Overview

This book consists of two parts. In the first part of the book, you will learn how to download and install Python on your Windows or Linux system. You will learn what a variable is, how to perform arithmetic operations, if statement, for loops, how to capture user input, and much more. In the second part of the book we will cover the process of creating a web crawler in Python. A web crawler is a program that browses the World Wide Web in a methodical fashion for the purpose of collecting information. After you finish this book, you should have a working web crawler that you can use on your own website. Here is a list of topics covered in the book: Part 1 - Python basics Chapter 1 - Introduction - we go through the basics of Python. You will learn how to download and install Python on Windows and Linux, and all the ways you can run Python code. Chapter 2 - Basic programs - you will learn how to write your first program. We will describe variables and their data types and explain what strings are. Chapter 3 - Operators overview - we describe different types of operators found in Python: arithmetic, comparison, logical, assignment, membership, and identity operators. Chapter 4 - Conditional statements - we describe conditional statements. You will learn how to get user input and use logical operators in your programs. Chapter 5 - Loops - we show you what loops are. You will also learn how to use break, continue, and pass statements. Chapter 6 - Errors - you will learn how to deal with errors in your code. You will learn different types of errors, and how you can catch specific exceptions. Chapter 7 - Modules - you will learn what modules are and how you can use them in your programs. You will also learn how to find files on your disk. Chapter 8 - Strings - we will describe what strings are. You will also learn some useful string functions and how to escape characters in Python. Part 2 - Creating a web crawler - we will describe how you can create a fully functional web crawler. To speed up the crawling process, our web crawler will be developed as a multi-threaded program.

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9781533272492

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