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Python Regular Expressions Tutorial
Regular Expressions, often shortened as regex, are a sequence of characters used to check whether a pattern exists in a given text (string) or not.
Regular Expressions in Python
Regular expressions are supported by the re module. That means that if you want to start using them in your Python scripts, you have to import this module with the help of import
Basic Patterns: Ordinary Characters
Ordinary characters are the simplest regular expressions. They match themselves exactly and do not have a special meaning in their regular expression syntax.
The match() function returns a match object if the text matches the pattern. Otherwise, it returns None. The re module also contains several other functions