9.python时间处理工具

# 东八区时间处理

import time
from datetime import datetime
from datetime import timedelta
 
time_stamp = 1537846361
 
loc_time = time.localtime(time_stamp)
time1 = time.strftime("%Y-%m-%d %H:%M:%S",loc_time)
 
utc_time = datetime.utcfromtimestamp(time_stamp)
time2 = utc_time + timedelta(hours=8)
 
print(time1)
print(time2.strftime("%Y-%m-%d %H:%M:%S"))

 

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import datetime

# 输入日期判断是哪一年的第几周，周几
def getYearWeek(strdate):
    date = datetime.datetime.strptime(strdate, '%Y-%m-%d')
    YearWeek = date.isocalendar()
    return YearWeek

# 当前时间是哪一年的第几周，周几
def getNowYearWeek():
    timenow = datetime.datetime.now()
    NowYearWeek = timenow.isocalendar()
    return NowYearWeek

# 当前时间所在周的周一时间
def getDayInweekMonday():
    week_num = datetime.datetime.now().weekday()
    Monday = datetime.datetime.now() + datetime.timedelta(days=-week_num)
    Monday = str(Monday)[0:10]
    return Monday

# 获取上一周的周一和周日的时间
def getDayLastWeekMondayAndSunday():
    week_num = datetime.datetime.now().weekday()

    Monday = datetime.datetime.now() - datetime.timedelta(days=7)+datetime.timedelta(days=-week_num)
    Monday = Monday.strftime('%Y-%m-%d 00:00:00')
    Monday = str(Monday)[0:10]

    Sunday = datetime.datetime.now() - datetime.timedelta(days=1)+datetime.timedelta(days=-week_num)
    Sunday = Sunday.strftime('%Y-%m-%d 23:59:59')
    Sunday = str(Sunday)[0:10]
    # print str(Sunday)[0:10]

    return Monday,Sunday


# weekflag格式为"2016#53"（即2016年第53周的开始时间）
def getWeekFirstday(weekflag):
    year_str = weekflag[0:4]  # 取到年份
    week_str = weekflag[5:]  # 取到周
    if int(week_str) >= 53:
        Monday = "Error,Week Num greater than 53!"
    else:
        yearstart_str = year_str + '0101'  # 当年第一天
        yearstart = datetime.datetime.strptime(yearstart_str, '%Y%m%d')  # 格式化为日期格式
        yearstartcalendarmsg = yearstart.isocalendar()  # 当年第一天的周信息
        yearstartweekday = yearstartcalendarmsg[2]
        yearstartyear = yearstartcalendarmsg[0]
        if yearstartyear < int(year_str):
            daydelat = (8 - int(yearstartweekday)) + (int(week_str) - 1) * 7
        else:
            daydelat = (8 - int(yearstartweekday)) + (int(week_str) - 2) * 7
        Monday = (yearstart + datetime.timedelta(days=daydelat)).date()
    return Monday


if __name__ == '__main__':
    strdate = '2017-01-01'
    print getYearWeek(strdate)
    print getNowYearWeek()
    print getDayInweekMonday()
    print getDayLastWeekMondayAndSunday()
    # 输出2014年第35周的开始时间
    print getWeekFirstday('2014#35')