Have you ever played with a toy that has different buttons or knobs to turn? You know how each button or knob does a specific thing, like making a noise or moving something? Well, a data descriptor is like one of those buttons or knobs.
In computer programming, a data descriptor is a special object that helps you control how data is stored and accessed. It's like a button or knob that you can assign to a specific piece of data (like a number or a word) and then use to change things about that data. For example, with a data descriptor, you could make sure that a certain piece of data can only be read (viewed) and not changed (edited), or vice versa.
Data descriptors can help make your code more efficient and reliable because they give you more control over how your data is used. Just like you might use a button or a knob on a toy to create different effects, you can use data descriptors in your programming to create different behaviors for your code.