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Python 3.4.1rc1

Release Date: May 5, 2014

Python 3.4.1 was released on May 18th, 2014.

Python 3.4.1 has over three hundred bugfixes and other improvements over 3.4.0. One notable change: the version of OpenSSL bundled with the Windows installer no longer has the "HeartBleed" vulnerability.

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

More resources


Please proceed to the download page for the download.

Notes on this release:


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 618f398f53260dd50303795bbe432906 19261231 SIG
XZ compressed source tarball Source release fba41e2d0b26b9042791eff642428b14 14105008 SIG
Mac OS X 32-bit i386/PPC installer Mac OS X for Mac OS X 10.5 and later 0d2449cdb0e6d29c86c9b31717964fb2 22831000 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later 297bae844e63c62a8d7926517eb6adf4 22899257 SIG
Windows debug information files Windows 0f87f551df1653afe4119ba75e30fbb0 36744364 SIG
Windows debug information files for 64-bit binaries Windows 525f88136ad791f665ef64298b9c8ed0 24121026 SIG
Windows help file Windows aa70bee4837e4f9d583b8abb85a7b784 7295965 SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64, not Itanium processors d4d7f15976992cc69fcfb4c7d2cf6560 25255936 SIG
Windows x86 MSI installer Windows fff0fe9cf48cbd6ef439665991650ed0 24551424 SIG