Guido van rosum, author of The Python language, describes the evolution of Python 3

O'reilly interviewed Guido van rosum, author of The Python language, and discussed Python 3 and its future development.

In the end, he said: I want to reiterate that the decision to use 3.0 or 2.6 is a personal choice. You are not at risk of being left behind by taking a conservative stance. Both 3.0 and 2.6 are supported by the same core Python developer group. At this time, we do not particularly emphasize the importance and quality of Python 3. If you are not subject to external requirements, or the third-party software has not been migrated to 3.0, or you work in an environment where others are other versions, you will not be blocked. If you are learning python for the first time, 3.0 is an easy-to-use language. Some things that plague beginners have been removed. If you study 3.0 and check other versions, you can easily understand the differences between 2.6 and 3.0. If you study Python 2.6, you may be blocked by outdated syntaxes.