Python's f-string provides a readable way to interpolate and format strings. They're readable, concise, and less prone to error than traditional string interpolation and formatting tools, such as the .format() method and the modulo operator (%). F-strings are also faster than those tools!

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Real Python

F-strings are a tool for string interpolation and formatting in Python. They provide a concise and readable syntax for interpolating values, objects, and expressions into string literals at runtime. F-strings are more concise and readable than the % operator and the .format() method, and they are also faster. F-strings also have the = specifier for debugging purposes.

Python's F-String for String Interpolation and Formatting – Real Python

Interpolating and Formatting Strings Before Python 3.6

Doing String Interpolation With F-Strings in Python

Formatting Strings With Python’s F-String

Upgrading F-Strings: Python 3.12 and Beyond

Using Traditional String Formatting Tools Over F-Strings

Converting Old String Into F-Strings Automatically