python中time.time()和

python中time.time()和 time.strftime()：

time.time()返回的是一个浮点数，以秒为单位，time.strftime后可以自定义格式，如time.strftime('%Y-%m-%d %H:%M:%S')

#!/usr/bin/Python

import time

t1 = time.time()
print t1

t2 = time.strftime('%Y-%m-%d %H:%M:%S')
print t2
:wq

今天、昨天、上月、去年：

#!/usr/bin/python

import time
today = time.strftime('%Y-%m-%d')
yesterday = time.localtime()[2]-1
last_month = time.localtime()[1]-1
last_year = time.localtime()[0]-1
print today
print yesterday
print last_month
print last_year
:wq