计算程序运行时间

time模块下的perf_counter方法可用于精确计算程序运行的时间:

import time

start = time.perf_counter()
l = list(range(10000))
end = time.perf_counter()
run_time= end - start
print(run_time)

'''
0.000290873000267311
'''

 

perf_counter方法会把sleep的时间包含进去

import time

start = time.perf_counter()
l = list(range(10000))
time.sleep(1)
end = time.perf_counter()
run_time= end - start
print(run_time)

'''
1.000621135000074
'''