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What does the list comprehension do:?

Peer-reviewed by HireXTech Technical Panel • Updated for 2025/2026 hiring • Editorial standards
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Interviewer Expectations for this Question
01
Core Competency

Assesses fundamental understanding of Python conventions, runtime behavior, and memory/performance considerations.

02
Evaluation Criteria

Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.

Comprehensive Model Answer Verified Solution

my_list=[(x,y,z)forxinrange(1,30)foryinrange(x,30)forzin
range(y,30)ifx2+y2==z**2]
It creates a list of tuples called my_list, where the first 2 elements are the
perpendicular sides of right angle triangle and the third value 'z' is the hypotenuse.
[(3,4,5),(5,12,13),(6,8,10),(7,24,25),(8,15,17),(9,12,15),
(10,24,26),(12,16,20),(15,20,25),(20,21,29)]

Candidate Response Strategy & Interview Tips

  1. Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
  2. Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
  3. Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
  4. Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.
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