Time: 0:00
Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).
This bug belongs to the mutation and copying bugs pattern
Assignment does not copy, a shallow copy still shares its contents, and mutating methods return None.
What went wrong: print() shows text on screen. It does not give a value back, so the function returns None.
The fix: return "Hello, " + name + "!"
Remember: print() is for people to read. return is for the code that called you.
The pattern behind it: mutation and copying bugs.
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<iframe src="https://trybughunt.com/embed/30650346-cc38-4688-ac79-a07b389c6cb4" title="Debugging challenge: Greeting prints but the page shows nothing" width="100%" height="580" loading="lazy" style="border:1px solid #d4d4d8;border-radius:12px;max-width:760px"></iframe>
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