Ouroboros 6

What this Python module-execution question tests

This is a medium-difficulty Python question that probes your understanding of how the Python runtime behaves when a module is executed as a script via the -m flag, versus imported normally. It rewards precision about module initialization, namespace handling, and the distinction between __main__ and module-level code.

To answer correctly, you need to trace through what happens when Python discovers and runs a package or module in this way: which code blocks execute, what names are bound in which namespaces, and whether import side effects or conditional blocks fire. The question tests whether you've internalized how Python's loader and import system interact with the execution model.

• The __main__ guard and when it evaluates to true
• Package initialization and __init__.py semantics
• Module search paths and the -m invocation protocol
• Namespace isolation between modules