3-1 姓名：
namelist = ['name_one', 'name_two', 'name_three']
for inx in namelist:
print(inx)
输出结果：
3-2 问候语：
namelist = ['name_one', 'name_two', 'name_three']
for inx in namelist:
print(inx.title() + ", I am glad to see you !")
输出结果：
3-3 自己的列表：
mylist = ['plane', 'car', 'ship']
for inx in mylist:
print("I would like to own a " + inx)
输出结果：
3-4 嘉宾名单：
guests = ['guest1', 'guest2', 'guest3', 'guest4', 'guest5', 'guest6']
for inx in guests[:4]:
print("Dear " + inx.title() + ":")
print(" I hope to enjoy the dinner with you, please come to my house before 7:30 in April 1st")
输出结果：