from numModule import Number_set

a = Number_set()  # create an object of class Number_set
b = Number_set()  # create another object of class Number_set
print(b.get_avg())
a.add(10)         # object "a", executes its "add" function       
a.add(100)        # object "a", executes its "add" function
b.add(-56)        # object "b", executes its "add" function
b.add(-4)         # object "b", executes its "add" function
print("a max", a.get_max())
print("a average", a.get_avg())
print("b max", b.get_max())

##########################################################
#         add here this call                             #
#                                                        #
# var = b.get_variance()                                 #
# print("b's variance is", var)                          #
#                                                        #
# and modify the Number_set class definition accordingly #
##########################################################