This code defines a class TareasPendientes which is a simple task management system. It allows users to add, mark as completed, display, and delete tasks. Here's a breakdown of its functionality:

• Initialization (__init__ method): Initializes an empty list to store tasks.
• Add Task (agregar_tarea method): Adds a new task to the list, with a default status of not completed.
• Mark Task as Completed (marcar_completada method): Changes the status of a specified task to completed.
• Display Tasks (mostrar_tareas method): Prints all tasks with their current status (completed or pending).
• Delete Task (eliminar_tarea method): Removes a specified task from the list.

The main function provides a command-line interface to interact with the TareasPendientes class, offering options to add, complete, display, and delete tasks, as well as to exit the program. This setup allows users to manage their tasks through a simple text-based menu.