What are f-strings in Python 3.9?

Can you explain what f-strings are in Python 3.9?

F-strings, or formatted string literals, are a way to embed expressions inside string literals, using curly braces.

How do I use f-strings to format variables?

You can use f-strings by prefixing a string with 'f' or 'F'. For example: name = 'Alice'; f'Hello, {name}'.

Can f-strings handle expressions?

Yes, f-strings can evaluate expressions. For example: f'The sum of 2 and 3 is {2 + 3}' will output 'The sum of 2 and 3 is 5'.

Are there any limitations to using f-strings?

F-strings can only be used in Python 3.6 and later, and they cannot contain single or double quotes inside the braces.