What is the main role of serializers in data processing?

Serializers are responsible for converting data from the internal format of a program into a format suitable for storage or transmission (e.g., JSON, XML, binary format), and vice versa — deserialization.

The main roles of serializers:

• Converting objects or data structures into a byte sequence or string for saving to a file, database, or sending over a network.
• Ensuring compatibility between different systems or components that exchange data.

In Python, serializers are often used in web development (e.g., in Django REST Framework) to convert models to JSON and back, simplifying API interactions.

Example of serializing a dictionary to JSON:

import json

data = {'name': 'Alice', 'age': 30}
json_str = json.dumps(data)  # serialization

# deserialization
data_back = json.loads(json_str)