# Exercise
# The target of this exercise is to create two lists called x_list and
#  y_list, which contain 10 instances of the variables x and y, 
#  respectively.
#  You are also required to create a list called big_list, which
#   contains the variables x and y, 10 times each, by concatenating the
#    two lists you have created.
x=object()
y=object()
#TOdo:change this code
x_list=[x]*10
y_list=[y]*10
big_list=x_list+y_list
print("x_list contains %d objects"%len(x_list))
print("y_list contains %d objects"%len(y_list))
print("big_list contains %d objects"%len(big_list))
#Testing code
if x_list.count(x)==10 and y_list.count(y)==10:
    print("Almost there...")
if big_list.count(x)==10 and big_list.count(y)==10:
    print("Great!")