RegEx Simplified Using Python
A Clean and Simple Guide
Regular expressions are pattern-based embedded programming language that comes pre-built in python. With the help of this language, you specify some rules for a set of matching the text you want to match. Text can be anything like emails, HTTP address, phone numbers, some special text pattern, ids, etc.
These expressions are very faster than your usual python code for pattern matching. It's a simple two-step process that it follows, at first you specify a pattern, a string to match, and what to do if the pattern is matched. Second, these expressions are compiled into a series of byte codes which are then executed by a pattern match engine that matches the pattern with the string. And later perform specified replacements.
By this brief overview, you should have understood that one of the important parts of regular expressions is patterns.
What are RegEx Patterns?
Patterns are sequences of characters that are matched inside a string. They are a combination of one or more metacharacters and Unicode characters that are passed inside an inbuilt library function.
The Four Pillars of RegEx
Regex can be defined with the help of its four pillars, that is -.
1. Meta Characters…
