获取当前时间

获取当前时间戳

time_now = int(time.time()) #时间戳 # 1529461333格式化时间

import timecurrent_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))current_hour=time.strftime('%H',time.localtime(time.time()))#输出格式: '2018-06-20 10:20:19'数据库datetime格式支持。

current_time=time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))#在数据库中，字段可以是varchar而不是datetime将时间戳转为时间

a=1490931508time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(a))将时间转为时间戳

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_utilimport jsonjson.dumps(anObject, default=json_util.default)json.loads(aJsonString, object_hook=json_util.object_hook)时间运算：

方法一：

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

方法二：

#先获得时间数组格式的日期 oneDayAgo = (datetime.datetime.now() - datetime.timedelta(days = 1)) #minutes, days, months, #转换为时间戳: timeStamp = int(time.mktime(oneDayAgo.timetuple())) #转换为其他字符串格式: time1 = oneDayAgo.strftime("%Y-%m-%d %H:%M:%S") time2 = host.update_time if time2 > time1: print "正常" else: print "未上报"