import time
def cost_time(func):
def inner():
t1 = time.perf_counter()
func()
t2 = time.perf_counter()
print(t2 - t1)
return inner
@cost_time
def step_two():
for i in range(10000):
print(i)
def step_one():
t1 = time.perf_counter()
for i in range(10000):
print(i)
t2 = time.perf_counter()
print(t2 - t1)
if __name__ == '__main__':
step_one()
step_two()
装饰器常用用法：
引入日志
函数执行时间统计
执行函数前预处理
执行函数前的清理功能
权限校验
等等
原创文章，作者：wdmbts，如若转载，请注明出处：https://blog.ytso.com/tech/python/273416.html