复杂时间的处理分钟、小时、前等

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python datetime获取几分钟、小时、天之前的时间

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import datetime print ((datetime.datetime.now()-datetime.timedelta(days=1)).strftime("%Y-%m-%d %H:%M")) print ((datetime.datetime.now()-datetime.timedelta(minutes=1)).strftime("%Y-%m-%d %H:%M")) print ((datetime.datetime.now()-datetime.timedelta(seconds=1)).strftime("%Y-%m-%d %H:%M"))

时间处理 

datetime.datetime.now().month 获取当前月份 （year，month，day）

temp = response.doc("div.scd-title em").text()
                if temp.find("今天") !=-1:
                    temp = "%s%s%s%s%s" %(str(datetime.datetime.now().month),"-",str(datetime.datetime.now().day)," ",temp.replace("今天",""))
                else:
                    temp = temp.replace("月","-").replace("日","")
                pub_time ="%s%s%s" %(str(datetime.datetime.now().year),"-",temp)
            print("pub_time:"+pub_time)

　　输出结果

 以下是随机获取15天前的日期和时间实例：

import datetime
import random
d = random.randint(0,15)
date = ((datetime.datetime.now()-datetime.timedelta(days=d)).strftime("%Y-%m-%d %H:%M:%S"))
# print date
day = date[0:11]
# print "day:", day
h = random.randint(0,24)
date = ((datetime.datetime.now()-datetime.timedelta(hours=h)).strftime("%Y-%m-%d %H:%M:%S"))
# print date
hour = date[11:13]
# print "hour: ",hour
m = random.randint(0,15)
date = ((datetime.datetime.now()-datetime.timedelta(minutes=m)).strftime("%Y-%m-%d %H:%M:%S"))
# print date
minue = date[14:16]
# print "minue: ", minue
s = random.randint(0,24)
date = ((datetime.datetime.now()-datetime.timedelta(seconds=s)).strftime("%Y-%m-%d %H:%M:%S"))
# print date
second = date[17:19]
# print "second: ", second
new_time = hour+":"+minue+":"+second
print day,new_time

　输出结果：

　

实例：

#coding:UTF-8
import time
import datetime
import random
def get_time():
    d = random.randint(0,15)
    date = ((datetime.datetime.now()-datetime.timedelta(days=d)).strftime("%Y-%m-%d %H:%M:%S"))
    # print date
    day = date[0:11]
    # print "day:", day

    h = random.randint(0,24)
    date = ((datetime.datetime.now()-datetime.timedelta(hours=h)).strftime("%Y-%m-%d %H:%M:%S"))
    # print date
    hour = date[11:13]
    # print "hour: ",hour

    m = random.randint(0,15)
    date = ((datetime.datetime.now()-datetime.timedelta(minutes=m)).strftime("%Y-%m-%d %H:%M:%S"))
    # print date
    minue = date[14:16]
    # print "minue: ", minue
    s = random.randint(0,24)
    date = ((datetime.datetime.now()-datetime.timedelta(seconds=s)).strftime("%Y-%m-%d %H:%M:%S"))
    # print date
    second = date[17:19]
    # print "second: ", second

    new_time = hour+":"+minue+":"+second
    return day.strip(),new_time.strip()
day,times=get_time()
print day
print times
str_1 = '{"PN":"34VT123","DUID":"XXXX","location":{"coordinates":[-100.35256443,33.4586858]},"SPD":125,"DT":"'
str_2 = 'Z","driverID":"XXXXX","cate":"event","subCate":"OBDII","eventOBDII":{"what":"emergencyBrake","param":2,"GID":123456479}}'
des_str = '2017-06-02T13:15:20'
str_des = str_1 + day + 'T' + times + str_2
print str_des

　输出

> "D:\Python27\python.exe"  "F:\MQTT_testing\data.py"
2017-05-26
02:21:19
{"PN":"34VT123","DUID":"XXXX","location":{"coordinates":[-100.35256443,33.4586858]},"SPD":125,"DT":"2017-05-26T02:21:19Z","driverID":"XXXXX","cate":"event","subCate":"OBDII","eventOBDII":{"what":"emergencyBrake","param":2,"GID":123456479}}

处理a = "20181107" 可以用切片 拼接 a_time = '-'.join([a[0:4],a[4:6],a[6:8]])