A raw string is having prefix 'r' or 'R' to the normal string literal.> normal="computer" > print (normal) computer > raw=r"computer" > print (raw) computerBoth strings appear similar. Python's standard library has 're' module for this purpose.The most common applications of regular expressions are:Search for a pattern in a stringFinding a pattern stringBreak string into a sub stringsReplace part of a stringRaw stringsMethods in re module use raw strings as the pattern argument. Many programming languages including Python provide regex capabilities, built-in or via libraries. One is the POSIX standard and another, widely used, is the Perl syntax.Manipulation of textual data plays important role in data science projects that require large scale text processing. It is a technique that developed in theoretical computer science and formal language theory.Different syntaxes are used for writing regular expressions. Regular expressions are used in search algorithms, search and replace dialogs of text editors, and in lexical analysis. Python Tutorial By KnowledgeHut A regular expression also known as regex is a sequence of characters that defines a search pattern.
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