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By the end of this article, you will learn how and why to start using f-strings today. But first, here’s what life was like before f-strings, back when you had to walk to school uphill both ways in the snow. “Old-school” String Formatting in Python Before Python 3.6, you had two main ways of embedding Python expressions inside string literals for formatting: %-formatting and str.format(). You’re about to see how to use them and what their limitations are. Option #1: %-formatting This is the OG of Python formatting and has been in the language since the very beginning. You can read mo...