#return values
#def my_function(x):
   # return 5*x
#print(my_function(3))
#print(my_function(5))
#print(my_function(9))
#list
#def sum_list(items):
    # sum_numbers = 0
    # for x in items:
    #    sum_numbers += x
    #return sum(items)
#print(sum_list([1,2,8,98]))

#max
# def max_of_two(x,y):
#     if x>y:
#         return x
#     return y
# def max_of_three(x,y,z):
#     return max_of_two(x,max_of_two(y,z))
# print(max_of_three(4,8,3))