Python 3.4.0 Release Candidate 1 Release
Python 3.4.0 release candidate 1
Note: Python 3.4.0rc1 has been superseded by Python 3.4.9.
Python 3.4.0 release candidate 1 was released on February 10th, 2014. This is a preview release of the next major release of Python, Python 3.4, and is not suitable for production environments.
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
Download
This is a preview release, and its use is not recommended in production settings.
We currently support these formats for download:
- XZ compressed source tar ball (3.4.0rc1) (sig), ~ 14 MB
- Gzipped source tar ball (3.4.0rc1) (sig), ~ 19 MB
- Windows x86 MSI Installer (3.4.0rc1) (sig) and Visual Studio debug information files (sig)
- Windows X86-64 MSI Installer (3.4.0rc1) [1] (sig) and Visual Studio debug information files (sig)
- Mac OS X 64-bit/32-bit Installer (3.4.0rc1) for Mac OS X 10.6 and later [2] (sig). [You may need an updated Tcl/Tk install to run IDLE or use Tkinter, see note 2 for instructions.]
- Mac OS X 32-bit i386/PPC Installer (3.4.0rc1) for Mac OS X 10.5 and later [2] (sig)
The source tarballs are signed with Larry Hastings' key, which has a key id of F73C700D; the fingerprint is 97FC 712E 4C02 4BBE A48A 61ED 3A5C A953 F73C 700D. The Windows installer was signed by Martin von Löwis' public key, which has a key id of 7D9DC8D2. The Mac installers were signed with Ned Deily's key, which has a key id of 6F5E1540. The public keys are located on the download page.
MD5 checksums and sizes of the released files:
8f75b4e8e907bc17d9e4478da1bd0f0f 18952448 Python-3.4.0rc1.tgz 476cef37f9f51bed6af6d07914f110ea 14047816 Python-3.4.0rc1.tar.xz 6d4354cb20c2a145e23c59e72743d570 22720129 python-3.4.0rc1-macosx10.5.dmg 189a88cd69af74b596f0d7b195210f3c 22786279 python-3.4.0rc1-macosx10.6.dmg 96c158352c4568aec2a0bbda36bd7b9b 24424448 python-3.4.0rc1.msi 362d322e289b2a531a9ecc40735a759d 36646060 python-3.4.0rc1-pdb.zip 5fc3c7360070c02193554fe4c32dc3f6 25124864 python-3.4.0rc1.amd64.msi 163ba092111baec42564b2bd86aa4443 24121026 python-3.4.0rc1.amd64-pdb.zip
| [1] | 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"). |
| [2] | (1, 2) There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here. |