Exercise: Build a Greeting With F-Strings

Hello, this is Guy, I seem to be stuck on how to input a function with an f-string. I’m not sure what I did wrong:

name = 'Eric'
age = 74
build_greetingF"Hello, {name}, You are {age}."

Help, thanks.

Hi @Guy I. Horn, the main thing is that the f prefix belongs to the string, not to the function name. Right now build_greetingF"..." puts the F at the end of the name, so Python sees a name followed by a string and raises a SyntaxError.

Using a capital F is fine, by the way (the lesson mentions that at 0:54). It just needs to sit right before the opening quote.

The exercise also asks you to write a function, so you need def and a return:

def build_greeting(name, age):
    return f"Hello, {name}. You are {age}."

Since name and age come in as parameters, you don’t need to assign them at the top. You pass them in when you call the function:

>>> build_greeting("Eric", 74)
'Hello, Eric. You are 74.'

One small detail to match the expected output: there’s a period after the name, not a comma. So Hello, {name}. You are {age}.

The Simple Syntax of F-Strings lesson walks through the prefix and curly brace syntax if you want a quick refresher 🙂