Python Learning 11th Day Decorator

1. Homework explanation

# 2, write a function, receive n numbers, and the number of these parameters.
def sum_func (*args):
   Total = 0
   For i in args:
      Total + = I
   Return Total
Print (Sum_func (1,2,3,8,23,6))

# 3, read the code, answer: In the code, print out the value of a,b,c, what are the respective? Why?
#  a=10
#  B=20
#  def test5 (A, B):
#          Print (A, B)
#  C = test5 (b,a)
#  Print (c)



# 4, read the code, answer: In the code, print out the value of a,b,c, what are the respective? Why?
#  a=10
#  B=20
#  def test5 (A, B):
#     A=3
#     B=5
#          Print (A, B)
#  C = test5 (b,a)
#  Print (c)

2. Decorative Device

# Adorner Formation process: The simplest adorner has a parameter with a return value of the Universal parameter
# The role of decorators
# principle: Open Closure principle
# syntax Sugar: @
# Decorator's Fixed mode

#不懂技术


Import time
# Print (Time.time ()) # Get current time
# Time.sleep (#让程序在执行到这个位置的时候停一会儿)


# def Timmer (f): #装饰器函数
# def inner ():
# start = Time.time ()
# ret = f () #被装饰的函数
# end = Time.time ()
# Print (End-start)
# return RET
# return Inner
#
# @timmer #语法糖 @ Adorner function name
# def func (): #被装饰的函数
# Time.sleep (0.01)
# print (' Good boss, good colleagues, good people ')
# return ' Good New Year '
# # func = Timmer (func)
# ret = func () #inner ()
# Print (ret)
# The role of adorners--do not want to modify the function call method but also want to add functionality before and after the original function
# Timmer is an adorner function, but it has some decorative effects on a function

# principle: Open Closure principle
# Open: Open to Extensions
# closed: Closed for modification

# sealed version

# DEF outer ():
# def inner ():
# return ' inner '
# inner ()
#
# outer ()

#装饰带参数函数的装饰器
# def Timmer (f): #装饰器函数
# def inner (*args,**kwargs):
# (+)/(1)
# start = Time.time ()
# ret = f (*args,**kwargs) #f #被装饰的函数
# end = Time.time ()
# Print (End-start)
# return RET
# return Inner
#
# @timmer #语法糖 @ Adorner function name
# def func (A, b): #被装饰的函数
# Time.sleep (0.01)
# print (' Good boss, good colleagues, good people ', A, b)
# return ' Good New Year '
#
# @timmer #语法糖 @ Adorner function name
# def FUNC1 (a): #被装饰的函数
# Time.sleep (0.01)
# print (' Good boss, good colleagues, good people ', a)
# return ' Good New Year '
# # func = Timmer (func)
# ret = Func #inner ()
# ret = func (1,b = 2) #inner ()
# Print (ret)

# Def wrapper (f): #装饰器函数, F is the decorated function
# def inner (*args,**kwargs):
# "Things to do before being decorated function"
# ret = f (*args,**kwargs) #被装饰的函数
# ' What to do after being decorated function '
# return RET
# return Inner
#
# @wrapper #语法糖 @ Adorner function name
# def func (A, b): #被装饰的函数
# Time.sleep (0.01)
# print (' Good boss, good colleagues, good people ', A, b)
# return ' Good New Year '
# Print (func)

# def wrapper ():
# def inner ():
# Pass
# return Inner

# def wrapper (func): #qqxing
# def inner (*args,**kwargs):
# ret = func (*args,**kwargs) #被装饰的函数
# return RET
# return Inner
#
# @wrapper #qqxing = wrapper (qqxing)
# def qqxing ():
# print (123)
#
# ret = qqxing () #inner

#
# Explaining the New Year's Day job extension decorator

Python Learning 11th Day Decorator