![]() ![]() Regular Expression SyntaxĪ regular expression specifies a pattern that aims to match the input string. All this is made possible by the re module available in Python, which we'll look at further in some later sections. ![]() These "higher order" operations all start by first matching text with the regex string, and then the string can be manipulated (like being split) once the match is found. You can also use regexes to modify a string or to split it apart in various ways. To use regular expressions (or "regex" for short) you usually specify the rules for the set of possible strings that you want to match and then ask yourself questions such as "Does this string match the pattern?", or "Is there a match for the pattern anywhere in this string?". This "search engine" is embedded within the Python programming language (and many other languages as well) and made available through the re module. Regular expressions are basically just a sequence of characters that can be used to define a search pattern for finding text. To do this we’ll cover the different operations in Python's re module, and how to use it in your Python applications. In this tutorial we are going to learn about using regular expressions in Python, including their syntax, and how to construct them using built-in Python modules.
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