At the time the first edition was published, Python was entering its second era with the release of version 2.0. Since then, the language has seen significant improvements contributing to the overall continuing success and acceptance of the language
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博文链接：https://shixm.iteye.com/blog/381884abstract
Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple
but effective approach to ohject-oriented programming. Python's elegant syntax a
