The Chunked Reader

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

Domain

Python

Difficulty

medium

Seniority

L3

Problem

Given a list of lines and a positive chunk_size, return a list of successive chunks, each a list of at most chunk_size lines, in order. The last chunk may be smaller than chunk_size if the elements run out. For lines=['a','b','c','d','e'] and chunk_size=2, return [['a','b'],['c','d'],['e']]. An empty input returns an empty list. Build the chunks lazily with a generator for memory efficiency, then materialize them into the returned list of lists.

Summary

Too big for memory. Read in pieces.

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