#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='')
