p0017 列表

List = [1,"a",[1,"b"],(3,4),{1:2,3:4}]

print(List)
print(type(List[0]))
print(type(List[1]))
print(type(List[2]))
print(type(List[3]))
print(type(List[4]))
List.append("Jeff")
print(List)
List.insert(2,"Thomas") # 插到2位置,原来二位置向后退1
print(List)
List = List + List # 列表拼接
print(List)


if bytes is str:
    print("True")
else:
    print("False")