name = input("please input your name: ")
passwd = getpass.getpass("please input your passwd: ")
if name == "alex" and passwd == "123456":
print("welcome alex")
else:
print("Wrong username or password")
age = 56
guess_age = int(input("please input age: "))
if guess_age > age:
print("try smaller...")
elif guess_age < age:
print("try bigger..")
else:
print("you got it!")
原文:http://www.cnblogs.com/oyoui/p/6626110.html