python计算时间差

前言

之前写代码都是看打印的初始和结束时间然后自己算间隔时间,感觉总是不方便,这不符合python的优雅简洁,于是去寻找简便之道.

方法

time模块计算时间差

import time

s_time = time.time()
for i in range(1000):
    print(i)
c_time = time.time()
ss_time = c_time - s_time
print('%.3f秒'%ss_time)
print('执行结束！！！')

datetime时间模块计算时间差

from datetime import datetime
a = datetime.Now()
for x in range(10000):
    print(x)
b = datetime.Now()
print(a)
print(b)
print("运行时间："+str(b-a)+" 秒")

from datetime import datetime
a = datetime.Now()
for x in range(100000):
    print(x)
b = datetime.Now()
print(a)
print(b)
print("运行时间："+str((b-a).seconds)+" 秒")

from datetime import datetime
a = datetime(2020,10,28,14,41,9,386637)
b = datetime(2020,11,29,386637)
print(a)
print(b)
print("运行时间："+str((b-a).days)+" 天")