multiprocessing
Backport of the multiprocessing package to Python 2.4 and 2.5
Decision gist · record as of 2026-08-14
No. This package is abandoned (last release July 2009) and targets Python 2.4/2.5, which reached end-of-life over a decade ago. Modern Python includes multiprocessing in the standard library. Install only if you are maintaining a legacy system on Python 2.4 or 2.5 that cannot be upgraded; otherwise, use the built-in multiprocessing module.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 2.4 or 2.5; multiprocessing is built into Python 2.6+ and Python 3.x, making this package obsolete for modern Python versions.
- High install friction: package targets Python 2.4 and 2.5 with platform-specific binary distributions (Windows .exe, .egg files for multiple Python versions).
- Abandoned since 2009 with no maintenance activity.
License · maintenance · safety
BSD Licence (permissive) — BSD Licence (permissive) imposes no significant restrictions on use or redistribution.
last release 2009-07-30 (6224 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 122,630 downloads/mo, #11,941 on PyPI
Alternatives
Verify before relying
# For Python 2.4 or 2.5:
# pip install multiprocessing==2.6.2.1
from multiprocessing import Process
def worker():
print('Worker process')
if __name__ == '__main__':
p = Process(target=worker)
p.start()
p.join()- Whether this package still installs cleanly on Python 2.4/2.5 given the age of the codebase and platform changes since 2009.
- Compatibility with modern operating systems and their process/threading APIs relative to the 2009 codebase.
- Whether the monkey-patching of the threading module creates conflicts with other packages or modern Python internals.
What it is and what it does
This package is a backport of Python's built-in multiprocessing module to Python 2.4 and 2.5, which did not include it natively. It provides process-based parallelism, allowing developers to spawn and manage separate Python processes for concurrent execution, with support for process pools, queues, and inter-process communication. The package includes monkey patches to the threading module to ensure forward compatibility with Python 2.6 and 3.0 APIs.
The package was last updated in July 2009 and is now abandoned. Modern Python versions (2.6+, all 3.x) include multiprocessing in the standard library, making this backport obsolete for any currently-supported Python environment. It exists only as a historical artifact for legacy systems still running Python 2.4 or 2.5.
Use it for
- Running parallel workloads on legacy systems locked to Python 2.4 or 2.5 that lack built-in multiprocessing support.
- Porting older applications from Python 2.6+ down to Python 2.4/2.5 while retaining process-based concurrency.
- Maintaining compatibility with the multiprocessing API across a range of Python 2.x versions in a legacy codebase.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
This package is abandoned (last release July 2009) and targets Python 2.4/2.5, which reached end-of-life over a decade ago. Modern Python includes multiprocessing in the standard library. Install only if you are maintaining a legacy system on Python 2.4 or 2.5 that cannot be upgraded; otherwise, use the built-in multiprocessing module.
Install
multiprocessing on PyPI
Before you install
High install friction: package targets Python 2.4 and 2.5 with platform-specific binary distributions (Windows .exe, .egg files for multiple Python versions). Abandoned since 2009 with no maintenance activity.
Requires Python 2.4 or 2.5; multiprocessing is built into Python 2.6+ and Python 3.x, making this package obsolete for modern Python versions.
License in practice
BSD Licence (permissive) imposes no significant restrictions on use or redistribution.
Quickstart
# For Python 2.4 or 2.5:
# pip install multiprocessing==2.6.2.1
from multiprocessing import Process
def worker():
print('Worker process')
if __name__ == '__main__':
p = Process(target=worker)
p.start()
p.join()Verify before relying
- Whether this package still installs cleanly on Python 2.4/2.5 given the age of the codebase and platform changes since 2009.
- Compatibility with modern operating systems and their process/threading APIs relative to the 2009 codebase.
- Whether the monkey-patching of the threading module creates conflicts with other packages or modern Python internals.
Package facts
| License | BSD Licence permissive |
| Python support | Not specified |
| Install friction | High. Source build required |
| Runtime dependencies | None |
| Maintenance | Abandoned 6,224 days since the last release |
| First released | |
| Downloads | 122,630 / month, #11,941 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: BSD LicenseOperating System :: Microsoft :: WindowsOperating System :: POSIXProgramming Language :: CProgramming Language :: PythonTopic :: Software Development :: Libraries :: Python Modules |
Evidence: multiprocessing-2.6.2.1-py2.4-win32.egg; multiprocessing-2.6.2.1-py2.5-win32.egg; multiprocessing-2.6.2.1.tar.gz; multiprocessing-2.6.2.1.win32-py2.4.exe; multiprocessing-2.6.2.1.win32-py2.5.exe
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