Marshmallow
Marshmallow is a Python library for object serialization and deserialization, primarily used to convert complex data types like objects into native Python data types and vice versa. It provides a simple way to validate, serialize, and deserialize data, often used in web APIs to handle JSON data. The library supports schema definitions to structure and validate data, making it popular in frameworks like Flask and Django REST Framework.
Developers should learn Marshmallow when building web APIs in Python, as it simplifies data validation and serialization for JSON responses and requests. It is particularly useful in RESTful APIs to ensure data integrity, handle nested objects, and integrate with ORMs like SQLAlchemy. Use cases include parsing user input, generating API responses, and converting database models to JSON.