Python is an object-oriented programming. Its important philosophy is summarized by PEP 20. Like
◎ Beautiful is better than ugly.
◎ Explicit is better than implicit.
◎ Simple is better than complex.
◎ Complex is better than complicated.
◎ And so on....
The most important philosophy is "simple". So
◎ Keep it simple.
When you write a Python program, the only thing you should keep in mind is the above sentence. But what is the meaning of "simple"? It is a good question, right? Simply speaking, the simple is a style and a thinking. That is to say, you should uses a direct, obvious and effective way to design a software using Python in any case.
This e-book will take you to learn programming with Python. Just like the cover's image, I want to take you to go up the stairs step by step and you also learn programming with Python by this way, step by step. I think you should slow down and experience what you should know about programming.
There are three parts of this e-book.
◎ Part One - Basics
◎ Part Two - Software Development
◎ Part Three - GUI
Part One brings together all the basic skills about Python you need to know. Part Two introduces the basic knowledge about software development. Part Three designs a graphical user interface using Tk of the standard library.
The purpose of this e-book is an introduction about programming with Python. You may need two or three months to study this e-book.
The main reference of this e-book are the following web pages and books.
◎ Index of Python Enhancement Proposals
◎ The Python 2 Tutorial
◎ The Python 3.4 Tutorial
◎ Beginning Python: From Novice to Professional
◎ How to Think Like a Computer Scientist: Learning with Python, 2nd Edition (Using Python 2.x)
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*** Update Information ****
In addition to change the cover of the e-book, I have also revised grammar and spelling errors of the e-book.