计算程序运行时间

Posted 2020-12-21 panlj

time模块下的perf_counter方法可用于精确计算程序运行的时间:

 1 import time
 2 
 3 start = time.perf_counter()
 4 l = list(range(10000))
 5 end = time.perf_counter()
 6 run_time= end - start
 7 print(run_time)
 8 
 9 ‘‘‘
10 0.000290873000267311
11 ‘‘‘

 

perf_counter方法会把sleep的时间包含进去

 1 import time
 2 
 3 start = time.perf_counter()
 4 l = list(range(10000))
 5 time.sleep(1)
 6 end = time.perf_counter()
 7 run_time= end - start
 8 print(run_time)
 9 
10 ‘‘‘
11 1.000621135000074
12 ‘‘‘