The Custom Iterator
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
- Seniority
- L4
Interview Prompt
Implement a Range class accepting (start, stop, step=1). Support __iter__ and __next__. The test harness constructs Range(*args) then calls 'iterate' which collects list(iter(range_instance)). Return None for constructor calls and the collected list for 'iterate' calls.
Summary
Some sequences follow their own rules.
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