The Custom Iterator

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L4

Problem

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.

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