# Regular Expressions

A regular expression is a sequence of characters that specifies a search pattern in text. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings, or for input validation.

Visit the following resources to learn more:

- [@official@Regular Expressions in Python](https://docs.python.org/3/library/re.html)
- [@article@Python Regular Expressions](https://developers.google.com/edu/python/regular-expressions)
- [@article@Python - Regular Expressions](https://www.tutorialspoint.com/python/python_reg_expressions.htm)