Uploaded September 2021 | Updated September 2026, 2 weeks ago

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When a class in your Machine Learning code knows too much about its dependencies, you have a problem. You are not adhering to the Open-Closed Principle (‘O’ in the SOLID principles).

Your code will be tightly coupled and difficult to test in isolation.

Learn about the Open-Closed Principle, how to spot its violations, and how you can refactor ML code to respect it.

By adhering to OCP, your ML code will be cleaner and more maintainable in the longer run.

Slides:
github.com/musikalkemist/solidforml/blob/main/solidforml/03%20Open%20Closed%20Principle/Open%20Closed%20Principle.pdf

Code:
github.com/musikalkemist/solidforml/blob/main/solidforml/03%20Open%20Closed%20Principle/openclosed.py

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Content:
0:00 Intro
0:21 Open-Closed Principle definition
1:20 OCP violation problems
1:57 How to spot OCP violations
2:34 Introducing the Python example
5:08 Why the example violates OCP
8:26 Solving the OCP violation
9:51 Refactoring the code
14:32 Outro