10-3 访客：
代码：
name = input("Pleas enter your name.")
name_file = open("guest.txt", 'a+')
name_file.write(name + '\n')
输入：
输出结果：
10-4访客名单：
代码：
name_file = open("guest.txt", 'a+')
while True:
name = input("Please enter your name.(q to quit)\n")
if name == 'q':
break
else:
name_file.write(name + ' had visited this program!\n')
print("Hello, ",name, " glad to see you!")
输入：
输出结果：
10-5 关于编程得调查：
代码：
filename = open("Reason.txt", 'a+')
filename.write("REASON:\n")
while True:
reason = input("Why are you fond of programing(q to quit)\n")
if reason == 'q':
break
else:
filename.write(" " + reason + '\n')
输入：
输出结果：