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Python 3.4.3rc1

Release Date: Feb. 8, 2015

Python 3.4.3rc1

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

Python 3.4.3rc1 was released on February 8th, 2015.

Python 3.4.3rc1 has many bugfixes and other small improvements over 3.4.2.

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:

  • The OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.
  • The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".) They will not work on Intel Itanium Processors (formerly "IA-64").
  • There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release fab0f871a76682882e080ac35439c09f 19563970 SIG
XZ compressed source tarball Source release 5bac881b3dd7cf4d0b6d6b733eb2affa 14426156 SIG
Mac OS X 32-bit i386/PPC installer macOS for Mac OS X 10.5 and later 359e9caacf9350cf9eb22ae66c374acf 24738905 SIG
Mac OS X 64-bit/32-bit installer macOS for Mac OS X 10.6 and later f117f7291e17e1ee6c8685ff80a917ca 23170109 SIG
Windows debug information files Windows c659c3c88b7d8637bfcf15ad9e09c96b 36900012 SIG
Windows debug information files for 64-bit binaries Windows 5ff0c91d611796e06334c6ca375f54d8 24260290 SIG
Windows help file Windows 4b2483de7e96541150330be122f1656e 7406541 SIG
Windows x86-64 MSI installer Windows for AMD64/EM64T/x64 21146fe84fcc0b0d891f8870687f0081 25550848 SIG
Windows x86 MSI installer Windows 008e6377367e618a4f178287cf013857 24793088 SIG