python3--Decorator Advanced Learning Edition

__author__ = "Aaron Fan"
Import Time #导入time模块
user,passwd = ' Alex ', ' abc123 ' #用户名密码
def auth (auth_type): #创建auth函数, creating Auth_type parameters
#print ("auth func:", Auth_type) #打印形参auth_type的值
def outer_wrapper (func): #创建outer_wrapper函数, creating a func parameter
def wrapper (*args, **kwargs): #创建wrapper函数, creating non-fixed parameters *args,**kwargs
#print ("wrapper func args:", *args, **kwargs) #打印传进来的这些非固定参数的值
if Auth_type = = "Local": #如果auth函数中的形参auth_type的值等于local
Username = input ("username:"). Strip () #输入用户名
Password = input ("Password:"). Strip () #输入密码
If user = = Username and passwd = = Password: #如果用户名和密码全部正确
Print ("\033[32;1muser has passed authentication\033[0m") #以绿色的颜色打印一句登陆成功的提示语



res = func (*args, **kwargs) # from Home #这里主要是为了显示home () function return value: From home
Print ("---after Authenticaion") #打印一句话
return res #返回定义的res变量的值


else: #否则账号或者密码错误
Exit ("\033[31;1minvalid username or password\033[0m")
elif Auth_type = = "LDAP": #如果auth函数中的形参auth_type的值等于ldap
Print ("Engage the yarn LDAP, will not ....") ") #ldap的处理语句, here for the time being replaced with a print, remember that the following exercise is necessary to refine

Return wrapper #return Wrapper
return Outer_wrapper #return Outer_wrapper

# Index Home page, no user name password, can log in directly, so there is no need to decorate the device
def index ():
Print ("Welcome to Index page")

#home页面, need to match user login by local way
@auth (auth_type= "local") # home = wrapper ()
#注意 @auth represents Auth (), while @auth (auth_type= "local") represents Outer_wrapper ()
#所以这里其实是指 home = outer_wrapper (Home) = Wrapper
Def home ():
Print ("Welcome to Home Page")
Return "From Home"

#bbs页面, LDAP is required to match user login
@auth (auth_type= "LDAP")
Def BBS ():
Print ("Welcome to BBS page")

Index ()
Print (Home ()) #其实执行的是wrapper () This method displays the return value of home
#home () #其实执行的是wrapper () This does not show a return value
BBS () #其实执行的是wrapper ()

python3--Decorator Advanced Learning Edition