python 装饰器在类中的使用
示例：
1 # encoding="utf-8" 2 3 import os 4 import time 5 from functools import wraps 6 7 8 class Demo(objecct): 9 def __init__(self): 10 pass 11 12 def print_run_time(func): 13 @wraps(func) 14 def wrapper(self, *args, **kw): 15 start_time = time.time() 16 result = func(self, *args, **kw) 17 end_time = time.time() 18 # print("函数的运行时间(s)：{}".format(end_time - start_time)) 19 self.write_to_file.info_to_file("函数的运行时间(s)：{}".format(end_time - start_time)) 20 # print("函数的运行时间(ms)：{}".format(float(end_time - start_time) * 1000.0)) 21 self.write_to_file.info_to_file("函数的运行时间(ms)：{}".format(float(end_time - start_time) * 1000.0)) 22 return result 23 24 return wrapper 25 26 @print_run_time 27 def add_sum(self, a, b): 28 sum = a + b 29 return sum 30 31 32 Demo().add_sum(10, 20)
