第14页 | Learning Python | 阅读 ‧ 电子书库

The Third Edition’s Python Training Changes

Besides such language changes, the third edition was augmented with new topics and examples presented in my Python training sessions. Changes included (chapter numbers again updated to reflect those in the fourth edition):

 

A new chapter introducing built-in types (Chapter 4)A new chapter introducing statement syntax (Chapter 10)A new full chapter on dynamic typing, with enhanced coverage (Chapter 6)An expanded OOP introduction (Chapter 25)New examples for files, scopes, statement nesting, classes, exceptions, and more

Many additions and changes were made with Python beginners in mind, and some topics were moved to appear at the places where they proved simplest to digest in training classes. List comprehensions and iterators, for example, now make their initial appearance in conjunction with the for loop statement, instead of later with functional tools.

Coverage of many original core language topics also was substantially expanded in the third edition, with new discussions and examples added. Because this text has become something of a de facto standard resource for learning the core Python language, the presentation was made more complete and augmented with new use cases throughout.

In addition, a new set of Python tips and tricks, gleaned from 10 years of teaching classes and 15 years of using Python for real work, was incorporated, and the exercises were updated and expanded to reflect current Python best practices, new language features, and common beginners’ mistakes witnessed firsthand in classes. Overall, the core language coverage was expanded.