how to sort a list by the second element in tuple python

# lists_of_tuples = [('item', 'price'), ('item', 'price'), ('item', 'price')]
def sort_prices(list_of_tuples): #sort the list b*y the price of each tuple
    list_of_tuples.sort(key=lambda x: x[1], reverse=True) #earse the "reverse" part to sort in small to big.
    return list_of_tuples, print(list_of_tuples)