装饰器

import time
def wrapper(fn):
    t = 0
    def inner(*args, **kwargs):
        nonlocal t
        tt = time.time()
        if tt - t >= 10:
            t = time.time()
            return fn(*args, **kwargs)
        else:
            print("限制访问")
    return inner

def wrapper_again_5(fn):
   
    def inner(*args, **kwargs):
        fn(*args, **kwargs)
        fn(*args, **kwargs)
        fn(*args, **kwargs)
        fn(*args, **kwargs)
        fn(*args, **kwargs)
    return inner
# from types import FunctionType, MethodType
# isinstance()
#
# format(192, "08b")

# @wrapper
# def func():
#     print("哈哈")
#
# func()
# time.sleep(11)
# func()
# func()


# nums = range(2,20)
# for i in nums: # [2,19] # 2   [2,3,  ]
#     nums = filter(lambda x:x == i or x % i, nums)
#
# # 迭代器惰性机制
# print(list(nums))
#
# "".split("\\")
from collections import Counter

lst = [1,2,3,3,3,3,3,4,4,4,4,1,1,1,2,2,1,6,7]

c = Counter(lst)
sum = 0
for k, v in c.items():
    if v == 1:
       sum += k
print(sum)