["python","printing","f-string"]
What is print(f"...")

I am reading through a python script that takes an input of XML files and outputs an XML file. However, I do not understand the printing syntax. Can someone please explain what f in print(f"...") does? args = parser.parser_args() print(f"Input directory: {args.input_directory}") print(f"Output directory: {args.output_directory}")
The f means Formatted string literals and it's new in Python 3.6. A formatted string literal or f-string is a string literal that is prefixed with f or F. These strings may contain replacement fields, which are expressions delimited by curly braces {}. While other string literals always have a constant value, formatted strings are really expressions evaluated at run time. Some examples of formatted string literals: >>> name = "Fred" >>> f"He said his name is {name}." "He said his name is Fred." >>> name = "Fred" >>> f"He said his name is {name!r}." "He said his name is Fred." >>> f"He said his name is {repr(name)}." # repr() is equivalent to !r "He said his name is Fred." >>> width = 10 >>> precision = 4 >>> value = decimal.Decimal("12.34567") >>> f"result: {value:{width}.{precision}}" # nested fields result: 12.35 >>> today = datetime(year=2023, month=1, day=27) >>> f"{today:%B %d, %Y}" # using date format specifier January 27, 2023 >>> number = 1024 >>> f"{number:#0x}" # using integer format specifier 0x400