# A variable called filename holds "photo.png"

Canonical URL: <https://datadriven.io/problems/a-variable-called-filename-holds-photopng-use-negative-s-a6341637>

Domain: Python · Difficulty: medium

## Problem

A variable called filename holds "photo.png". Use negative slicing to extract the extension (last 3 characters) and print it. Then extract the name without the extension (everything except the last 4 characters) and print it.

## Related

- [All practice problems](https://datadriven.io/problems)
- [Mock interview mode](https://datadriven.io/interview/a-variable-called-filename-holds-photopng-use-negative-s-a6341637)
- [Python Interview Questions](https://datadriven.io/python-interview-questions)
- [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep)
- [Daily Challenge](https://datadriven.io/daily)

---

Source: DataDriven (https://datadriven.io). 100% free data engineering interview prep. Live code execution against Postgres 16, Python 3.11, and Spark sandboxes. No paywall, no premium tier, no signup gate.