A command-line interface (CLI) is a text-based interface that allows users to interact with applications or operating systems by entering commands into a terminal or command prompt. Click, a Python package, streamlines the process of constructing robust and user-friendly command-line interfaces. It empowers developers to create CLI applications with intuitive user interfaces, enhancing the user experience and simplifying software interaction. Click provides various features such as simplicity and readability, customization options, wide adoption, and extensive documentation. By utilizing Click, developers can simplify the process of creating CLIs, making it accessible to users of all skill levels.