	2.2
SF	263	Defining Python Source Code Encodings	Marc-André Lemburg, Martin von Löwis	2.3
SF	264	Future statements in simulated shells	Michael Hudson	2.2
SF	273	Import Modules from Zip Archives	James C. Ahlstrom	2.3
SF	274	Dict Comprehensions	Barry Warsaw	2.7, 3.0
SF	277	Unicode file name support for Windows NT	Neil Hodgson	2.3
SF	278	Universal Newline Support	Jack Jansen	2.3
SF	279	The enumerate() built-in function	Raymond Hettinger	2.3
SF	282	A Logging System	Vinay Sajip, Trent Mick	2.3
SF	285	Adding a bool type	Guido van Rossum	2.3
SF	289	Generator Expressions	Raymond Hettinger	2.4
SF	292	Simpler String Substitutions	Barry Warsaw	2.4
SF	293	Codec Error Handling Callbacks	Walter Dörwald	2.3
SF	301	Package Index and Metadata for Distutils	Richard Jones	2.3
SF	302	New Import Hooks	Just van Rossum, Paul Moore	2.3
SF	305	CSV File API	Kevin Altis, Dave Cole, Andrew McNamara, Skip Montanaro, Cliff Wells	2.3
SF	307	Extensions to the pickle protocol	Guido van Rossum, Tim Peters	2.3
SF	308	Conditional Expressions	Guido van Rossum, Raymond Hettinger	2.5
SF	309	Partial Function Application	Peter Harris	2.5
SF	311	Simplified Global Interpreter Lock Acquisition for Extensions	Mark Hammond	2.3
SF	318	Decorators for Functions and Methods	Kevin D. Smith, Jim J. Jewett, Skip Montanaro, Anthony Baxter	2.4
SF	322	Reverse Iteration	Raymond Hettinger	2.4
SF	324	subprocess - New process module	Peter Astrand	2.4
SF	327	Decimal Data Type	Facundo Batista	2.4
SF	328	Imports: Multi-Line and Absolute/Relative	Aahz	2.4, 2.5, 2.6
SF	331	Locale-Independent Float/String Conversions	Christian R. Reis	2.4
SF	338	Executing modules as scripts	Alyssa Coghlan	2.5
SF	341	Unifying try-except and try-finally	Georg Brandl	2.5
SF	342	Coroutines via Enhanced Generators	Guido van Rossum, Phillip J. Eby	2.5
SF	343	The “with” Statement	Guido van Rossum, Alyssa Coghlan	2.5
SF	352	Required Superclass for Exceptions	Brett Cannon, Guido van Rossum	2.5
SF	353	Using ssize_t as the index type	Martin von Löwis	2.5
SF	357	Allowing Any Object to be Used for Slicing	Travis Oliphant	2.5
SF	358	The “bytes” Object	Neil Schemenauer, Guido van Rossum	2.6, 3.0
SF	362	Function Signature Object	Brett Cannon, Jiwon Seo, Yury Selivanov, Larry Hastings	3.3
SF	366	Main module explicit relative imports	Alyssa Coghlan	2.6, 3.0
SF	370	Per user site-packages directory	Christian Heimes	2.6, 3.0
SF	371	Addition of the multiprocessing package to the standard library	Jesse Noller, Richard Oudkerk	2.6, 3.0
SF	372	Adding an ordered dictionary to collections	Armin Ronacher, Raymond Hettinger	2.7, 3.1
SF	376	Database of Installed Python Distributions	Tarek Ziadé	2.7, 3.2
SF	378	Format Specifier for Thousands Separator	Raymond Hettinger	2.7, 3.1
SF	380	Syntax for Delegating to a Subgenerator	Gregory Ewing	3.3
SF	383	Non-decodable Bytes in System Character Interfaces	Martin von Löwis	3.1
SF	384	Defining a Stable ABI	Martin von Löwis	3.2
SF	389	argparse - New Command Line Parsing Module	Steven Bethard	2.7, 3.2
SF	391	Dictionary-Based Configuration For Logging	Vinay Sajip	2.7, 3.2
SF	393	Flexible String Representation	Martin von Löwis	3.3
SF	397	Python launcher for Windows	Mark Hammond, Martin von Löwis	3.3
SF	405	Python Virtual Environments	Carl Meyer	3.3
SF	409	Suppressing exception context	Ethan Furman	3.3
SF	412	Key-Sharing Dictionary	Mark Shannon	3.3
SF	414	Explicit Unicode Literal for Python 3.3	Armin Ronacher, Alyssa Coghlan	3.3
SF	415	Implement context suppression with exception attributes	Benjamin Peterson	3.3
SF	417	Including mock in the Standard Library	Michael Foord	3.3
SF	418	Add monotonic time, performance counter, and process time functions	Cameron Simpson, Jim J. Jewett, Stephen J. Turnbull, Victor Stinner	3.3
SF	420	Implicit Namespace Packages	Eric V. Smith	3.3
SF	421	Adding sys.implementation	Eric Snow	3.3
SF	424	A method for exposing a length hint	Alex Gaynor	3.4
SF	425	Compatibility Tags for Built Distributions	Daniel Holth	3.4
SF	427	The Wheel Binary Package Format 1.0	Daniel Holth
SF	428	The pathlib module – object-oriented filesystem paths	Antoine Pitrou	3.4
SF	435	Adding an Enum type to the Python standard library	Barry Warsaw, Eli Bendersky, Ethan Furman	3.4
SF	436	The Argument Clinic DSL	Larry Hastings	3.4
SF	440	Version Identification and Dependency Specification	Alyssa Coghlan, Donald Stufft
SF	441	Improving Python ZIP Application Support	Daniel Holth, Paul Moore	3.5
SF	442	Safe object finalization	Antoine Pitrou	3.4
SF	443	Single-dispatch generic functions	Łukasz Langa	3.4
SF	445	Add new APIs to customize Python memory allocators	Victor Stinner	3.4
SF	446	Make newly created file descriptors non-inheritable	Victor Stinner	3.4
SF	448	Additional Unpacking Generalizations	Joshua Landau	3.5
SF	450	Adding A Statistics Module To The Standard Library	Steven D’Aprano	3.4
SF	451	A ModuleSpec Type for the Import System	Eric Snow	3.4
SF	453	Explicit bootstrapping of pip in Python installations	Donald Stufft, Alyssa Coghlan
SF	454	Add a new tracemalloc module to trace Python memory allocations	Victor Stinner	3.4
SF	456	Secure and interchangeable hash algorithm	Christian Heimes	3.4
SF	461	Adding % formatting to bytes and bytearray	Ethan Furman	3.5
SF	465	A dedicated infix operator for matrix multiplication	Nathaniel J. Smith	3.5
SF	466	Network Security Enhancements for Python 2.7.x	Alyssa Coghlan	2.7.9
SF	468	Preserving the order of **kwargs in a function.	Eric Snow	3.6
SF	471	os.scandir() function – a better and faster directory iterator	Ben Hoyt	3.5
SF	475	Retry system calls failing with EINTR	Charles-François Natali, Victor Stinner	3.5
SF	476	Enabling certificate verification by default for stdlib http clients	Alex Gaynor	2.7.9, 3.4.3, 3.5
SF	477	Backport ensurepip (PEP 453) to Python 2.7	Donald Stufft, Alyssa Coghlan
SF	479	Change StopIteration handling inside generators	Chris Angelico, Guido van Rossum	3.5
SF	484	Type Hints	Guido van Rossum, Jukka Lehtosalo, Łukasz Langa	3.5
SF	485	A Function for testing approximate equality	Christopher Barker	3.5
SF	486	Make the Python Launcher aware of virtual environments	Paul Moore	3.5
SF	487	Simpler customisation of class creation	Martin Teichmann	3.6
SF	488	Elimination of PYO files	Brett Cannon	3.5
SF	489	Multi-phase extension module initialization	Petr Viktorin, Stefan Behnel, Alyssa Coghlan	3.5
SF	492	Coroutines with async and await syntax	Yury Selivanov	3.5
SF	493	HTTPS verification migration tools for Python 2.7	Alyssa Coghlan, Robert Kuska, Marc-André Lemburg	2.7.12
SF	495	Local Time Disambiguation	Alexander Belopolsky, Tim Peters	3.6
SF	498	Literal String Interpolation	Eric V. Smith	3.6
SF	503	Simple Repository API	Donald Stufft
SF	506	Adding A Secrets Module To The Standard Library	Steven D’Aprano	3.6
SF	508	Dependency specification for Python Software Packages	Robert Collins
SF	515	Underscores in Numeric Literals	Georg Brandl, Serhiy Storchaka	3.6
SF	517	A build-system independent format for source trees	Nathaniel J. Smith, Thomas Kluyver
SF	518	Specifying Minimum Build System Requirements for Python Projects	Brett Cannon, Nathaniel J. Smith, Donald Stufft
SF	519	Adding a file system path protocol	Brett Cannon, Koos Zevenhoven	3.6
SF	520	Preserving Class Attribute Definition Order	Eric Snow	3.6
SF	523	Adding a frame evaluation API to CPython	Brett Cannon, Dino Viehland	3.6
SF	524	Make os.urandom() blocking on Linux	Victor Stinner	3.6
SF	525	Asynchronous Generators	Yury Selivanov	3.6
SF	526	Syntax for Variable Annotations	Ryan Gonzalez, Philip House, Ivan Levkivskyi, Lisa Roach, Guido van Rossum	3.6
SF	527	Removing Un(der)used file types/extensions on PyPI	Donald Stufft
SF	528	Change Windows console encoding to UTF-8	Steve Dower	3.6
SF	529	Change Windows filesystem encoding to UTF-8	Steve Dower	3.6
SF	530	Asynchronous Comprehensions	Yury Selivanov	3.6
SF	538	Coercing the legacy C locale to a UTF-8 based locale	Alyssa Coghlan	3.7
SF	539	A New C-API for Thread-Local Storage in CPython	Erik M. Bray, Masayuki Yamamoto	3.7
SF	540	Add a new UTF-8 Mode	Victor Stinner	3.7
SF	544	Protocols: Structural subtyping (static duck typing)	Ivan Levkivskyi, Jukka Lehtosalo, Łukasz Langa	3.8
SF	552	Deterministic pycs	Benjamin Peterson	3.7
SF	553	Built-in breakpoint()	Barry Warsaw	3.7
SF	557	Data Classes	Eric V. Smith	3.7
SF	560	Core support for typing module and generic types	Ivan Levkivskyi	3.7
SF	561	Distributing and Packaging Type Information	Emma Harper Smith	3.7
SF	562	Module __getattr__ and __dir__	Ivan Levkivskyi	3.7
SF	564	Add new time functions with nanosecond resolution	Victor Stinner	3.7
SF	565	Show DeprecationWarning in __main__	Alyssa Coghlan	3.7
SF	566	Metadata for Python Software Packages 2.1	Dustin Ingram	3.x
SF	567	Context Variables	Yury Selivanov	3.7
SF	570	Python Positional-Only Parameters	Larry Hastings, Pablo Galindo, Mario Corchero, Eric N. Vander Weele	3.8
SF	572	Assignment Expressions	Chris Angelico, Tim Peters, Guido van Rossum	3.8
SF	573	Module State Access from C Extension Methods	Petr Viktorin, Alyssa Coghlan, Eric Snow, Marcel Plch	3.9
SF	574	Pickle protocol 5 with out-of-band data	Antoine Pitrou	3.8
SF	578	Python Runtime Audit Hooks	Steve Dower	3.8
SF	584	Add Union Operators To dict	Steven D’Aprano, Brandt Bucher	3.9
SF	585	Type Hinting Generics In Standard Collections	Łukasz Langa	3.9
SF	586	Literal Types	Michael Lee, Ivan Levkivskyi, Jukka Lehtosalo	3.8
SF	587	Python Initialization Configuration	Victor Stinner, Alyssa Coghlan	3.8
SF	589	TypedDict: Type Hints for Dictionaries with a Fixed Set of Keys	Jukka Lehtosalo	3.8
SF	591	Adding a final qualifier to typing	Michael J. Sullivan, Ivan Levkivskyi	3.8
SF	592	Adding “Yank” Support to the Simple API	Donald Stufft
SF	593	Flexible function and variable annotations	Till Varoquaux, Konstantin Kashin	3.9
SF	594	Removing dead batteries from the standard library	Christian Heimes, Brett Cannon	3.11
SF	597	Add optional EncodingWarning	Inada Naoki	3.10
SF	600	Future ‘manylinux’ Platform Tags for Portable Linux Built Distributions	Nathaniel J. Smith, Thomas Kluyver
SF	604	Allow writing union types as X \| Y	Philippe PRADOS, Maggie Moss	3.10
SF	610	Recording the Direct URL Origin of installed distributions	Stéphane Bidoul, Chris Jerdonek
SF	612	Parameter Specification Variables	Mark Mendoza	3.10
SF	613	Explicit Type Aliases	Shannon Zhu	3.10
SF	614	Relaxing Grammar Restrictions On Decorators	Brandt Bucher	3.9
SF	615	Support for the IANA Time Zone Database in the Standard Library	Paul Ganssle	3.9
SF	616	String methods to remove prefixes and suffixes	Dennis Sweeney	3.9
SF	617	New PEG parser for CPython	Guido van Rossum, Pablo Galindo, Lysandros Nikolaou	3.9
SF	618	Add Optional Length-Checking To zip	Brandt Bucher	3.10
SF	621	Storing project metadata in pyproject.toml	Brett Cannon, Dustin Ingram, Paul Ganssle, Pradyun Gedam, Sébastien Eustace, Thomas Kluyver, Tzu-ping Chung
SF	623	Remove wstr from Unicode	Inada Naoki	3.10
SF	624	Remove Py_UNICODE encoder APIs	Inada Naoki	3.11
SF	626	Precise line numbers for debugging and other tools.	Mark Shannon	3.10
SF	627	Recording installed projects	Petr Viktorin
SF	628	Add math.tau	Alyssa Coghlan	3.6
SF	629	Versioning PyPI’s Simple API	Donald Stufft
SF	632	Deprecate distutils module	Steve Dower	3.10
SF	634	Structural Pattern Matching: Specification	Brandt Bucher, Guido van Rossum	3.10
SF	639	Improving License Clarity with Better Package Metadata	Philippe Ombredanne, C.A.M. Gerlach, Karolina Surma
SF	643	Metadata for Package Source Distributions	Paul Moore
SF	644	Require OpenSSL 1.1.1 or newer	Christian Heimes	3.10
SF	646	Variadic Generics	Mark Mendoza, Matthew Rahtz, Pradeep Kumar Srinivasan, Vincent Siles	3.11
SF	647	User-Defined Type Guards	Eric Traut	3.10
SF	652	Maintaining the Stable ABI	Petr Viktorin	3.10
SF	654	Exception Groups and except*	Irit Katriel, Yury Selivanov, Guido van Rossum	3.11
SF	655	Marking individual TypedDict items as required or potentially-missing	David Foster	3.11
SF	656	Platform Tag for Linux Distributions Using Musl	Tzu-ping Chung
SF	657	Include Fine Grained Error Locations in Tracebacks	Pablo Galindo, Batuhan Taskaya, Ammar Askar	3.11
SF	660	Editable installs for pyproject.toml based builds (wheel based)	Daniel Holth, Stéphane Bidoul
SF	667	Consistent views of namespaces	Mark Shannon, Tian Gao	3.13
SF	669	Low Impact Monitoring for CPython	Mark Shannon	3.12
SF	670	Convert macros to functions in the Python C API	Erlend Egeberg Aasland, Victor Stinner	3.11
SF	673	Self Type	Pradeep Kumar Srinivasan, James Hilton-Balfe	3.11
SF	675	Arbitrary Literal String Type	Pradeep Kumar Srinivasan, Graham Bleaney	3.11
SF	678	Enriching Exceptions with Notes	Zac Hatfield-Dodds	3.11
SF	680	tomllib: Support for Parsing TOML in the Standard Library	Taneli Hukkinen, Shantanu Jain	3.11
SF	681	Data Class Transforms	Erik De Bonte, Eric Traut	3.11
SF	682	Format Specifier for Signed Zero	John Belmonte	3.11
SF	683	Immortal Objects, Using a Fixed Refcount	Eric Snow, Eddie Elizondo	3.12
SF	684	A Per-Interpreter GIL	Eric Snow	3.12
SF	688	Making the buffer protocol accessible in Python	Jelle Zijlstra	3.12
SF	689	Unstable C API tier	Petr Viktorin	3.12
SF	692	Using TypedDict for more precise **kwargs typing	Franek Magiera	3.12
SF	695	Type Parameter Syntax	Eric Traut	3.12
SF	696	Type Defaults for Type Parameters	James Hilton-Balfe	3.13
SF	697	Limited C API for Extending Opaque Types	Petr Viktorin	3.12
SF	698	Override Decorator for Static Typing	Steven Troxler, Joshua Xu, Shannon Zhu	3.12
SF	700	Additional Fields for the Simple API for Package Indexes	Paul Moore
SF	702	Marking deprecations using the type system	Jelle Zijlstra	3.13
SF	705	TypedDict: Read-only items	Alice Purcell	3.13
SF	706	Filter for tarfile.extractall	Petr Viktorin	3.12
SF	709	Inlined comprehensions	Carl Meyer	3.12
SF	715	Disabling bdist_egg distribution uploads on PyPI	William Woodruff
SF	721	Using tarfile.data_filter for source distribution extraction	Petr Viktorin	3.12
SF	723	Inline script metadata	Ofek Lev
SF	730	Adding iOS as a supported platform	Russell Keith-Magee	3.13
SF	735	Dependency Groups in pyproject.toml	Stephen Rosen
SF	737	C API to format a type fully qualified name	Victor Stinner	3.13
SF	738	Adding Android as a supported platform	Malcolm Smith	3.13
SF	740	Index support for digital attestations	William Woodruff, Facundo Tuesca, Dustin Ingram
SF	741	Python Configuration C API	Victor Stinner	3.14
SF	742	Narrowing types with TypeIs	Jelle Zijlstra	3.13
SF	757	C API to import-export Python integers	Sergey B Kirpichev, Victor Stinner	3.14
SF	765	Disallow return/break/continue that exit a finally block	Irit Katriel, Alyssa Coghlan	3.14
SF	3101	Advanced String Formatting	Talin	3.0
SF	3102	Keyword-Only Arguments	Talin	3.0
SF	3104	Access to Names in Outer Scopes	Ka-Ping Yee	3.0
SF	3105	Make print a function	Georg Brandl	3.0
SF	3106	Revamping dict.keys(), .values() and .items()	Guido van Rossum	3.0
SF	3107	Function Annotations	Collin Winter, Tony Lownds	3.0
SF	3108	Standard Library Reorganization	Brett Cannon	3.0
SF	3109	Raising Exceptions in Python 3000	Collin Winter	3.0
SF	3110	Catching Exceptions in Python 3000	Collin Winter	3.0
SF	3111	Simple input built-in in Python 3000	Andre Roberge	3.0
SF	3112	Bytes literals in Python 3000	Jason Orendorff	3.0
SF	3113	Removal of Tuple Parameter Unpacking	Brett Cannon	3.0
SF	3114	Renaming iterator.next() to iterator.__next__()	Ka-Ping Yee	3.0
SF	3115	Metaclasses in Python 3000	Talin	3.0
SF	3116	New I/O	Daniel Stutzbach, Guido van Rossum, Mike Verdone	3.0
SF	3118	Revising the buffer protocol	Travis Oliphant, Carl Banks	3.0
SF	3119	Introducing Abstract Base Classes	Guido van Rossum, Talin	3.0
SF	3120	Using UTF-8 as the default source encoding	Martin von Löwis	3.0
SF	3121	Extension Module Initialization and Finalization	Martin von Löwis	3.0
SF	3123	Making PyObject_HEAD conform to standard C	Martin von Löwis	3.0
SF	3127	Integer Literal Support and Syntax	Patrick Maupin	3.0
SF	3129	Class Decorators	Collin Winter	3.0
SF	3131	Supporting Non-ASCII Identifiers	Martin von Löwis	3.0
SF	3132	Extended Iterable Unpacking	Georg Brandl	3.0
SF	3134	Exception Chaining and Embedded Tracebacks	Ka-Ping Yee	3.0
SF	3135	New Super	Calvin Spealman, Tim Delaney, Lie Ryan	3.0
SF	3137	Immutable Bytes and Mutable Buffer	Guido van Rossum	3.0
SF	3138	String representation in Python 3000	Atsuo Ishimoto	3.0
SF	3141	A Type Hierarchy for Numbers	Jeffrey Yasskin	3.0
SF	3144	IP Address Manipulation Library for the Python Standard Library	Peter Moody	3.3
SF	3147	PYC Repository Directories	Barry Warsaw	3.2
SF	3148	futures - execute computations asynchronously	Brian Quinlan	3.2
SF	3149	ABI version tagged .so files	Barry Warsaw	3.2
SF	3151	Reworking the OS and IO exception hierarchy	Antoine Pitrou	3.3
SF	3154	Pickle protocol version 4	Antoine Pitrou	3.4
SF	3155	Qualified name for classes and functions	Antoine Pitrou	3.3
SF	3156	Asynchronous IO Support Rebooted: the “asyncio” Module	Guido van Rossum	3.3

Historical Meta-PEPs and Informational PEPs

	PEP	Title	Authors
PS	5	Guidelines for Language Evolution	Paul Prescod
PS	6	Bug Fix Releases	Aahz, Anthony Baxter
IF	160	Python 1.6 Release Schedule	Fred L. Drake, Jr.	1.6
IF	200	Python 2.0 Release Schedule	Jeremy Hylton	2.0
IF	226	Python 2.1 Release Schedule	Jeremy Hylton	2.1
IF	251	Python 2.2 Release Schedule	Barry Warsaw, Guido van Rossum	2.2
IF	283	Python 2.3 Release Schedule	Guido van Rossum	2.3
IF	320	Python 2.4 Release Schedule	Barry Warsaw, Raymond Hettinger, Anthony Baxter	2.4
PF	347	Migrating the Python CVS to Subversion	Martin von Löwis
IF	356	Python 2.5 Release Schedule	Neal Norwitz, Guido van Rossum, Anthony Baxter	2.5
PF	360	Externally Maintained Packages	Brett Cannon
IF	361	Python 2.6 and 3.0 Release Schedule	Neal Norwitz, Barry Warsaw	2.6, 3.0
IF	373	Python 2.7 Release Schedule	Benjamin Peterson	2.7
PF	374	Choosing a distributed VCS for the Python project	Brett Cannon, Stephen J. Turnbull, Alexandre Vassalotti, Barry Warsaw, Dirkjan Ochtman
IF	375	Python 3.1 Release Schedule	Benjamin Peterson	3.1
PF	385	Migrating from Subversion to Mercurial	Dirkjan Ochtman, Antoine Pitrou, Georg Brandl
IF	392	Python 3.2 Release Schedule	Georg Brandl	3.2
IF	398	Python 3.3 Release Schedule	Georg Brandl	3.3
IF	404	Python 2.8 Un-release Schedule	Barry Warsaw	2.8
IF	429	Python 3.4 Release Schedule	Larry Hastings	3.4
PS	438	Transitioning to release-file hosting on PyPI	Holger Krekel, Carl Meyer
PF	449	Removal of the PyPI Mirror Auto Discovery and Naming Scheme	Donald Stufft
PF	464	Removal of the PyPI Mirror Authenticity API	Donald Stufft
PF	470	Removing External Hosting Support on PyPI	Donald Stufft
IF	478	Python 3.5 Release Schedule	Larry Hastings	3.5
IF	494	Python 3.6 Release Schedule	Ned Deily	3.6
PF	512	Migrating from hg.python.org to GitHub	Brett Cannon
IF	537	Python 3.7 Release Schedule	Ned Deily	3.7
PF	541	Package Index Name Retention	Łukasz Langa
IF	569	Python 3.8 Release Schedule	Łukasz Langa	3.8
PF	581	Using GitHub Issues for CPython	Mariatta
PF	3000	Python 3000	Guido van Rossum
PF	3002	Procedure for Backwards-Incompatible Changes	Steven Bethard
PF	3003	Python Language Moratorium	Brett Cannon, Jesse Noller, Guido van Rossum
PF	3099	Things that will Not Change in Python 3000	Georg Brandl
PF	3100	Miscellaneous Python 3.0 Plans	Brett Cannon
PF	8001	Python Governance Voting Process	Brett Cannon, Christian Heimes, Donald Stufft, Eric Snow, Gregory P. Smith, Łukasz Langa, Mariatta, Nathaniel J. Smith, Pablo Galindo Salgado, Raymond Hettinger, Tal Einat, Tim Peters, Zachary Ware

Deferred PEPs (postponed pending further research or updates)

	PEP	Title	Authors
SD	213	Attribute Access Handlers	Paul Prescod	2.1
SD	219	Stackless Python	Gordon McMillan	2.1
SD	222	Web Library Enhancements	A.M. Kuchling	2.1
SD	233	Python Online Help	Paul Prescod	2.1
SD	267	Optimized Access to Module Namespaces	Jeremy Hylton	2.2
SD	269	Pgen Module for Python	Jonathan Riehl	2.2
SD	280	Optimizing access to globals	Guido van Rossum	2.3
SD	286	Enhanced Argument Tuples	Martin von Löwis	2.3
SD	312	Simple Implicit Lambda	Roman Suzi, Alex Martelli	2.4
SD	316	Programming by Contract for Python	Terence Way
SD	323	Copyable Iterators	Alex Martelli	2.5
SD	337	Logging Usage in the Standard Library	Michael P. Dubner	2.5
SD	368	Standard image protocol and class	Lino Mastrodomenico	2.6, 3.0
SD	400	Deprecate codecs.StreamReader and codecs.StreamWriter	Victor Stinner	3.3
SD	403	General purpose decorator clause (aka “@in” clause)	Alyssa Coghlan	3.4
PD	407	New release cycle and introducing long-term support versions	Antoine Pitrou, Georg Brandl, Barry Warsaw
SD	419	Protecting cleanup statements from interruptions	Paul Colomiets	3.3
ID	423	Naming conventions and recipes related to packaging	Benoit Bryon
ID	444	Python Web3 Interface	Chris McDonough, Armin Ronacher
SD	447	Add __getdescriptor__ method to metaclass	Ronald Oussoren
SD	491	The Wheel Binary Package Format 1.9	Daniel Holth
SD	499	python -m foo should also bind ‘foo’ in sys.modules	Cameron Simpson, Chris Angelico, Joseph Jevnik	3.10
SD	505	None-aware operators	Mark E. Haase, Steve Dower	3.8
SD	532	A circuit breaking protocol and binary operators	Alyssa Coghlan, Mark E. Haase	3.8
SD	533	Deterministic cleanup for iterators	Nathaniel J. Smith
SD	534	Improved Errors for Missing Standard Library Modules	Tomáš Orsava, Petr Viktorin, Alyssa Coghlan
SD	535	Rich comparison chaining	Alyssa Coghlan	3.8
SD	547	Running extension modules using the -m option	Marcel Plch, Petr Viktorin	3.7
SD	556	Threaded garbage collection	Antoine Pitrou	3.7
SD	568	Generator-sensitivity for Context Variables	Nathaniel J. Smith	3.8
SD	674	Disallow using macros as l-values	Victor Stinner	3.12
SD	734	Multiple Interpreters in the Stdlib	Eric Snow	3.13
SD	3124	Overloading, Generic Functions, Interfaces, and Adaptation	Phillip J. Eby
SD	3143	Standard daemon process library	Ben Finney	3.x
SD	3150	Statement local namespaces (aka “given” clause)	Alyssa Coghlan	3.4

Rejected, Superseded, and Withdrawn PEPs

	PEP	Title	Authors
PW	3	Guidelines for Handling Bug Reports	Jeremy Hylton
PW	9	Sample Plaintext PEP Template	Barry Warsaw
PW	42	Feature Requests	Jeremy Hylton
IS	102	Doing Python Micro Releases	Anthony Baxter, Barry Warsaw, Guido van Rossum
IW	103	Collecting information about git	Oleg Broytman
SR	204	Range Literals	Thomas Wouters	2.0
IW	206	Python Advanced Library	A.M. Kuchling
SW	209	Multi-dimensional Arrays	Paul Barrett, Travis Oliphant	2.2
SR	210	Decoupling the Interpreter Loop	David Ascher	2.1
SR	211	Adding A New Outer Product Operator	Greg Wilson	2.1
SR	212	Loop Counter Iteration	Peter Schneider-Kamp	2.1
SS	215	String Interpolation	Ka-Ping Yee	2.1
IW	216	Docstring Format	Moshe Zadka
IR	220	Coroutines, Generators, Continuations	Gordon McMillan
SR	224	Attribute Docstrings	Marc-André Lemburg	2.1
SR	225	Elementwise/Objectwise Operators	Huaiyu Zhu, Gregory Lielens	2.1
SW	228	Reworking Python’s Numeric Model	Moshe Zadka, Guido van Rossum
SR	231	__findattr__()	Barry Warsaw	2.1
SR	239	Adding a Rational Type to Python	Christopher A. Craig, Moshe Zadka	2.2
SR	240	Adding a Rational Literal to Python	Christopher A. Craig, Moshe Zadka	2.2
SS	241	Metadata for Python Software Packages	A.M. Kuchling
SW	242	Numeric Kinds	Paul F. Dubois	2.2
SW	243	Module Repository Upload Mechanism	Sean Reifschneider	2.1
SR	244	The directive statement	Martin von Löwis	2.1
SR	245	Python Interface Syntax	Michel Pelletier	2.2
SR	246	Object Adaptation	Alex Martelli, Clark C. Evans	2.5
SR	254	Making Classes Look More Like Types	Guido van Rossum	2.2
SR	256	Docstring Processing System Framework	David Goodger
SR	258	Docutils Design Specification	David Goodger
SR	259	Omit printing newline after newline	Guido van Rossum	2.2
SR	262	A Database of Installed Python Packages	A.M. Kuchling
SR	265	Sorting Dictionaries by Value	Grant Griffin	2.2
SW	266	Optimizing Global Variable/Attribute Access	Skip Montanaro	2.3
SR	268	Extended HTTP functionality and WebDAV	Greg Stein	2.x
SR	270	uniq method for list objects	Jason Petrone	2.2
SR	271	Prefixing sys.path by command line option	Frédéric B. Giacometti	2.2
SR	275	Switching on Multiple Values	Marc-André Lemburg	2.6
SR	276	Simple Iterator for ints	Jim Althoff	2.3
SR	281	Loop Counter Iteration with range and xrange	Magnus Lie Hetland	2.3
SR	284	Integer for-loops	David Eppstein, Gregory Ewing	2.3
SW	288	Generators Attributes and Exceptions	Raymond Hettinger	2.5
IS	291	Backward Compatibility for the Python 2 Standard Library	Neal Norwitz	2.3
SR	294	Type Names in the types Module	Oren Tirosh	2.5
SR	295	Interpretation of multiline string constants	Stepan Koltsov	3.0
SW	296	Adding a bytes Object Type	Scott Gilbert	2.3
SR	297	Support for System Upgrades	Marc-André Lemburg	2.6
SW	298	The Locked Buffer Interface	Thomas Heller	2.3
SR	299	Special __main__() function in modules	Jeff Epler	2.3
SR	303	Extend divmod() for Multiple Divisors	Thomas Bellman	2.3
SW	304	Controlling Generation of Bytecode Files	Skip Montanaro
IW	306	How to Change Python’s Grammar	Michael Hudson, Jack Diederich, Alyssa Coghlan, Benjamin Peterson
SR	310	Reliable Acquisition/Release Pairs	Michael Hudson, Paul Moore	2.4
SR	313	Adding Roman Numeral Literals to Python	Mike Meyer	2.4
SS	314	Metadata for Python Software Packages 1.1	A.M. Kuchling, Richard Jones	2.5
SR	315	Enhanced While Loop	Raymond Hettinger, W Isaac Carroll	2.5
SR	317	Eliminate Implicit Exception Instantiation	Steven Taschuk	2.4
SR	319	Python Synchronize/Asynchronize Block	Michel Pelletier	2.4
SW	321	Date/Time Parsing and Formatting	A.M. Kuchling	2.4
SR	325	Resource-Release Support for Generators	Samuele Pedroni	2.4
SR	326	A Case for Top and Bottom Values	Josiah Carlson, Terry Reedy	2.4
SR	329	Treating Builtins as Constants in the Standard Library	Raymond Hettinger	2.4
SR	330	Python Bytecode Verification	Michel Pelletier	2.6
SR	332	Byte vectors and String/Unicode Unification	Skip Montanaro	2.5
SW	334	Simple Coroutines via SuspendIteration	Clark C. Evans	3.0
SR	335	Overloadable Boolean Operators	Gregory Ewing	3.3
SR	336	Make None Callable	Andrew McClelland
IW	339	Design of the CPython Compiler	Brett Cannon
SR	340	Anonymous Block Statements	Guido van Rossum
SS	344	Exception Chaining and Embedded Tracebacks	Ka-Ping Yee	2.5
SS	345	Metadata for Python Software Packages 1.2	Richard Jones	2.7
SW	346	User Defined (“with”) Statements	Alyssa Coghlan	2.5
SR	348	Exception Reorganization for Python 3.0	Brett Cannon
SR	349	Allow str() to return unicode strings	Neil Schemenauer	2.5
IR	350	Codetags	Micah Elliott
SR	351	The freeze protocol	Barry Warsaw	2.5
SS	354	Enumerations in Python	Ben Finney	2.6
SR	355	Path - Object oriented filesystem paths	Björn Lindqvist	2.5
SW	359	The “make” Statement	Steven Bethard	2.6
SR	363	Syntax For Dynamic Attribute Access	Ben North
SW	364	Transitioning to the Py3K Standard Library	Barry Warsaw	2.6
SR	365	Adding the pkg_resources module	Phillip J. Eby
SS	367	New Super	Calvin Spealman, Tim Delaney	2.6
SW	369	Post import hooks	Christian Heimes	2.6, 3.0
SR	377	Allow __enter__() methods to skip the statement body	Alyssa Coghlan	2.7, 3.1
SW	379	Adding an Assignment Expression	Jervis Whitley	2.7, 3.2
SW	381	Mirroring infrastructure for PyPI	Tarek Ziadé, Martin von Löwis
SR	382	Namespace Packages	Martin von Löwis	3.2
SS	386	Changing the version comparison module in Distutils	Tarek Ziadé
SR	390	Static metadata for Distutils	Tarek Ziadé	2.7, 3.2
SW	395	Qualified Names for Modules	Alyssa Coghlan	3.4
IW	396	Module Version Numbers	Barry Warsaw
PR	401	BDFL Retirement	Barry Warsaw, Brett Cannon
SR	402	Simplified Package Layout and Partitioning	Phillip J. Eby	3.3
SW	406	Improved Encapsulation of Import State	Alyssa Coghlan, Greg Slodkowicz	3.4
SR	408	Standard library __preview__ package	Alyssa Coghlan, Eli Bendersky	3.3
SR	410	Use decimal.Decimal type for timestamps	Victor Stinner	3.3
IS	411	Provisional packages in the Python standard library	Alyssa Coghlan, Eli Bendersky	3.3
PW	413	Faster evolution of the Python Standard Library	Alyssa Coghlan
SR	416	Add a frozendict builtin type	Victor Stinner	3.3
SW	422	Simpler customisation of class creation	Alyssa Coghlan, Daniel Urban	3.5
IW	426	Metadata for Python Software Packages 2.0	Alyssa Coghlan, Daniel Holth, Donald Stufft
SS	431	Time zone support improvements	Lennart Regebro
SW	432	Restructuring the CPython startup sequence	Alyssa Coghlan, Victor Stinner, Eric Snow
SS	433	Easier suppression of file descriptor inheritance	Victor Stinner	3.4
SR	437	A DSL for specifying signatures, annotations and argument converters	Stefan Krah	3.4
SR	439	Inclusion of implicit pip bootstrap in Python installation	Richard Jones	3.4
SR	455	Adding a key-transforming dictionary to collections	Antoine Pitrou	3.5
SW	459	Standard Metadata Extensions for Python Software Packages	Alyssa Coghlan
SW	460	Add binary interpolation and formatting	Antoine Pitrou	3.5
PW	462	Core development workflow automation for CPython	Alyssa Coghlan
SR	463	Exception-catching expressions	Chris Angelico	3.5
SW	469	Migration of dict iteration code to Python 3	Alyssa Coghlan	3.5
SR	472	Support for indexing with keyword arguments	Stefano Borini, Joseph Martinot-Lagarde	3.6
SR	473	Adding structured data to built-in exceptions	Sebastian Kreft
PW	474	Creating forge.python.org	Alyssa Coghlan
PW	481	Migrate CPython to Git, Github, and Phabricator	Donald Stufft
SR	490	Chain exceptions at C level	Victor Stinner	3.6
IR	496	Environment Markers	James Polley
PR	497	A standard mechanism for backward compatibility	Ed Schofield
SR	500	A protocol for delegating datetime methods to their tzinfo implementations	Alexander Belopolsky, Tim Peters
SW	501	General purpose template literal strings	Alyssa Coghlan, Nick Humrich	3.12
IR	502	String Interpolation - Extended Discussion	Mike G. Miller	3.6
SW	504	Using the System RNG by default	Alyssa Coghlan	3.6
PR	507	Migrate CPython to Git and GitLab	Barry Warsaw
SS	509	Add a private version to dict	Victor Stinner	3.6
SR	510	Specialize functions with guards	Victor Stinner	3.6
SR	511	API for code transformers	Victor Stinner	3.6
IS	513	A Platform Tag for Portable Linux Built Distributions	Robert T. McGibbon, Nathaniel J. Smith
SR	516	Build system abstraction for pip/conda etc	Robert Collins, Nathaniel J. Smith
SW	521	Managing global context via ‘with’ blocks in generators and coroutines	Nathaniel J. Smith	3.6
SR	522	Allow BlockingIOError in security sensitive APIs	Alyssa Coghlan, Nathaniel J. Smith	3.6
SW	531	Existence checking operators	Alyssa Coghlan	3.7
SW	536	Final Grammar for Literal String Interpolation	Philipp Angerer	3.7
SR	542	Dot Notation Assignment In Function Header	Markus Meskanen
SW	543	A Unified TLS API for Python	Cory Benfield, Christian Heimes	3.7
SR	546	Backport ssl.MemoryBIO and ssl.SSLObject to Python 2.7	Victor Stinner, Cory Benfield	2.7
SR	548	More Flexible Loop Control	R David Murray	3.7
SR	549	Instance Descriptors	Larry Hastings	3.7
SW	550	Execution Context	Yury Selivanov, Elvis Pranskevichus	3.7
IW	551	Security transparency in the Python runtime	Steve Dower	3.7
SS	554	Multiple Interpreters in the Stdlib	Eric Snow	3.13
SW	555	Context-local variables (contextvars)	Koos Zevenhoven	3.7
SW	558	Defined semantics for locals()	Alyssa Coghlan	3.13
SR	559	Built-in noop()	Barry Warsaw	3.7
IS	571	The manylinux2010 Platform Tag	Mark Williams, Geoffrey Thomas, Thomas Kluyver
SW	575	Unifying function/method classes	Jeroen Demeyer	3.8
SW	576	Rationalize Built-in function classes	Mark Shannon	3.8
SW	577	Augmented Assignment Expressions	Alyssa Coghlan	3.8
SR	580	The C call protocol	Jeroen Demeyer	3.8
SR	582	Python local packages directory	Kushal Das, Steve Dower, Donald Stufft, Alyssa Coghlan	3.12
IW	583	A Concurrency Memory Model for Python	Jeffrey Yasskin
IW	595	Improving bugs.python.org	Ezio Melotti, Berker Peksag
IW	598	Introducing incremental feature releases	Alyssa Coghlan	3.9
IS	599	The manylinux2014 Platform Tag	Dustin Ingram
SR	601	Forbid return/break/continue breaking out of finally	Damien George, Batuhan Taskaya	3.8
IR	605	A rolling feature release stream for CPython	Steve Dower, Alyssa Coghlan	3.9
SR	606	Python Compatibility Version	Victor Stinner	3.9
SR	608	Coordinated Python release	Miro Hrončok, Victor Stinner	3.9
SW	611	The one million limit	Mark Shannon
SW	620	Hide implementation details from the C API	Victor Stinner	3.12
SS	622	Structural Pattern Matching	Brandt Bucher, Daniel F Moisset, Tobias Kohn, Ivan Levkivskyi, Guido van Rossum, Talin	3.10
SS	631	Dependency specification in pyproject.toml based on PEP 508	Ofek Lev
SR	633	Dependency specification in pyproject.toml using an exploded TOML table	Laurie Opperman, Arun Babu Neelicattu
SR	637	Support for indexing with keyword arguments	Stefano Borini	3.10
SR	640	Unused variable syntax	Thomas Wouters	3.10
SR	641	Using an underscore in the version portion of Python 3.10 compatibility tags	Brett Cannon, Steve Dower, Barry Warsaw	3.10
SR	642	Explicit Pattern Syntax for Structural Pattern Matching	Alyssa Coghlan	3.10
SW	645	Allow writing optional types as x?	Maggie Moss
SR	648	Extensible customizations of the interpreter at startup	Mario Corchero	3.11
SW	650	Specifying Installer Requirements for Python Projects	Vikram Jayanthi, Dustin Ingram, Brett Cannon
SR	651	Robust Stack Overflow Handling	Mark Shannon
SR	662	Editable installs via virtual wheels	Bernát Gábor
IR	663	Standardizing Enum str(), repr(), and format() behaviors	Ethan Furman	3.11
SR	665	A file format to list Python dependencies for reproducibility of an application	Brett Cannon, Pradyun Gedam, Tzu-ping Chung
SR	666	Reject Foolish Indentation	Laura Creighton	2.2
SR	677	Callable Type Syntax	Steven Troxler, Pradeep Kumar Srinivasan	3.11
SR	690	Lazy Imports	Germán Méndez Bravo, Carl Meyer	3.12
SW	704	Require virtual environments by default for package installers	Pradyun Gedam
SR	707	A simplified signature for __exit__ and __aexit__	Irit Katriel	3.12
SR	712	Adding a “converter” parameter to dataclasses.field	Joshua Cannon	3.13
SR	713	Callable Modules	Amethyst Reese	3.12
SR	722	Dependency specification for single-file scripts	Paul Moore
SW	724	Stricter Type Guards	Rich Chiodo, Eric Traut, Erik De Bonte	3.13
SR	726	Module __setattr__ and __delattr__	Sergey B Kirpichev	3.13
SR	754	IEEE 754 Floating Point Special Values	Gregory R. Warnes	2.3
SW	756	Add PyUnicode_Export() and PyUnicode_Import() C functions	Victor Stinner	3.14
SW	759	External Wheel Hosting	Barry Warsaw, Emma Harper Smith
SW	760	No More Bare Excepts	Pablo Galindo, Brett Cannon	3.14
PR	2026	Calendar versioning for Python	Hugo van Kemenade	3.26
PW	3001	Procedure for reviewing and improving standard library modules	Georg Brandl
SR	3103	A Switch/Case Statement	Guido van Rossum	3.0
SR	3117	Postfix type declarations	Georg Brandl	3.0
SR	3122	Delineation of the main module	Brett Cannon
SR	3125	Remove Backslash Continuation	Jim J. Jewett
SR	3126	Remove Implicit String Concatenation	Jim J. Jewett, Raymond Hettinger
SR	3128	BList: A Faster List-like Type	Daniel Stutzbach	2.6, 3.0
SR	3130	Access to Current Module/Class/Function	Jim J. Jewett	3.0
SR	3133	Introducing Roles	Collin Winter	3.0
SR	3136	Labeled break and continue	Matt Chisholm	3.1
SR	3139	Cleaning out sys and the “interpreter” module	Benjamin Peterson	3.0
SR	3140	str(container) should call str(item), not repr(item)	Oleg Broytman, Jim J. Jewett
SR	3142	Add a “while” clause to generator expressions	Gerald Britton	3.0
SW	3145	Asynchronous I/O For subprocess.Popen	Eric Pruitt, Charles R. McCreary, Josiah Carlson	3.2
SW	3146	Merging Unladen Swallow into CPython	Collin Winter, Jeffrey Yasskin, Reid Kleckner	3.3
SR	3152	Cofunctions	Gregory Ewing	3.3
SS	3153	Asynchronous IO support	Laurens Van Houtven
IR	8010	The Technical Leader Governance Model	Barry Warsaw
IR	8011	Python Governance Model Lead by Trio of Pythonistas	Mariatta, Barry Warsaw
IR	8012	The Community Governance Model	Łukasz Langa
IR	8013	The External Council Governance Model	Steve Dower
IR	8014	The Commons Governance Model	Jack Jansen
IR	8015	Organization of the Python community	Victor Stinner

Reserved PEP Numbers

	PEP	Title	Authors
	801	RESERVED	Warsaw

PEP Types Key

I —Informational: Non-normative PEP containing background, guidelines or other information relevant to the Python ecosystem
P —Process: Normative PEP describing or proposing a change to a Python community process, workflow or governance
S —Standards Track: Normative PEP with a new feature for Python, implementation change for CPython or interoperability standard for the ecosystem

More info in PEP 1.

PEP Status Key

A —Accepted: Normative proposal accepted for implementation
A —Active: Currently valid informational guidance, or an in-use process
D —Deferred: Inactive draft that may be taken up again at a later time
<No letter> —Draft: Proposal under active discussion and revision
F —Final: Accepted and implementation complete, or no longer active
P —Provisional: Provisionally accepted but additional feedback needed
R —Rejected: Formally declined and will not be accepted
S —Superseded: Replaced by another succeeding PEP
W —Withdrawn: Removed from consideration by sponsor or authors

More info in PEP 1.

Authors/Owners

Name	Email Address
A.M. Kuchling	amk at amk.ca
Aahz	aahz at pythoncraft.com
Adam Turner	python at quite.org.uk
Adrian Garcia Badaracco	adrian at adriangb.com
Alex Gaynor	alex.gaynor at gmail.com
Alex Martelli	aleaxit at gmail.com
Alexander Belopolsky	alexander.belopolsky at gmail.com
Alexandre Vassalotti	alexandre at peadrop.com
Alexis Challande	alexis.challande at trailofbits.com
Alice Purcell	alicederyn at gmail.com
Alyssa Coghlan	ncoghlan at gmail.com
Amethyst Reese	amethyst at n7.gg
Ammar Askar	ammar at ammaraskar.com
Andre Roberge	andre.roberge at gmail.com
Andrew McClelland	eternalsquire at comcast.net
Andrew McNamara	andrewm at object-craft.com.au
Anthony Baxter	anthony at interlink.com.au
Antoine Pitrou	solipsis at pitrou.net
Armin Ronacher	armin.ronacher at active-4.com
Arun Babu Neelicattu	arun.neelicattu at gmail.com
Atsuo Ishimoto	ishimoto at gembook.org
Barry Warsaw	barry at python.org
Batuhan Taskaya	batuhan at python.org
Ben Finney	ben+python at benfinney.id.au
Ben Hoyt	benhoyt at gmail.com
Ben North	ben at redfrontdoor.org
Benjamin Peterson	benjamin at python.org
Benoit Bryon	benoit at marmelune.net
Berker Peksag	berker.peksag at gmail.com
Bernát Gábor	gaborjbernat at gmail.com
Björn Lindqvist	bjourne at gmail.com
Brandt Bucher	brandt at python.org
Brett Cannon	brett at python.org
Brian Quinlan	brian at sweetapp.com
C.A.M. Gerlach	cam.gerlach at gerlach.cam
Calvin Spealman	ironfroggy at gmail.com
Cameron Simpson	cs at cskk.id.au
Carl Banks	pythondev at aerojockey.com
Carl Friedrich Bolz-Tereick	cfbolz at gmx.de
Carl Meyer	carl at oddbird.net
Carol Willing	willingc at gmail.com
Charles R. McCreary
Charles-François Natali	cf.natali at gmail.com
Chris Angelico	rosuav at gmail.com
Chris Jerdonek	chris.jerdonek at gmail.com
Chris McDonough	chrism at plope.com
Christian Heimes	christian at python.org
Christian R. Reis	kiko at async.com.br
Christopher A. Craig	python-pep at ccraig.org
Christopher Barker	pythonchb at gmail.com
Clark C. Evans	cce at clarkevans.com
Cliff Wells	logiplexsoftware at earthlink.net
Collin Winter	collinwinter at google.com
Cooper Lees	me at cooperlees.com
Cory Benfield	cory at lukasa.co.uk
Damien George
Daniel F Moisset	dfmoisset at gmail.com
Daniel Holth	dholth at gmail.com
Daniel Stutzbach	daniel at stutzbachenterprises.com
Daniel Urban	urban.dani+py at gmail.com
Dave Cole	djc at object-craft.com.au
Dave Peck	davepeck at davepeck.org
David Ascher	davida at activestate.com
David Eppstein	eppstein at ics.uci.edu
David Foster	david at dafoster.net
David Goodger	goodger at python.org
David Hewitt	1939362+davidhewitt at users.noreply.github.com
David Woods	dw-git at d-woods.co.uk
Deb Nicholson	deb at python.org
Dennis Sweeney	sweeney.dennis650 at gmail.com
Dino Viehland	dinov at microsoft.com
Dirkjan Ochtman	dirkjan at ochtman.nl
Domenico Andreoli	domenico.andreoli at linux.com
Donald Stufft	donald at stufft.io
Donghee Na	donghee.na at python.org
Doug Hellmann	doug at doughellmann.com
Dustin Ingram	di at python.org
Ed Schofield	ed at pythoncharmers.com
Eddie Elizondo	eduardo.elizondorueda at gmail.com
Ee Durbin	ee at python.org
Elana Hashman	ehashman at debian.org
Eli Bendersky	eliben at gmail.com
Elvis Pranskevichus	elvis at edgedb.com
Emily Morehouse-Valcarcel	emily at python.org
Emma Harper Smith	emma at python.org
Eneg	eneg at discuss.python.org
Eric N. Vander Weele	ericvw at gmail.com
Eric Pruitt
Eric Snow	ericsnowcurrently at gmail.com
Eric Traut	erictr at microsoft.com
Eric V. Smith	eric at trueblade.com
Erik De Bonte	erikd at microsoft.com
Erik M. Bray
Erlend Egeberg Aasland	erlend at python.org
Ethan Furman	ethan at stoneleaf.us
Ewa Jodlowska	ewa at python.org
Ezio Melotti	ezio.melotti at gmail.com
Facundo Batista	facundo at taniquetil.com.ar
Facundo Tuesca	facundo.tuesca at trailofbits.com
Filipe Laíns	lains at python.org
Franek Magiera	framagie at gmail.com
Fred L. Drake, Jr.	fred at fdrake.net
Frédéric B. Giacometti	fred at arakne.com
Fridolín Pokorný	fridolin.pokorny at gmail.com
Geoffrey Thomas	geofft at ldpreload.com
Georg Brandl	georg at python.org
Gerald Britton	gerald.britton at gmail.com
Germán Méndez Bravo	german.mb at gmail.com
Gordon McMillan	gmcm at hypernet.com
Graham Bleaney	gbleaney at gmail.com
Grant Griffin	g2 at iowegian.com
Greg Slodkowicz	jergosh at gmail.com
Greg Stein	gstein at lyra.org
Greg Wilson	gvwilson at ddj.com
Gregory Ewing	greg.ewing at canterbury.ac.nz
Gregory Lielens	gregory.lielens at fft.be
Gregory P. Smith	greg at krypto.org
Gregory R. Warnes	gregory_r_warnes at groton.pfizer.com
Guido van Rossum	guido at python.org
Holger Krekel	holger at merlinux.eu
Hood Chatham	roberthoodchatham at gmail.com
Huaiyu Zhu	hzhu at users.sourceforge.net
Hugo van Kemenade
Inada Naoki	songofacandy at gmail.com
Irit Katriel	irit at python.org
Ivan Levkivskyi	levkivskyi at gmail.com
Ivona Stojanovic	stojanovic.i at hotmail.com
Jack Diederich	jackdied at gmail.com
Jack Jansen	jack at cwi.nl
James C. Ahlstrom	jim at interet.com
James Hilton-Balfe	gobot1234yt at gmail.com
James Polley	jp at jamezpolley.com
Jarek Potiuk	potiuk at apache.org
Jason Orendorff	jason.orendorff at gmail.com
Jason Petrone	jp at demonseed.net
Jeff Epler	jepler at unpythonic.net
Jeffrey Yasskin	jyasskin at google.com
Jelle Zijlstra	jelle.zijlstra at gmail.com
Jeremy Hylton	jeremy at alum.mit.edu
Jeroen Demeyer	j.demeyer at ugent.be
Jervis Whitley	jervisau at gmail.com
Jesse Noller	jnoller at gmail.com
Jim Althoff	james_althoff at i2.com
Jim Baker	jim.baker at python.org
Jim J. Jewett	jimjjewett at gmail.com
Jiwon Seo	seojiwon at gmail.com
Joanna Jablonski
Joe Carey	joe at python.org
John Belmonte	john at neggie.net
Jonathan Dekhtiar	jonathan at dekhtiar.com
Jonathan Riehl	jriehl at spaceship.com
Joop van de Pol	joop.vandepol at trailofbits.com
Joseph Jevnik	joejev at gmail.com
Joseph Martinot-Lagarde
Joshua Bambrick	jbambrick at google.com
Joshua Cannon	joshdcannon at gmail.com
Joshua Landau	joshua at landau.ws
Joshua Lock	jlock at vmware.com
Joshua Xu	jxu425 at fb.com
Josiah Carlson	jcarlson at uci.edu
Jukka Lehtosalo	jukka.lehtosalo at iki.fi
Julien Palard	julien at palard.fr
Just van Rossum	just at letterror.com
Justin Cappos	jcappos at nyu.edu
Ka-Ping Yee	ping at zesty.ca
Karl Nelson	nelson85 at llnl.gov
Karolina Surma	karolina.surma at gazeta.pl
Ken Jin	kenjin at python.org
Kerrick Staley	mail at kerrickstaley.com
Kevin Altis	altis at semi-retired.com
Kevin D. Smith	kevin.smith at themorgue.org
Klaus Zimmermann	klaus_zimmermann at gmx.de
Konstantin Kashin	kkashin at fb.com
Koos Zevenhoven	k7hoven at gmail.com
Koudai Aono	koxudaxi at gmail.com
Kushal Das	mail at kushaldas.in
Larry Hastings	larry at hastings.org
Laura Creighton	lac at strakt.com
Laurens Van Houtven	_ at lvh.cc
Laurie Opperman	laurie_opperman at hotmail.com
Lennart Regebro	regebro at gmail.com
Lie Ryan	lie.1296 at gmail.com
Lino Mastrodomenico	l.mastrodomenico at gmail.com
Lisa Roach	lisaroach14 at gmail.com
Lois Anne DeLong	lad278 at nyu.edu
Lukas Puehringer	lukas.puehringer at nyu.edu
Lysandros Nikolaou	lisandrosnik at gmail.com
Maggie Moss	maggiebmoss at gmail.com
Magnus Lie Hetland	magnus at hetland.org
Malcolm Smith	smith at chaquo.com
Marc-Andre Lemburg	mal at lemburg.com
Marc-André Lemburg	mal at lemburg.com
Marcel Plch	gmarcel.plch at gmail.com
Mariatta	mariatta at python.org
Marina Moore	mm9693 at nyu.edu
Mario Corchero	mariocj89 at gmail.com
Mark E. Haase	mehaase at gmail.com
Mark Hammond	mhammond at skippinet.com.au
Mark Mendoza	mendoza.mark.a at gmail.com
Mark Shannon	mark at hotpy.org
Mark Williams	mrw at enotuniq.org
Markus Meskanen	markusmeskanen at gmail.com
Marta Gómez Macías	cyberwitch at google.com
Martijn Faassen	faassen at infrae.com
Martin Teichmann	lkb.teichmann at gmail.com
Martin von Löwis	martin at v.loewis.de
Masayuki Yamamoto
Matt Chisholm	matt-python at theory.org
Matt Page	mpage at python.org
Matt Wozniski	godlygeek at gmail.com
Matthew Rahtz	mrahtz at google.com
Matthias Klose	doko at ubuntu.com
Micah Elliott	mde at tracos.org
Michael Foord	michael at python.org
Michael Hudson	mwh at python.net
Michael J. Sullivan	sully at msully.net
Michael Lee	michael.lee.0x2a at gmail.com
Michael P. Dubner	dubnerm at mindless.com
Michael Sarahan	msarahan at gmail.com
Michel Pelletier	michel at users.sourceforge.net
Mike G. Miller
Mike Meyer	mwm at mired.org
Mike Verdone	mike.verdone at gmail.com
Miro Hrončok	miro at hroncok.cz
Moshe Zadka	moshez at zadka.site.co.il
Nathaniel J. Smith	njs at pobox.com
Neal Norwitz	nnorwitz at gmail.com
Ned Deily	nad at python.org
Neil Hodgson	neilh at scintilla.org
Neil Schemenauer	nas at arctrix.com
Nick Humrich	nick at humrich.us
Ofek Lev	ofekmeister at gmail.com
Oleg Broytman	phd at phdru.name
Oren Tirosh	oren at hishome.net
Pablo Galindo	pablogsal at python.org
Pablo Galindo Salgado	pablogsal at python.org
Patrick Maupin	pmaupin at gmail.com
Paul Barrett	barrett at stsci.edu
Paul Colomiets	paul at colomiets.name
Paul Everitt	pauleveritt at me.com
Paul F. Dubois	paul at pfdubois.com
Paul Ganssle	paul at ganssle.io
Paul Moore	p.f.moore at gmail.com
Paul Prescod	paul at prescod.net
Peter Astrand	astrand at lysator.liu.se
Peter Harris	scav at blueyonder.co.uk
Peter Moody	pmoody at google.com
Peter Schneider-Kamp	nowonder at nowonder.de
Petr Viktorin	encukou at gmail.com
Philip House	phouse512 at gmail.com
Philipp Angerer	phil.angerer at gmail.com
Philippe Ombredanne	pombredanne at nexb.com
Philippe PRADOS	python at prados.fr
Phillip J. Eby	pje at telecommunity.com
Pradeep Kumar Srinivasan	gohanpra at gmail.com
Pradyun Gedam	pradyunsg at gmail.com
R David Murray
Ralf Gommers	ralf.gommers at gmail.com
Raymond Hettinger	python at rcn.com
Reid Kleckner	rnk at mit.edu
Rich Chiodo	rchiodo at microsoft.com
Richard Jones	richard at python.org
Richard Oudkerk	r.m.oudkerk at googlemail.com
Robert Collins	rbtcollins at hp.com
Robert Kuska	rkuska at redhat.com
Robert T. McGibbon	rmcgibbo at gmail.com
Roman Suzi	rnd at onego.ru
Ronald Oussoren	ronaldoussoren at mac.com
Russell Keith-Magee	russell at keith-magee.com
Ryan Gonzalez	rymg19 at gmail.com
Sam Gross	colesbury at gmail.com
Samuele Pedroni	pedronis at python.org
Savannah Ostrowski	savannah at python.org
Scott Gilbert	xscottg at yahoo.com
Sean Reifschneider	jafo-pep at tummy.com
Sebastian Kreft	skreft at deezer.com
Sebastián Ramírez	tiangolo at gmail.com
Sergey B Kirpichev	skirpichev at gmail.com
Serhiy Storchaka
Seth Larson	seth at python.org
Seth Michael Larson	seth at python.org
Sébastien Eustace	sebastien at eustace.io
Shannon Zhu	szhu at fb.com
Shantanu Jain	hauntsaninja at gmail.com
Simon Cross	hodgestar at gmail.com
Skip Montanaro	skip at pobox.com
Stan Ulbrych	stanulbrych at gmail.com
Stefan Behnel	stefan_ml at behnel.de
Stefan Krah	skrah at bytereef.org
Stefano Borini
Stefano Rivera	stefanor at debian.org
Stepan Koltsov	yozh at mx1.ru
Stepan Sindelar	stepan.sindelar at oracle.com
Stephen J. Turnbull	stephen at xemacs.org
Stephen Rosen	sirosen0 at gmail.com
Steve Dower	steve.dower at python.org
Steven Bethard	steven.bethard at gmail.com
Steven D’Aprano	steve at pearwood.info
Steven Taschuk	staschuk at telusplanet.net
Steven Troxler	steven.troxler at gmail.com
Stéphane Bidoul	stephane.bidoul at gmail.com
Sumana Harihareswara	sh at changeset.nyc
Tal Einat	tal at python.org
Talin	viridia at gmail.com
Taneli Hukkinen
Tarek Ziadé	tarek at ziade.org
Terence Way	terry at wayforward.net
Terry Reedy	tjreedy at udel.edu
The Python core team and community
Thomas Bellman	bellman+pep-divmod at lysator.liu.se
Thomas Heller	theller at python.net
Thomas Kluyver	thomas at kluyver.me.uk
Thomas Robitaille	thomas.robitaille at gmail.com
Thomas Wouters	thomas at python.org
Tian Gao	gaogaotiantian at hotmail.com
Till Varoquaux	till at fb.com
Tim Delaney	timothy.c.delaney at gmail.com
Tim Felgentreff	tim.felgentreff at oracle.com
Tim Peters	tim.peters at gmail.com
Tobias Kohn	kohnt at tobiaskohn.ch
Todd Rovito	rovitotv at gmail.com
Tomáš Orsava	tomas.n at orsava.cz
Tony Lownds	tony at lownds.com
Travis Oliphant	oliphant at ee.byu.edu
Trent Mick	trentm at activestate.com
Trishank Karthik Kuppusamy	karthik at trishank.com
Tzu-ping Chung	uranusjr at gmail.com
Victor Stinner	vstinner at python.org
Victorien Plot	contact at vctrn.dev
Vikram Jayanthi	vikramjayanthi at google.com
Vinay Sajip	vinay_sajip at red-dove.com
Vincent Siles	vsiles at fb.com
Vladimir Diaz	vladimir.diaz at nyu.edu
W Isaac Carroll	icarroll at pobox.com
Walter Dörwald	walter at livinglogic.de
Wenzel Jakob	wenzel.jakob at epfl.ch
William Woodruff	william at yossarian.net
Yury Selivanov	yury at edgedb.com
Zac Hatfield-Dodds	zac at zhd.dev
Zachary Ware	zach at python.org
Zixuan James Li	p359101898 at gmail.com
Łukasz Langa	lukasz at python.org

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PEP 0 – Index of Python Enhancement Proposals (PEPs)