Understanding LiteralString in Python 3.11: A Deep Dive

Python 3.11 introduced LiteralString as a way to enhance type safety when dealing with string literals, particularly in security-sensitive contexts like SQL queries, shell commands, and file paths. This guide explains what it is, why it matters, and how to use it effectively. What is LiteralString? LiteralString is a type hint that indicates a function should only accept string literals (hardcoded strings), not …

Jun 20, 2025 - 14:50

Python 3.11 introduced LiteralString as a way to enhance type safety when dealing with string literals, particularly in security-sensitive contexts like SQL queries, shell commands, and file paths. This guide explains what it is, why it matters, and how to use it effectively. What is LiteralString? LiteralString is a type hint that indicates a function should only accept string literals (hardcoded strings), not …