How do f-strings in Python 3 affect performance?

How do f-strings in Python 3 affect performance compared to other string formatting methods?

F-strings, introduced in Python 3.6, are generally faster than the older methods like % formatting and str.format(). They are evaluated at runtime and can lead to more efficient code.

Can you provide a benchmark comparison between f-strings and other methods?

Sure! In benchmarks, f-strings can be up to 3-7 times faster than str.format() and about 2-3 times faster than % formatting, especially in loops.

Are there any downsides to using f-strings?

One downside is that f-strings require Python 3.6 or newer. Additionally, they can become less readable if overly complex expressions are included.

What about using f-strings for internationalization?

F-strings can be used for internationalization, but you need to be cautious with variable names and ensure they are properly translated.