Python time模塊時(shí)間轉(zhuǎn)換

獲取當(dāng)前時(shí)間

獲取當(dāng)前時(shí)間戳

time_now = int(time.time())  #時(shí)間戳  
# 1529461333

格式化時(shí)間

import time
current_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
current_hour=time.strftime('%H',time.localtime(time.time()))
#輸出格式: '2018-06-20 10:20:19'

數(shù)據(jù)庫(kù)datetime格式支持。

current_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))
#在數(shù)據(jù)庫(kù)中，字段可以是varchar而不是datetime

將時(shí)間戳轉(zhuǎn)為時(shí)間

a=1490931508
time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(a))

將時(shí)間轉(zhuǎn)為時(shí)間戳

c='2017-03-31 11:38:28'
d=time.strptime(c,'%Y-%m-%d %H:%M:%S')
time.mktime(d)

JSON序列化mysql里datetime字段

from bson import json_util
import json

json.dumps(anObject, default=json_util.default)
json.loads(aJsonString, object_hook=json_util.object_hook)

時(shí)間運(yùn)算：

方法一：

        time1 = datetime.datetime.now()
        time2 = datetime.datetime.now()
        seconds = (time2 - time1).seconds
        print 'seconds',seconds

方法二：

        #先獲得時(shí)間數(shù)組格式的日期
        oneDayAgo = (datetime.datetime.now() - datetime.timedelta(days = 1))
        #minutes, days, months,

        #轉(zhuǎn)換為時(shí)間戳:
        timeStamp = int(time.mktime(oneDayAgo.timetuple()))  

        #轉(zhuǎn)換為其他字符串格式:
        time1 = oneDayAgo.strftime("%Y-%m-%d %H:%M:%S")
        time2 =  host.update_time

        if time2 > time1:
            print "正常"
        else:
            print "未上報(bào)"