l=[123,'Hello',23.45]
print(l)
print(len(l))
print(l[:2])
print(l[1])
l=l+[4,5,6]
print(l)
print(l*2)
l.append('n1')
print(l)
l.pop(2)
print(l)
m=["cc","bb","aa","jj"]
m.sort()
print(m)
m.reverse()
print(m)
