my_variable = "hello"

grades = [77, 80, 90]
tuple_grades = (77, 80, 90) # immutable
set_grades = {77, 80, 90} # unique & unordered

set_grades.add(60)
set_grades.add(60)
# print(set_grades)


########################## SET OPERATIONS #################################
your_lottery_numbers = {1, 2, 3, 4, 5}
winning_numbers = {1, 3, 5, 7, 9, 11}

# print(your_lottery_numbers.intersection(winning_numbers))
# print(your_lottery_numbers.union(winning_numbers))
# print(your_lottery_numbers.difference(winning_numbers))
