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
1 # author:zfp 2 3 age_of_zfp=38 4 guess_age=int(input("guess age:")) 5 if guess_age==age_of_zfp: 6 print("yes,you got if.") 7 elif guess_age>age_of_zfp: 8 print("think smaller...") 9 else: 10 print("think bigger!")
1 1 #author:zfp 2 2 3 3 #import getpass 4 4 _username="zfp" 5 5 _password="abc123" 6 6 username=input("username:") 7 7 #password=getpass.getpass("password:") 8 8 #print(username,password) 9 9 password=input("password:") 10 10 11 11 if _username==username and _password==password: 12 12 print("Welcome user {name} login ...".format(name=username)) 13 13 else: 14 14 print("Invalid username or password!") 15 15 16 16 print("程序结束！")
