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2. Python 2.7 and Python 3.x

At this writing, both Python 2.7 and Python 3.2 are officially maintained implementations. The 3.0 release marked the first release in the development of Python that a new version was incompatible with the old one.

If you are using 2.x releases of Python, there is no hurry to convert to the 3.x series. Release 2.7 is guaranteed to be around for many years. Furthermore, there are tools to help you automate much of the conversion process. Notes throughout this document will discuss specific features of 2.7 that are intended to ease the transition.

For full documentation of the Python 3.2 version, see the online documentation.