这个装饰器就是万能的了，只需要把111和222分别替代为提前，和之后处理的功能就好
适用于装饰函数
# 装饰器函数
def cont_time(func):
"""统计时间的装饰器"""
def inner(*args, **kwargs):
print('111')
res = func(*args, **kwargs)
print('222')
return res
return inner
》随堂
import time
# 装饰器函数
def cont_time(func):
"""统计时间的装饰器"""
def inner(*args, **kwargs):
start_time = time.time()
print('计时开始。。。')
res = func(*args, **kwargs)
end_time = time.time()
print('计时结束，总共耗时{:.2f}秒'.format(end_time - start_time))
return res
return inner
# 功能函数
@cont_time #do_work = count_time(do_work) ---> do_work = inner
def do_work(gender="男"):
"""有耗时的函数"""
print('do_work开始')
time.sleep(1)
print('do_work结束')
@cont_time # do_work2 = cont_time(do_work2)
def do_work2(name, age, grade):
print('do_work2开始')
print(name, age ,grade)
time.sleep(1)
print('do_work2结束')
return 2
do_work(gender="女") # inner()
res = do_work2("张三", 18, 20) # inner("张三")
print(res)
