



# name = input("Input your name:")
# age = input("Input your age:")
#
# print(name , age )

# import getpass
# username = input("username:")
# password = getpass.getpass("password:")
# print(username,password)
#
# if username == "alex" and password == "alex123":
#     print("Welcome alex!")
# else:
#     print("Wrong username or password!")


# age = 56
# user_guess =int(input("Input your "))
# if user_guess < age :
#     print("try smaller ...")
# elif user_guess > age :
#     print("try bigger ...")
# else:
#     print("you got it!")


# score = int(input("Input your score:")) #得分
# if score  >= 90 and score <= 100:
#     print ("A")
#     choice = input("什么奖励想要")
#     if choice == "dabaojian":
#         print("qinzhenzhuanshu")
# elif score >= 80:
#     print("B-")
# elif score >= 60:
#     print("C")
# else:
#     print("D")


# print("nihao shijie")
# name_list = ['alex','seven','eric']
# import getpass
# name = raw_input("请输入用户名:")
# pwd = getpass.getpass('请输入密码:')
# if name == "alex" and pwd =="cmd":
#     print ("huanying alex")
# else:
#     print ("username and password is wrong")

# lenth = 5
# breadth = 2
# area = lenth * breadth
# print("A rea is",area)
# print("Perim eter is",2*(lenth+breadth))

# number = 23
# guess = int(input("Enter an in teger:"))
# if guess == number:
#     print("congratulations,you guessed it")
#     print("but you do not win any prizes!")
# elif guess < number:
#     print("no it is a little highter than that")
# else:
#     print("it is little lower than that")
# print("Done")

# for i in range(1,5,2):
#     print(i)
# while True:
#     s = input("Enter somthing:")
#     if s == "quit":
#         break
#     print("Lenght of the string is",len(s))
# print("done")