This is a repository for URL shortening project. The project was implemented using Python3 with Flask web framework. It is primarily designed using a dictionary as an in-memory data container to hold a named-value pair objects collection list. A couple of REST API was also implemented to support the shortening and unshortening methods. Unittest has been created for local testing. Future enhnacements to the project include unit test for the REST API, and backend datastore using a relational (MySQL) and/or NoSQL (MongoDB). The app can be invoke either directly calling the API or involking the unittest class python3 -m URLShortener.app.CustomUrlShortener python3 -m URLShortener.tests.TestCustomUrlShortener