# 不带参数的装饰器, 参考链接：https://foofish.net/decorator-with-paramter.html

def new_func(func):

def wrapper(username):

name = func(username)

return "hello " + name

return wrapper

@new_func

def my_upper(text):

text = text.upper()

return text

print(my_upper("wolf"))

# 带定长参数的装饰器

def new_func1(func):

def wrapper(username, pwd):

if username == 'wolf' and pwd == '123456':

print('确认通过')

return func()

else:

print('用户或密码错误')

return

return wrapper

@new_func1

def verify():

print('开始执行')

verify('wolf', '123456')

# 带不定长参数的装饰器

def new_func2(func):

def wrapper(*args):

if args:

num = len(args)

print('此系统包含', end='') # end=''表示末尾不换行，加空格

for arg in args:

print(arg, ' ', end='')

print('wait', num, 'arg')

return func()

else:

print('用户或密码错误')

return func()

return wrapper

@new_func2

def verify2():

print('开始执行')

verify2('wolf', '123456')