Show the multiplication trap: create wrong = [[0] * 3] * 3, set wrong[0][0] = 1, and print wrong
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
Interview Prompt
Show the multiplication trap: create wrong = [[0] * 3] * 3, set wrong[0][0] = 1, and print wrong. Then create right = [[0] * 3 for _ in range(3)], set right[0][0] = 1, and print right.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision