#999_2.py

list=[0,4,2]

print(list);print(type(list));print(len(list));print(list[0]);print(list[1])

list.append(9);print(list)

list.insert(1,7);print(list)

list2=[]

list2.extend(list)

print(list2);print(list)

list3=list2+list;print(list3)

del list3[0];print(list3)

print(list3.index(0));print(list3.index(2))

for i in range(len(list3)):

    print(list3[i],end='')