{"id":9962,"library":"multiprocessing","title":"multiprocessing (Python 2.4/2.5 Backport)","description":"This PyPI package `multiprocessing` (version 2.6.2.1) is a backport of the standard library `multiprocessing` module, designed specifically for Python 2.4 and 2.5. It provides process-based parallelism for these very old, end-of-life Python versions. It is not intended for use with Python 2.6+ or Python 3.x, which include `multiprocessing` in their standard libraries.","status":"abandoned","version":"2.6.2.1","language":"python","source_language":"en","source_url":"https://sourceforge.net/projects/multiprocessing/","tags":["python2","backport","concurrency","abandoned","eol"],"install":[{"cmd":"pip install multiprocessing","lang":"bash","label":"For Python 2.4/2.5 only"}],"dependencies":[],"imports":[{"note":"This import path is consistent with the standard library version but applies to the backport.","symbol":"Process","correct":"from multiprocessing import Process"}],"quickstart":{"code":"# For Python 2.4/2.5 using the multiprocessing backport\nimport multiprocessing\nimport os\n\ndef worker_function(name):\n    print \"Worker %s: PID %s\" % (name, os.getpid())\n    return\n\nif __name__ == '__main__':\n    # The 'if __name__ == '__main__':` guard is crucial, especially on Windows.\n    process = multiprocessing.Process(target=worker_function, args=('Alice',))\n    process.start()\n    process.join()\n    print \"Main process: PID %s\" % os.getpid()\n","lang":"python","description":"A basic example demonstrating how to create and run a process using the backported `multiprocessing` module. This code is written for Python 2.x syntax."},"warnings":[{"fix":"For Python 3.x, use the built-in `multiprocessing` module directly without `pip install multiprocessing`.","message":"This PyPI package is a backport for Python 2.4/2.5 and is not compatible with Python 3.x. Attempting to use it will lead to syntax errors or unexpected behavior.","severity":"breaking","affected_versions":"2.x.x.x"},{"fix":"Do not install this package on Python 2.6+ or Python 3.x. The functionality is built into the standard library.","message":"Installing `multiprocessing` via pip in Python 2.6+, 2.7, or Python 3.x environments will result in an old, incompatible version being installed. This can cause conflicts with the standard library module or lead to confusion.","severity":"gotcha","affected_versions":"2.x.x.x"},{"fix":"Upgrade to a modern, supported Python version (Python 3.x) and utilize its built-in `multiprocessing` module.","message":"This package is a backport for Python 2.4/2.5, both of which are long past their end-of-life. The package is considered abandoned and should not be used for new development. Critical security vulnerabilities or bugs will not be addressed.","severity":"deprecated","affected_versions":"2.x.x.x"}],"env_vars":null,"search_vec":"'/2.5':4 '2.4':3,25 '2.5':27 '2.6':52 '2.6.2.1':11 '3':55 'abandon':67 'backport':5,14,65 'base':32 'concurr':66 'design':21 'end':39 'end-of-lif':38 'eol':68 'includ':58 'intend':47 'librari':18,63 'life':41 'modul':20 'multiprocess':1,9,19,59 'old':37 'packag':8 'parallel':33 'process':31 'process-bas':30 'provid':29 'pypi':7 'python':2,24,42,51,54 'python2':64 'specif':22 'standard':17,62 'use':49 'version':10,43 'x':56","created_at":"2026-04-17T01:21:40.335773+00:00","updated_at":"2026-04-17T14:43:49.403689+00:00","problems":{"verify_error":"× Failed to build `multiprocessing==2.6.2.1`\n  ├─▶ The build backend returned an error\n  ╰─▶ Call to `setuptools.build_meta:__legacy__.build_wheel` failed (exit\n      status: 1)\n\n      [stderr]\n      Traceback (most recent call last):\n        File \"<string>\", line 14, in <module>\n        File\n      "},"ecosystem":"pypi","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":"2.6.2.1","cli_name":"","cli_version":null,"type":"library","homepage":"http://code.google.com/p/python-multiprocessing","github":null,"docs":null,"changelog":null,"pypi":"https://pypi.org/project/multiprocessing/","npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["data"],"base_url":null,"auth_type":null,"provenance":{"verified_status":"install_fail","verified_at":"2026-06-28","last_verified":"2026-06-28","next_check":"2026-07-05","install_tag":null}}