in question three why should I add 'f' ' in the last print ?

Hey Alejandro, Thank you for the example! These are the so-called f-strings. Typing an f in front of a string allows you to enter values of variables inside that string by enclosing the variables in curly braces. In your code, try and change the last line from print(f'There are {count} people in the class, they are {class_names}') to print('There are {count} people in the class, they are {class_names}') Notice the change? Without the f in front, {count} and {class_names} are just strings. With the f, their values are displayed instead. Hope this helps! Kind regards, 365 Hristina

Hey Alejandro, Thank you for your question! Could you please share the name of the file you are reading the exercise from? Kind regards, 365 Hristina

i think that i undestand the use of the 'f' but y want the technical answer. in this case for example: count = 0 class_names = [] name = input('Please enter name type n to stop:> ') while name != 'n': #Cuando se digite n el ciclo para de guardar nombres count +=1 class_names.append(name) print(f'{name} has been added.') name = input('Next name?:> ') print(**f'**There are {count} people in the class, they are {class_names}' ) thak'u very much