Backport Python Packages

backports-zstd

Backport of PEP-784 “adding Zstandard to the standard library”

monotonic

An implementation of time.monotonic() for Python 2 & Python 3

subprocess32

A backport of the Python 3 subprocess module for use on Python 2.

graphlib-backport

Backport of the Python 3.9 graphlib module to Python 3.6+ and pypy3. Amongst top 1 percent PyPI downloads.

fissix

backport of lib2to3, with enhancements

pathlib3x

backport of latest pathlib (3.10.a0) to python 3.6 and newer with a few extensions

async-exit-stack

AsyncExitStack backport for Python 3.5+

django-jsonfield-backport

Backport of the cross-DB JSONField model and form fields from Django 3.1.

singledispatchmethod

Backport of 'functools.singledispatchmethod' from Python 3.8 to Python 2.7 - 3.7.

urllib3-lts

Long-Term Support (LTS) security fork of urllib3 with backported CVE fixes for Python 3.7 and 3.8.

tstr

Various template string utilities, along with backports for older versions of Python.

backlib

Backports for the Python standard library.

f2format

Backport compiler for Python 3.6 formatted string literals (f-string).

urllib3-lts-py38

Python 3.8 LTS backport of urllib3 v2.2.3 with 5 CVE security patches (CVE-2026-21441, CVE-2025-66471, CVE-2025-66418, CVE-2025-50182, CVE-2025-50181)

urllib3-lts-py37

Python 3.7 urllib3 with CVE-2025-66471 security patches

pprint36

Backport of pprint from Python 3.9 to Python 3.6-3.8

sysaudit

Backport module for sys.audit and sys.addaudithook mechanism

bpc-utils

Utility library for the bpc backport compiler.

fastapi-backports

Helpful backports for fastapi 🔄

python-babel

The compiler for next generation Python.

subprocess32-ext

A backport of the Python 3 subprocess module for use on Python 2.

pybackport

Python package to backport classes from new python releases.

django-subquery

SubQuery support in Django < 1.11

python-poseur

Back-port compiler for Python 3.8 positional-only parameter syntax.