Python F-Strings

Python f-strings (formatted string literals) are a string formatting mechanism introduced in Python 3.6 that allows embedding expressions inside string literals using curly braces {}. They provide a concise, readable, and efficient way to format strings by evaluating expressions at runtime and inserting their values directly into the string.

Also known as: f-strings, formatted string literals, fstrings, f string, Python 3.6 string formatting

Why learn Python F-Strings?

Developers should use f-strings for string formatting in Python 3.6+ due to their simplicity, performance, and readability compared to older methods like %-formatting or str.format(). They are ideal for logging, debugging, generating dynamic messages, and any scenario requiring variable interpolation in strings, as they reduce boilerplate code and minimize errors.

Learning Resources

• docs: Python Documentation: Formatted String Literals
• tutorial: Real Python: Python 3's f-Strings: An Improved String Formatting Syntax
• video: Python f-strings - Corey Schafer (YouTube)
• tutorial: W3Schools Python String Formatting