Time: 0:00
Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).
This bug belongs to the type errors pattern
Totals that concatenate, sorts that put 10 before 9, comparisons that refuse to run.
What went wrong: Parentheses without a trailing comma are treated as mathematical grouping syntax, not a tuple literal.
The fix: Include a trailing comma to define a single-element tuple: (val,)
Remember: In Python, the comma creates a tuple, not the parentheses.
The pattern behind it: type errors.
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<iframe src="https://trybughunt.com/embed/cc8a1a86-3a9d-4499-bbe6-74b88e501b87" title="Debugging challenge: Single element tuple without comma evaluates to integer" width="100%" height="580" loading="lazy" style="border:1px solid #d4d4d8;border-radius:12px;max-width:760px"></iframe>
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