What are the limitations of f-strings in Python 3?

What are the limitations of f-strings in Python 3?

F-strings in Python 3 are powerful, but they have some limitations. For instance, they can't be used in certain contexts like function annotations.

Can you give me an example of where f-strings can't be used?

Sure! F-strings can't be used in the context of a lambda function or as a default argument in a function definition.

Are there any performance issues with f-strings?

F-strings are generally faster than other string formatting methods, but if you're using complex expressions, it might impact readability.

What about multi-line f-strings?

Multi-line f-strings are possible, but you need to use parentheses or triple quotes to format them correctly.

Is there a way to escape curly braces in f-strings?

Yes, you can escape curly braces in f-strings by doubling them: use {{ and }} to include literal braces in the output.