.. _experts:

Experts index

This document has tables that list Python Modules, Tools, Platforms and

Interest Areas and GitHub names for each item that indicate a maintainer or

an expert in the field. This list is intended to be used by issue submitters,

issue triage people, and other issue participants to find people to @mention

or add as reviewers to issues and pull requests. People on this list may be

asked to render final judgment on a feature or bug. If no active maintainer

is listed for a given module, then questionable changes should be discussed

on the `Core Development Discourse category

<https://discuss.python.org/c/core-dev/23>`__,

while any other issues can and should be decided by any committer.

Developers can choose to follow labels, so if a label that they are

following is added to an issue or pull request, they will be notified

automatically. The :cpy-file:`.github/CODEOWNERS` file is also used to indicate

maintainers that will be automatically added as reviewers to pull requests.

Names followed by a '*' may be assigned issues involving the module or topic.

Unless a name is followed by a '*', you should never assign an issue to

that person.

The Platform and Interest Area tables list broader fields in which various

people have expertise. These people can also be contacted for help,

opinions, and decisions when issues involve their areas.

If a listed maintainer does not respond to requests for comment for an

extended period (three weeks or more), they should be marked as inactive

in this list by placing the word 'inactive' in parenthesis behind their

tracker id. They are of course free to remove that inactive mark at

any time.

Committers should update these tables as their areas of expertise widen.

New topics may be added to the Interest Area table at will.

The existence of this list is not meant to indicate that these people

*must* be contacted for decisions; it is, rather, a resource to be used

by non-committers to find responsible parties, and by committers who do

not feel qualified to make a decision in a particular context.

Stdlib

Module Maintainers

__main__ gvanrossum, ncoghlan

annotationlib JelleZijlstra*

argparse savannahostrowski*, serhiy-storchaka*

ast benjaminp, pablogsal, isidentical, JelleZijlstra, eclips4

asyncio 1st1, asvetlov, gvanrossum, graingert, kumaraditya303

bisect rhettinger*

codecs malemburg

collections rhettinger*

collections.abc rhettinger*

compileall carljm

compression.zlib Yhg1s, gpshead*, emmatyping

compression.zstd emmatyping*

concurrent.futures pitrou, gpshead*

configparser ambv*

contextlib ncoghlan, 1st1

copy serhiy-storchaka*

copyreg serhiy-storchaka*

csv serhiy-storchaka*

ctypes ZeroIntensity*

curses Yhg1s

dataclasses ericvsmith*, carljm

datetime pganssle, StanFromIreland

decimal facundobatista, rhettinger

dis 1st1

email warsaw, bitdancer*

encodings malemburg

ensurepip ncoghlan, dstufft, pradyunsg, pfmoore

enum warsaw, ethanfurman*

errno Yhg1s

faulthandler vstinner, gpshead, ZeroIntensity*

fcntl Yhg1s

fnmatch serhiy-storchaka*

ftplib giampaolo*

functools rhettinger*

gc pitrou, pablogsal, nascheme

getopt serhiy-storchaka*

getpath FFY00*

gettext tomasr8

glob serhiy-storchaka*

hashlib tiran, gpshead*, picnixz

heapq rhettinger*

hmac tiran, gpshead*, picnixz

html ezio-melotti*

idlelib terryjreedy*, taleinat

importlib brettcannon, FFY00*

inspect 1st1

io benjaminp

itertools rhettinger*

json ezio-melotti, rhettinger, serhiy-storchaka*

locale malemburg

logging vsajip

math rhettinger

mmap Yhg1s

modulefinder FFY00

multiprocessing pitrou, gpshead*

optparse serhiy-storchaka*

os.path serhiy-storchaka*

parser pablogsal

pathlib barneygale*

pdb gaogaotiantian

pickle serhiy-storchaka*

pickletools serhiy-storchaka*

pkgutil FFY00*

platform malemburg

posix larryhastings, gpshead

pty Yhg1s*

py_compile carljm

pyclbr isidentical

pydoc AA-Turner, serhiy-storchaka*

queue rhettinger*

random rhettinger

re ezio-melotti, serhiy-storchaka*

readline Yhg1s

resource Yhg1s

runpy ncoghlan, FFY00

selectors giampaolo

shutil giampaolo

signal gpshead

site FFY00*

socket gpshead

sqlite3 erlend-aasland*

ssl tiran, dstufft, alex

stat tiran

statistics rhettinger

subprocess giampaolo, gpshead*

symtable benjaminp

sysconfig FFY00*

tempfile serhiy-storchaka*

termios Yhg1s

test ezio-melotti, serhiy-storchaka*

threading pitrou, gpshead

time pganssle, StanFromIreland

tkinter serhiy-storchaka*

tomllib hauntsaninja*

traceback iritkatriel

tracemalloc vstinner

tty Yhg1s*

turtledemo terryjreedy*

types 1st1

typing gvanrossum, JelleZijlstra*, AlexWaygood*, carljm, sobolevn*

unicodedata malemburg, ezio-melotti

unittest ezio-melotti, gpshead, serhiy-storchaka*

urllib orsenthil

venv vsajip, FFY00*

weakref nascheme

xml.etree scoder

zipapp pfmoore

zipfile serhiy-storchaka, Yhg1s, gpshead

zipimport Yhg1s*

zoneinfo pganssle, StanFromIreland

Tools

Tool Maintainers

Argument Clinic larryhastings, AlexWaygood*, erlend-aasland,

serhiy-storchaka*

Deepfreeze gvanrossum, kumaraditya303

PEG Generator gvanrossum, pablogsal, lysnikolaou

.. _platform-experts:

Platforms

The **Platforms experts list** has moved to :ref:`ports`.

For official contacts for supported platforms, see :pep:`11`.

Miscellaneous

Interest area Maintainers

algorithms rhettinger*, serhiy-storchaka

argument clinic larryhastings, AlexWaygood*, erlend-aasland,

serhiy-storchaka*

AST/compiler benjaminp, 1st1, pablogsal, markshannon, isidentical, brandtbucher, carljm, iritkatriel

autoconf/makefiles Yhg1s*, emmatyping

issue tracker ezio-melotti

buildbots zware, pablogsal

bytecode benjaminp, 1st1, markshannon, brandtbucher, carljm, iritkatriel

context managers ncoghlan

core workflow Mariatta, ezio-melotti, hugovk, AA-Turner

cryptography gpshead, dstufft, picnixz

database malemburg

devguide merwok, ezio-melotti, Mariatta, hugovk,

AA-Turner, StanFromIreland

documentation ezio-melotti, merwok, JulienPalard, hugovk,

AA-Turner, AlexWaygood*, StanFromIreland

emoji Mariatta

extension modules encukou, ncoghlan, FFY00

frozen modules ericsnowcurrently, gvanrossum, kumaraditya303, FFY00

f-strings ericvsmith*

i18n malemburg, merwok, tomasr8, StanFromIreland

import machinery brettcannon, ncoghlan, ericsnowcurrently, FFY00*

initialization FFY00*

io benjaminp, gpshead

JIT brandtbucher*, savannahostrowski*

locale malemburg

mathematics malemburg, rhettinger, serhiy-storchaka

memory management tim-one, malemburg, Yhg1s, nascheme

networking gpshead

object model benjaminp, Yhg1s

packaging malemburg, merwok, dstufft, pfmoore, emmatyping, FFY00

pattern matching brandtbucher*

PEG parser gvanrossum, pablogsal, lysnikolaou

performance vstinner, serhiy-storchaka*, 1st1, rhettinger, markshannon,

brandtbucher, carljm, Fidget-Spinner, AlexWaygood*, nascheme

pip ncoghlan, dstufft, pfmoore, pradyunsg

release management malemburg, benjaminp, warsaw,

gvanrossum, merwok, ned-deily,

JulienPalard, hugovk

runtime lifecycle ericsnowcurrently, kumaraditya303, zooba, ZeroIntensity, nascheme, FFY00

str.format ericvsmith*

subinterpreters ericsnowcurrently, kumaraditya303, ZeroIntensity*

symbol table JelleZijlstra, carljm

testing ezio-melotti

threads gpshead

time and dates malemburg, pganssle, StanFromIreland

Unicode malemburg, ezio-melotti, benjaminp

version control merwok, ezio-melotti

Experts emeritus

Names followed by a '^' indicate old bugs.python.org usernames, for people

that did not transition to GitHub.

Stdlib

.. list-table::

* - Module

- Expert

* - codecs

- doerwalter

* - collections.abc

- stutzbach^

* - concurrent.futures

- brianquinlan

* - copy

- avassalotti

* - copyreg

- avassalotti

* - csv

- smontanaro

* - ctypes

- theller, abalkin, amauryfa, meadori

* - datetime

- abalkin

* - difflib

- tim-one

* - doctest

- tim-one

* - email

- maxking

* - enum

- eliben

* - heapq

- stutzbach

* - idlelib

- kbkaiser, serwy

* - io

- stutzbach^

* - ipaddress

- pmoody^

* - json

- etrepum

* - math

- stutzbach^

* - modulefinder

- theller, jvr^

* - multiprocessing

- applio, jnoller^, sbt^

* - optparse

- mitsuhiko

* - pickle

- avassalotti

* - pickletools

- avassalotti

* - pprint

- freddrake

* - selectors

- neologix^

* - shutil

- tarekziade

* - sqlite3

- ghaering^

* - ssl

- jackjansen

* - statistics

- stevendaprano

* - struct

- meadori

* - subprocess

- astrand^

* - syslog

- jafo^

* - tabnanny

- tim-one

* - tarfile

- gustaebel

* - time

- abalkin

* - tkinter

- gpolo^

* - tokenize

- meadori

* - trace

- abalkin

* - turtle

- gregorlingl^

* - unittest

- rbtcollins

* - weakref

- freddrake

* - winreg

- stutzbach^

* - wsgiref

- pjenvey

* - xml.etree

- eliben

* - zipfile

- alanmcintyre^

Platforms

.. list-table::

* - Platform

- Expert

* - AIX

- edelsohn

* - Cygwin

- jlt63^, stutzbach^

* - JVM/Java

- frank.wierzbicki^

* - OS2/EMX

- aimacintyre^

Miscellaneous

.. list-table::

* - Interest Area

- Expert

* - filesystem

- giampaolo

* - io

- stutzbach^

* - mathematics

- stutzbach^

* - networking

- giampaolo

* - packaging

- tarekziade, alexis^

* - pip

- Marcus.Smith^

* - release management

- tarekziade, anthonybaxter^, birkenfeld

* - time and dates

- abalkin

Documentation translations

Translations are within the charter of

`Editorial Board <https://python.github.io/editorial-board/>`__.

For a list of translations and their coordinators, see

:ref:`this table of translations <translation-coordinators>`.