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Python 3.0.1

Python 3.0 is end-of-lifed with the release of Python 3.1. All users of Python 3.0 should upgrade to Python 3.1.

Python 3.0.1 was released on February 13, 2009. It was a bugfix release of Python 3.0.

This is the first bugfix release of Python 3.0. Python 3.0 is now in bugfix-only mode; no new features are being added. Dozens of bugs that were reported since the release of 3.0 final have been fixed.

Python 3.0 (a.k.a. "Python 3000" or "Py3k") is a new version of the language that is incompatible with the 2.x line of releases. The language is mostly the same, but many details, especially how built-in objects like dictionaries and strings work, have changed considerably, and a lot of deprecated features have finally been removed. Also, the standard library has been reorganized in a few prominent places.

Here are some Python 3.0 resources:

Please report bugs at

See also the license.

Python 3.0.1 Released: 13-Feb-2009


This is a production release; we currently support these formats:

MD5 checksums and sizes of the released files:

220b73f0a1a20c4b1cdf9f9db4cd52fe  11258272  Python-3.0.1.tgz
7291eac6a9a7a3642e309c78b8d744e5   9495088  Python-3.0.1.tar.bz2
be8f57265e1419330965692a4fa15d9a  13702656  python-3.0.1.amd64.msi
ffce874eb1a832927fb705b84720bfc6  13434880  python-3.0.1.msi
b17949fe1aa84c7b1b5c8932046c5b6f  16984391  python-3.0.1-macosx2009-02-14.dmg

The signatures for the source tarballs above were generated with GnuPG using release manager Barry Warsaw's public key which has a key id of EA5BBD71. The Windows installers were signed by Martin von Löwis' public key which has a key id of 7D9DC8D2.


[1]The binaries for AMD64 will also work on processors that implement the Intel 64 architecture (formerly EM64T), i.e. the architecture that Microsoft calls x64, and AMD called x86-64 before calling it AMD64. They will not work on Intel Itanium Processors (formerly IA-64).