日期和时间

from datetime import datetime, date

now = datetime.now()
now #datetime.datetime(2016, 8, 13, 23, 7, 47, 768757)
print(now.strftime('%Y-%m-%d %H:%M:%S')) #2016-08-13 23:08:04

# 检测是否是闰年
import calendar
print(calendar.isleap(1900)) #False
print(calendar.isleap(1996)) #True

# datetime模块
#date 处理年、月、日
#time 处理时、分、秒和分数
#datetime 处理日期和时间同时出现的情况
#timedelta 处理日期和/ 或时间间隔
from datetime import date
halloween = date(2014, 10, 31)
print(halloween.day) #31
print(halloween.month) #10
print(halloween.year) #2014
print(halloween.isoformat()) #'2014-10-31'