About print statement

Course Name: Python Practice Exercises, Section No: 9, Unit No: 4, Unit type: Exercise

i don't understand what is the role of 'f' in print statement

i tried print('stock price of' ,stocks.keys(), 'is',stocks.values())

and print('stock price of {keys} is {values}')

but it is not showing expected output without f

what is the use of f doing here?

check out on f-string here.