https://wiki.sajidmahmood.me/cs-and-programming/cs50p/week7-regex/index.html Week 7: Practice Code GitHub Regular Expressions A RegEx, or Regular Expression, is a sequence of characters that forms a search pattern. — W3School RegEx can be used to check if a string contains the specified search pattern. Python has a built-in packaged called re, which can be used to word with Regular Expressions. Hugo en-us thesajid@proton.me (Sajid Mahmood) thesajid@proton.me (Sajid Mahmood)