Use defaultdict(set) to track unique visitors per page: ('home', 'alice'), ('about', 'bob'), ('home'

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

Domain

Python

Difficulty

medium

Problem

Use defaultdict(set) to track unique visitors per page: ('home', 'alice'), ('about', 'bob'), ('home', 'bob'), ('home', 'alice'), ('about', 'alice'). Print each page and its sorted visitor count.

Practice This Problem

Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.