Explain differences between Python list and tuple

Read the full interview experience this question came from →

Quick Overview

Evaluates understanding of Python data structures—specifically lists versus tuples—by probing concepts such as mutability and its implications, high-level performance and memory trade-offs, typical use cases, and hashability for use as dictionary keys.

Explain differences between Python list and tuple

Company: PayPal

Role: Data Scientist

Category: Coding & Algorithms

Difficulty: hard

Interview Round: Technical Screen

In Python, what are the key differences between a `list` and a `tuple`? Cover: - Mutability and implications - Performance and memory considerations (high level) - Typical use cases - Hashability and when tuples can be dictionary keys - One short code example illustrating an important difference

Overview: Evaluates understanding of Python data structures—specifically lists versus tuples—by probing concepts such as mutability and its implications, high-level performance and memory trade-offs, typical use cases, and hashability for use as dictionary keys.

Read the full PayPal Data Scientist interview experience this question came from

PayPal logo
PayPal
Jan 2, 2026
hardData ScientistTechnical ScreenCoding & Algorithms
5
0

In Python, what are the key differences between a list and a tuple?

Cover:

  • Mutability and implications
  • Performance and memory considerations (high level)
  • Typical use cases
  • Hashability and when tuples can be dictionary keys
  • One short code example illustrating an important difference