Description: The reusability principle in programming emphasizes the importance of writing code that can be reused in different contexts. This principle aims to reduce redundancy and improve efficiency in software development, allowing developers to create components that can be used across multiple applications or projects. Code reuse not only saves time and effort but also contributes to the maintainability and scalability of software. By following this principle, programmers can build libraries and frameworks that encapsulate common functionalities, making it easier to integrate them into various applications. This principle manifests through the creation of modules, functions, and packages that can be easily imported and used in different projects. Reuse also fosters collaboration among developers, as it allows for sharing and improving existing code, promoting a more agile and efficient approach to software development. In summary, the reusability principle is fundamental for optimizing the programming process, improving software quality, and facilitating collaboration in development teams.