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Python 3.4.2rc1

Release Date: Sept. 22, 2014

Python 3.4.2rc1

Python 3.4 has reached end-of-life. Python 3.4.10, the final release of the 3.4 series, is available here.

Python 3.4.2rc1 was released on September 22nd, 2014.

Python 3.4.2 has many bugfixes and other small improvements over 3.4.1. One new feature for Mac OS X users: the OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.

Major new features of the 3.4 series, compared to 3.3

Python 3.4 includes a range of improvements of the 3.x series, including hundreds of small improvements and bug fixes. Among the new major new features and changes in the 3.4 release series are

  • PEP 428, a "pathlib" module providing object-oriented filesystem paths
  • PEP 435, a standardized "enum" module
  • PEP 436, a build enhancement that will help generate introspection information for builtins
  • PEP 442, improved semantics for object finalization
  • PEP 443, adding single-dispatch generic functions to the standard library
  • PEP 445, a new C API for implementing custom memory allocators
  • PEP 446, changing file descriptors to not be inherited by default in subprocesses
  • PEP 450, a new "statistics" module
  • PEP 451, standardizing module metadata for Python's module import system
  • PEP 453, a bundled installer for the pip package manager
  • PEP 454, a new "tracemalloc" module for tracing Python memory allocations
  • PEP 456, a new hash algorithm for Python strings and binary data
  • PEP 3154, a new and improved protocol for pickled objects
  • PEP 3156, a new "asyncio" module, a new framework for asynchronous I/O


Notes on this release:

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 95069fceb3c1190a576b8c4f41702a01 19281545 SIG
XZ compressed source tarball Source release e5ca23606ee57b93dfc6c8d09d95cdbf 14174672 SIG
Mac OS X 32-bit i386/PPC installer macOS for Mac OS X 10.5 and later d86a6dc6c93ed3f9c8a9dfd039eb684a 22762516 SIG
Mac OS X 64-bit/32-bit installer macOS for Mac OS X 10.6 and later ac30c9bc1d11014baf06543006e27cfd 22853559 SIG
Windows debug information files Windows a2b74edf76aff050cbda6aba68a9e6f3 36785324 SIG
Windows debug information files for 64-bit binaries Windows ce96b08e03826acae67a1a03e942174c 24104642 SIG
Windows help file Windows 42084873a6556ee3a66c97d21a61ab04 7360915 SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64 0fed82bc18feda23f71ee1d16b641751 25235456 SIG
Windows x86 MSI installer Windows 9c52cd40cb5ec8eb887822dce9824ddc 24530944 SIG