Learn Python by reading comics: interesting, informative, fun, and useful

Python is a simple yet powerful programming language that is widely used in data analysis, big data, web crawlers, automated operation and maintenance, scientific computing, and artificial intelligence. Python is also becoming more and more important. It has become a subject in the National Computer Rank Examination, and some primary and secondary schools have also opened Python programming courses. This book adheres to the concept of being interesting, informative, fun and easy to use. It simplifies complex Python technical problems through the relaxed dialogues, funny images and exaggerated actions of three cartoon characters. This book has a total of 16 chapters: Chapter 1 introduces the history and characteristics of Python and sets up the development environment. Chapters 2 to 5 introduce the basic knowledge of Python, including data types, expressions, process control, etc. Chapters 6 and 7 introduce Python's commonly used container type data and string data. Chapters 8 to 11 introduce advanced Python content, including functions, classes and objects, exception handling, and commonly used built-in modules. Chapters 2 to 16 introduce how to use Python's utility libraries, including file reading and writing, graphical user interfaces, network communications, database access, and multithreading. This book has a "hands-on" session in each chapter, where you can find application examples; and a "practice" session at the end of each chapter, where you can find synchronized exercises. If you want to get started with Python, whether you are an elementary school student who wants to learn programming, a middle school student who wants to participate in computer competitions, a college student majoring in computer-related subjects, or even a working person engaged in software development, this book is suitable for you to read and learn.

Chapter The tank is full! Ready to go!

1.1 History of Python
1.2 Features of Python
1.3 Setting up Python development environment
1.4 Want to get some help? Write and run a Hello World program
1.4.1 Interaction
1.4.2 File Mode
1.5 Practice

Chapter 2: Programming Basics
2.1 Identifiers
2.2 Keywords
2.3 Variables
2.4 Statements
2.5 Code Comments
2.6 Modules
2.7 Get started - access code elements between two modules
2.8 Practice

Chapter 3 Numerical Data
3.1 Data types in Python
3.2 Integer Types
3.3 Floating-point types
3.4 Complex Types
3.5 Boolean Type
3.6 Conversion between digital types
3.6.1 Implicit type conversion
3.6.2 Explicit Type Conversion
3.7 Practice

Chapter 4 Operators
4.1 Arithmetic operators
4.2 Comparison Operators
4.3 Logical Operators
4.4 Bitwise Operators
4.5 Assignment Operators
4.6 Operator Precedence
4.7 Practice

Chapter 5 Program Flow Control
5.1 Branch Statements
5.1.1 if structure
5.1.2 if-else structure
5.1.3 if-elif-else structure
5.2 Loop Statements
5.2.1 while statement
5.2.2 for Statement
5.3 Jump Statement
5.3.1 break Statement
5.3.2 continue Statement
5.4 Get your hands dirty - count the number of daffodils
5.5 Practice

Chapter 6 Container Types of Data
6.1 Sequence
6.1.1 Sequence Indexing Operations
6.1.2 Addition and multiplication operations
6.1.3 Slice Operation
6.1.4 Membership Test
6.2 Lists
6.2.1 Create a list
6.2.2 Appending Elements
6.2.3 Inserting Elements
6.2.4 Replacement Elements
6.2.5 Deleting Elements
6.3 Tuples
6.3.1 Creating Tuples
6.3.2 Tuple Unpacking
6.4 Collections
6.4.1 Creating a Collection
6.4.2 Modifying a Collection
6.5 Dictionary
6.5.1 Creating a dictionary
6.5.2 Modifying the dictionary
6.5.3 Accessing Dictionary Views
6.6 Get started - traversing the dictionary
6.7 Practice

Chapter 7 Strings
7.1 String Representation
7.1.1 Ordinary Strings
7.1.2 Raw Strings
7.1.3 Long Strings
7.2 Conversion between strings and numbers
7.2.1 Converting Strings to Numbers
7.2.2 Converting Numbers to Strings
7.3 Formatting Strings
7.3.1 Using placeholders
7.3.2 Format Control Characters
7.4 Manipulating Strings
7.4.1 String Search
7.4.2 String Replacement
7.4.3 String Segmentation
7.5 Get started - Count the frequency of words in English articles
7.6 Practice

Chapter 8 Functions
8.1 Defining functions
8.2 Calling a function
8.2.1 Calling functions with positional arguments
8.2.2 Calling functions with keyword arguments
8.3 Default Values ​​of Parameters
8.4 Variable Parameters
8.4.1 Tuple-based Variable Parameters (*Variable Parameters)
8.4.2 Dictionary-based variable parameters (**variable parameters)
8.5 Scope of variables in functions
8.6 Function Types
8.6.1 Understanding function types
8.6.2 Filter()
8.6.3 Mapping function map()
8.7 lambda() function
8.8 Get your hands dirty – using more lambda() functions
8.9 Practice

Chapter 9 Classes and Objects
9.1 Object-Oriented
9.2 Defining Classes
9.3 Creating Objects
9.4 Class Members
9.4.1 Instance variables
9.4.2 Construction method
9.4.3 Instance Methods
9.4.4 Class variables
9.4.5 Class Methods
9.5 Encapsulation
9.5.1 Private variables
9.5.2 Private Methods
9.5.3 Using Attributes
9.6 Inheritance
9.6.1 Inheritance in Python
9.6.2 Multiple inheritance
9.6.3 Method Overriding
9.7 Polymorphism
9.7.1 Inheritance and Polymorphism
9.7.2 Duck Typing and Polymorphism
9.8 Practice

Chapter 0 Exception Handling
10.1 Exceptions - Division by Zero
10.2 Catching Exceptions
10.2.1 try-except Statement
10.2.2 Multiple except code blocks
10.2.3 Multiple exception capture
10.2.4 Nested try-except Statements
10.3 Using finally blocks to release resources
10.4 Custom Exception Classes
10.5 Get your hands dirty - manually raise an exception
10.6 Practice

Chapter 1 Commonly used built-in modules
11.1 Mathematical calculation module - math
11.2 Date and time module - datetime
11.2.1 The datetime class
11.2.2 Date Class
11.2.3 The time class
11.2.4 Calculating time span class - timedelta
11.2.5 Converting Date and Time to and from Strings
11.3 Regular Expression Module -- re
11.3.1 String Matching
11.3.2 String Search
11.3.3 String Replacement
11.3.4 String Segmentation
11.4 Tips - How to use official documents to find module help information
11.5 Practice

Chapter 2 File Reading and Writing
12.1 Opening Files
12.2 Closing a File
12.2.1 Closing files in a finally block
12.2.2 Closing a File in a with as Block
12.3 Reading and Writing Text Files
12.4 Hands-on - Copying text files
12.5 Reading and Writing Binary Files
12.6 Getting Started - Copying Binary Files
12.7 Practice

Chapter 3 Graphical User Interface
13.1 Graphical User Interface Development Libraries in Python
13.2 Installing wxPython
13.3 wxPython Programs
13.4 Custom Window Class
13.5 Adding Controls to a Window
13.6 Event Handling
13.7 Layout Management
13.7.1 Box Layout Manager
13.7.2 Hands-on - Refactoring event handling examples
13.7.3 Hands-on - Box Layout Manager Nesting Example
13.8 Controls
13.8.1 Text Input Control
13.8.2 Checkboxes and Radio Buttons
13.8.3 Lists
13.8.4 Static Image Control
13.9 Tips and Tricks - How to use wxPython official documentation
13.10 Practice

Chapter 4 Network Communication
14.1 Basic Network Knowledge
14.1.1 TCP/IP
14.1.2 IP Address
14.1.3 Ports
14.1.4 HTTP/HTTPS
14.2 Build your own web server
14.3 The urllib.request module
14.3.1 Sending a GET request
14.3.2 Sending a POST Request
14.4 JSON Data
14.4.1 Structure of a JSON Document
14.4.2 Decoding JSON Data
14.5 Get started - downloading image examples
14.6 Move your hands - return all memo information
14.7 Practice

Chapter 5 Accessing the Database
15.1 SQLite Database
15.1.1 SQLite Data Types
15.1.2 Mapping Python Data Types to SQLite Data Types
15.1.3 Using GUI Management Tools to Manage SQLite Databases
15.2 Basic Operation Process of Database Programming
15.3 sqlite3 Module API
15.3.1 Database Connection Object
15.3.2 Cursor Object
15.4 Get started - Database CRUD operation examples
15.4.1 Data Table in Example
15.4.2 Unconditional Query
15.4.3 Conditional Query
15.4.4 Inserting Data
15.4.5 Update Data
15.4.6 Deleting Data
15.5 Tips - Preventing SQL Injection Attacks
15.6 Practice

Chapter 6 Multithreading
16.1 Thread-related knowledge
16.1.1 Process
16.1.2 Threads
16.1.3 Main Thread
16.2 Threading Module -- threading
16.3 Creating a Child Thread
16.3.1 Custom Function to Implement Thread Body
16.3.2 Customizing the thread class to implement the thread body
16.4 Thread Management
16.4.1 Waiting for a Thread to End
16.4.2 Thread Stop
16.5 Get started - downloading image examples
16.6 Practice