Python3编程入门指南：详细教程

需积分: 1 105 浏览量更新于2024-07-18 收藏 3.93MB PDF 举报

"《Python编程教学手册》是一本全面且深入的Python编程学习指南，专为初学者设计，旨在帮助读者从零开始掌握Python 3语言。第二版由Irv Kalb编著，它以清晰、易于理解的方式，按照循序渐进的教学步骤，将编程基础与实践相结合，让学习者在轻松愉快的环境中逐渐提升技能。该书详细介绍了Python的关键概念，包括变量、数据类型、控制结构（如循环和条件语句）、函数、模块和包的使用，以及面向对象编程的基础。通过实例演示和项目实践，读者可以理论联系实际，逐步建立编程思维。此外，书中还涵盖了Python在实际工作中的应用，如网络编程、文件操作和数据处理等。值得注意的是，本书提供两种版本：纸质版的国际标准书号(ISBN-13)为978-1-4842-3878-3，电子版的ISBN-13为978-1-4842-3879-0，读者可以根据自己的需求选择。此外，该书还附有相关的数字资源链接和DOI号，便于获取最新的更新内容和在线支持。版权方面，所有内容受版权保护，未经许可，不得进行翻译、复制、重印、改编或以任何形式进行传播，包括但不限于微缩胶片、电子化、计算机软件或类似技术方法。书中可能会包含商标名称、标志和图像，这些被使用仅限于编辑目的，以体现商标所有者的权益。《Python编程教学手册》是Python新手的理想起点，适合希望系统学习并逐步精通Python语言的人群，无论你是学生、开发者还是对编程感兴趣的业余爱好者，都能从中受益匪浅。跟随作者的引导，一步步踏上Python编程的探索之旅吧！"

I. Kalb, Learn to Program with Python 3, https://doi.org/10.1007/978-1-4842-3879-0_1

CHAPTER 1

Getting Started

Congratulations! You have made a wise decision. No, not the decision to buy this book,

although I think that will turn out to be a wise decision also. I mean you have made a

wise decision to learn the basics of computer programming using the Python language.

In this book, I teach you the fundamentals of writing computer software. I assume

that you have never written any software before, so I start completely from scratch. The

only requirements are that you possess a basic knowledge of algebra and a good sense

of logic. As the book progresses, each chapter builds upon the information learned in

the previous chapter(s). The overall goal is to give you a solid introduction to the way

that computer code and data interact to form well-written programs. I introduce the

key elements of software, including variables, functions, if/else statements, loops,

lists, and strings. I offer many real-world examples that should help explain the uses of

each of these elements. I also give definitions to help you with the new vocabulary that I

introduce.

This book is not intended to be comprehensive. Rather, it is an introduction that

gives you a solid foundation in programming. The approach is highly interactive, asking

you to create small programs along the way as a chance to practice what has been

explained in each chapter. By the end of the book, you should be comfortable writing

small to medium-sized programs in Python.

This first chapter covers the following topics:

• Introducing Python

• Getting Python installed on your computer

• Using IDLE and the Python Shell

• Writing your rst program: Hello World

• Creating, saving, and running Python les

• Working with IDLE on multiple platforms

What Is Python?

Python is a general-purpose programming language. That means it was designed and

developed to write software for a wide variety of disciplines. Python has been used to

write applications to solve problems in biology, chemistry, financial analysis, numerical

analysis, robotics, and many other fields. It is also widely used as a scripting language for

use by computer administrators, who use it to capture and replay sequences of computer

commands. It is different from a language like HTML (HyperText Markup Language),

which was designed for the single purpose of allowing people to specify the layout of a

web page.

Once you learn the basic concepts of a programming language like Python, you

find that you can pick up a new computer languages very quickly. No matter what the

language (and there are many) the underlying concepts are very similar. The key things

that you learn about—variables, assignment statements, if statements, while loops,

function calls—are all concepts that are easily transferable to any other programming

language.

Installing Python

Python was created in the 1990s by Guido van Rossum. He is affectionately known as

Python’s Benevolent Dictator for Life. The language has two current versions: 2.7 and

3.6. Version 2.7 is still widely used, but its “end of life” has recently been announced.

Therefore, this version of the book will use the newer Python 3, as it is known. With

respect to the contents of this book, there are only a few differences between the versions

of the language. Where appropriate, I point out how something presented in Python 3

was handled in Python 2.

Python is maintained as an open source project by a group called the Python

Software Foundation. Because it is open source, Python is free. There is no single

company that owns and/or sells the software. You can get everything you need to write

and run all the Python programs in this book by simply downloading Python from the

Internet. I’ll explain how you can get it and install it.

The center of the Python universe is at www.python.org.

Bring up the browser of your choice and go to that address. The site changes over

time, but the essential functionality should remain the same. On the main page, there

should be a Downloads button or rollover. Once you’re in the Downloads area, you

CHAPTER 1 GETTING STARTED

should be able to select Windows, Mac, or Other Platforms (which includes Linux).

After choosing your operating system, you should get an opportunity to choose between

versions 3.x.y (whatever is the current subversion of Python 3) and version 2.x.y

(whatever is the current subversion of Python 2). Choose version 3.x.y.

Clicking the button downloads an installer file. On a Mac, the downloaded file has

a name like python-3.6.4-macosx10.6pkg. On a Windows computer, the file has a

name like python-3.6.4-msi. On either platform, find the file that was downloaded and

double-click it. That should start the installation process, which should be very simple.

IDLE andthePython Shell

There are many different software development environments (applications) that you can

use to write code in Python. It may seem odd that you use a program to write a program,

but that’s what a software development environment is. Some of these environments are

free; others can be costly. They differ in the tools they offer to help programmers be more

efficient.

The environment we will use in this book is called IDLE.You might think that IDLE

is an acronym, maybe Interactive DeveLopment Environment. When the name was

chosen, it didn’t mean anything. In fact, the name Python doesn’t refer to the snake.

Apparently, Guido van Rossum was a big fan of Monty Python’s Flying Circus, a TV

series by a well-known comedy group from Britain, and he named the language after

them. One of the founding members of Monty Python was Eric Idle. The name IDLE is a

reference to him.

IDLE is free. When you download and run the Python installer, it installs IDLE on

your computer. Once installed, you can find IDLE on a Mac by opening the applications

folder and locating the folder named Python 3.x. Once you open it, you should see the

IDLE application. To open IDLE, double-click the icon. On Windows, IDLE is installed

in the standard Program Files folder. If your version of Windows has a Start button, click

the Start button and type IDLE in the type-in field. Otherwise, you might have to do a

Control+R or Control+Q to bring up a dialog box where you can type IDLE. However you

open IDLE, you should see a window with contents that look something like this:

Python 3.6.1 (v3.6.1:69c0db5050, Mar 21 2017, 01:21:04)

[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin

Type "copyright", "credits" or "license()" for more information.

>>>

CHAPTER 1 GETTING STARTED

剩余360页未读，继续阅读

franklee1995

粉丝: 0
资源: 1

Python3编程入门指南：详细教程

Python编程全解手册：即时参考与学习指南

Python编程入门教程：Python手册详解

Python新手编程教程手册《Thinking In Python》

Python 编程手册 (CHM),python编程手册 中文pdf,Python源码.zip

python编程手册

python常用编程手册

Python编程基础入门教程 Python脚本入门学习经典手册 共67页.pdf

Python黑客编程手册：灰帽子Python探索

Python编程语言学习手册第四版

Python编程实践习题解答手册

最新资源

Python 编程手册 (CHM),python编程手册中文pdf,Python源码.zip

Python编程基础入门教程 Python脚本入门学习经典手册共67页.pdf