Abstraction, Memory Leaks, Polymorphism | Dataford Interview Questions

Abstraction, memory leaks, polymorphism

Implement an extensible Python design for processing heterogeneous resources. Define an abstract Resource interface, provide polymorphic text and image implementations, and use a manager that does not retain processed resources after the function returns. The function must return each rendered resource and the number of resources still retained by the manager.

Function: render_resources(records)

Each record is a dictionary with kind equal to "text" or "image", and a string value. Return (rendered, live_count), where rendered is a list of strings and live_count is the manager's retained-resource count after processing.

Constraints

0 <= len(records) <= 100
Each record contains a valid kind, either "text" or "image"
Each value is a string
The manager must not retain processed resource objects

Function Signature

def render_resources(records):

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