What is the difference between range and xrange functions?
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
Range return s a list while xrange return s an xrange object which take the
same memory no matter of the range size. In the first case you have all items already
generated (this can take a lot of time and memory). In Python 3 however, range is
implemented with xrange and you have to explicitly call the list function if you want to
convert it to a list.
Candidate Response Strategy & Interview Tips
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