条件语句的学习

这里是if...else...选择判断语句。

今天学到一个小知识点，在字符串的后面加.format方法。

if...elif...else

# author:zfp

age_of_zfp=38
guess_age=int(input("guess age:"))
if guess_age==age_of_zfp:
    print("yes,you got if.")
elif guess_age>age_of_zfp:
    print("think smaller...")
else:
    print("think bigger!")

 1 #author:zfp
 2 
 3 #import getpass
 4 _username="zfp"
 5 _password="abc123"
 6 username=input("username:")
 7 #password=getpass.getpass("password:")
 8 #print(username,password)
 9 password=input("password:")
10 
11 if _username==username and _password==password:
12     print("Welcome user {name} login ...".format(name=username))
13 else:
14     print("Invalid username or password!")
15 
16 print("程序结束！")