We’ve long used f-strings in Python to conveniently format variables in a string. Python 3.14 introduces an even more advanced feature in this vein, template strings as defined in PEP 750.

Python 3.14 has a new feature called the template string, or t-string, type. A t-string superficially resembles an f-string, but it’s designed to do something very different.

This change can make it easier for developers to write and read code that uses F strings. Python 3.12 also brings changes related to types and type annotations.