Regular expressions
Regular expressions are like a small language in itself. Despite their complex and inaccessible air, they can manipulate the strings with great flexibility. They comprise a sequence of characters to define a pattern.
We will not explore all the concepts of regular expressions in this book, because it would require several chapters and divert us from the main goal of this book. Practice your regular expressions before you write your first URLs; many sites help you train on regular expressions. Search for Online regex matcher, and you will find pages to check your regular expressions through JavaScript. You can further explore regular expressions through the book, Mastering Regular Expressions Python, Packt Publishing, written ...
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