python的装饰器

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2020-5-4

分类： web后端

文章作者：痴迷

# def sum(fn): # def sun(): # print('我三sum') # ......

		# def sum(fn):
	
		#     def sun():
	
		#         print('我三sum')
	
		#         fn()
	
		#
	
		#     return sun
	
		#
	
		#
	
		# def a():
	
		#     print('我是a')
	
		#
	
		#
	
		# a = sum(a)
	
		# a()
	
		# @函数名代表装饰器
	
		# def sum(fn):
	
		#     def sun():
	
		#         print('我三sum')
	
		#         fn()
	
		#
	
		#     return sun
	
		#
	
		#
	
		# @sum
	
		# def a():
	
		#     print('我是a')
	
		#
	
		#
	
		# a()
	
		#
	
		# import time
	
		#
	
		#
	
		# def get_time(fn):
	
		#     def inner():
	
		#         start = time.time()
	
		#         fn()
	
		#         end = time.time()
	
		#         print(end - start)
	
		#
	
		#     return inner
	
		#
	
		#
	
		# @get_time
	
		# def func():
	
		#     for i in range(100000000):
	
		#         print(i)
	
		#
	
		#
	
		# func()
	
		# def aa(fn):
	
		#     def ac(a, b):
	
		#         return fn(a, b)
	
		#
	
		#     return ac
	
		#
	
		#
	
		# @aa
	
		# def sun(a, b):
	
		#     s = a + b
	
		#     return s
	
		#
	
		#
	
		# f = sun(1, 2)
	
		# print(f)
	
		def d(f):
	
		print(f)
	
		def a(fn):
	
		def b():
	
		print('fn调用')
	
		fn()
	
		return b
	
		return a
	
		@d('+')
	
		def c():
	
		print('111')
	
		c()