cast=["Cleese",'Palin','Jones',"Idle"]
print(cast)
print(len(cast))
print(cast[1])
cast.append("Gilliam")
print(cast)
cast.pop()
print(cast)
cast.extend(["Gilliam","Chapman"])
print(cast)
cast.remove("Chapman")
print(cast)
cast.insert(0,"Chapman")
print(cast)