Assignment 17066

Upload a Jupyter notebook in which you do the following:
Explain what a regular expression is.
Write a regular expression that contains at least one capturing group, at least one quantifier, and at least one character class (w, d, s, etc.).
Explain your regular expression.
Use the function to apply your regular expression to a string.
Use the match object to retrieve the substring that matches the capturing group in your regular expression.