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The primary goal of this book is to provide information and skills that are necessary to be a core Python developer. The book begins with basics and goes beyond basics. After reading this book, you’ll be able todevelop cool Python applications. Over the 20 chapters in this book, you will learn the following: Chapter 1 introduces the installation of Python and shows how to write and execute the first program. This chapter gives the knowledge of basic syntax such astriple quotes, escape sequence, and formatted output. Chapter 2 discusses the different types of operators offered by Python. Chapter 3 elaborates on the control statement, uses of the for and while loop, and then how to control aloop with the help of break and continue statements. Chapter 4 discusses the string,the first data structure of Python, features ofstring, string methods and the functions can be applied on the string. Chapter 5 gives you the knowledge of two main containers of Python: list and tuple. This chapter mentions the function and method of list and tuple in a stepby- step manner. Chapter 6 describes another important data structure dictionary. The dictionary contains its own index of values; the index is called as key. The chapter also gives you the details of the dictionary’s methods. Chapter 7 talks about the creation and execution of a function and the removal of aredundancy using the function. The chapter then focuses on the local and global variables. Chapter 8 focuses on organizing the code and creation of modules and packages. Chapter 9 teaches how to handle an error and make our own customize exceptions. Chapter 10 describes the reading and writing of a file. The chapter also mention the pickle and JSON files. Chapter 11 describes a special type of contain called collections which offers counter, named tuple, defaultdict, ordereddict, and deque. Chapter 12 teaches how to create a random number with the help of random modules. The chapter also describes some built-in functions such as filter, map, and reduce, which gives greater flexibility to create code. Chapter 13 introduces the time-related activities and explains how to generate time of different time zones. Chapter 14 describes the regular expression, which helps to find the desired pattern from the text. Chapter 15 mentions the os modules that help in running the OS command and howthe os modules help in creating a directory and checking access of a file. Chapter 16 gives you a detailed description of class and object. This chapter will teach you about instance variable, class variable, method, class method, static method, and so on. Chapter 17 focuses on parallel programming with the help of threads. The threading module has been used to create the threads. Chapter 18 describes the significance of queue and types of queue and how a queue can help to communicate two threads. Chapter 19 mentions the real parallel programming through multiprocessing. The chapter also focuses on the subprocess that could replace the os module. Chapter 20 describes the modules such as argparse, logging, config parser, and PDB, which helps creating and debugging the code efficiently.