The first Python primer for Programming Little white notes

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ebook Marquis

First Chapter: why python?

What can 1.1 python do?

1. Easy to get started

2. Powerful Features

3. A lot of things to do: Web site backend programmers, automated operations, data analysts, game developers, automated testing;

The development of the website; the process of handling large amounts of information by crawling and fetching the goods; smart hardware

Chapter Ii: Start now

2.1 Installing the Python environment (slightly)

2.2 Using the IDE tool (slightly)

Chapter Iii: Variables and strings

3.1 Start learning Programming (slightly)

3.2 Variables

1. Python is case sensitive, which means “a” that “A” it will be two different variables instead of the Same.

2. Assign a value to a variable in the Format:

3.3 Print () 1. Print () function: printing function

2. example:

file = open(‘/Users/yourname/Desktop/file.txt‘,‘w‘)

file.write(‘hello world!‘) 

//这段代码打开了桌面上的 file.txt 文件，并写入了 Hello World！w 代表着如果桌面上有 file.txt 这个文件就直接写入 hello world ,如果没有   file.txt 这个文件就创建一个这样的文件。

3. To view the file path, the Windows user opens a file on the desktop with the Explorer to view the Path. The MAC user opens the terminal terminal and then drags a file on the desktop to view the Path.

3.4 String

1. What is a string? The data type that encloses the character with a pair of single quotation marks/double quotation marks/three quotation marks.

2. Basic use of strings

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The first Python primer for Programming Little white notes