Pydantic is a Python library that allows you to create robust, type-safe models with built-in validation. It’s a game-changer for anyone working with data models, APIs, or web applications. But why do we need validation in the first place? Well, without validation, our models can become a mess of incorrect data, leading to errors, crashes, and headaches. Validation helps ensure that our data is correct, consistent, and reliable.
An Enum, or enumeration, is a set of named values that can be used to define a specific set of choices. In the context of Pydantic, Enums can be used to define a set of allowed values for a particular field. For example, if we have a field called “color” that can only be one of three values – “red”, “green”, or “blue” – we can use an Enum to define these values and ensure that only those values are accepted.