python实现简单日期工具类

本文实例为大家分享了python实现简单日期工具类的具体代码，供大家参考，具体内容如下

import datetime
import time

datetime_format = "%y-%m-%d %h:%m:%s"
time_format = "%h:%m:%s"

#当前毫秒数
def curmilis():
  return int(time.time() * 1000)

#当前秒数
def curseconds():
  return int(time.time())

#当前日期 格式%y-%m-%d %h:%m:%s
def curdatetime():
  return datetime.datetime.strftime(datetime.datetime.now(),datetime_format)

#当前日期 格式%y-%m-%d
def curdate():
  return datetime.date.today()

#当前时间 格式%y-%m-%d
def curtime():
  return time.strftime(time_format)

#秒转日期
def secondstodatetime(seconds):
  return time.strftime(datetime_format,time.localtime(seconds))

#毫秒转日期
def milistodatetime(milix):
  return time.strftime(datetime_format,time.localtime(milix//1000))

#日期转毫秒
def datetimetomilis(datetimestr):
  strf = time.strptime(datetimestr,datetime_format)
  return int(time.mktime(strf)) * 1000

#日期转秒
def datetimetoseconds(datetimestr):
  strf = time.strptime(datetimestr,datetime_format)
  return int(time.mktime(strf))

#当前年
def curyear():
  return datetime.datetime.now().year
#当前月
def curmonth():
  return datetime.datetime.now().month

#当前日
def curday():
  return datetime.datetime.now().day

#当前时
def curhour():
  return datetime.datetime.now().hour

#当前分
def curminute():
  return datetime.datetime.now().minute

#当前秒
def cursecond():
  return datetime.datetime.now().second

#星期几
def curweek():
  return datetime.datetime.now().weekday()

#几天前的时间
def nowdaysago(days):
  daysagotime = datetime.datetime.now() - datetime.timedelta(days = days)
  return time.strftime(datetime_format,daysagotime.timetuple())

#几天后的时间
def nowdaysafter(days):
  daysagotime = datetime.datetime.now() + datetime.timedelta(days = days)
  return time.strftime(datetime_format,daysagotime.timetuple())

#某个日期几天前的时间
def dtimedaysago(dtimestr,days):
  daysagotime = datetime.datetime.strptime(dtimestr,datetime_format) - datetime.timedelta(days = days)
  return time.strftime(datetime_format,daysagotime.timetuple())

#某个日期几天前的时间
def dtimedaysafter(dtimestr,days):
  daysagotime = datetime.datetime.strptime(dtimestr,datetime_format) + datetime.timedelta(days = days)
  return time.strftime(datetime_format,daysagotime.timetuple())


secondstamp = curseconds()
print("当前秒：",secondstamp)
milisstamp = curmilis()
print("当前毫秒：",milisstamp)

curdtime = curdatetime()
print("当前时间：",curdtime)
curdate = curdate()
print("当前日期：",curdate)
curt = curtime()
print("当前时刻：",curt)


stdtime = secondstodatetime(secondstamp)
print("秒转时间：",stdtime)
mtdtime = milistodatetime(milisstamp)
print("毫秒转时间：",mtdtime)
dtimetm = datetimetomilis(mtdtime)
print("时间转毫秒：",dtimetm)
dtimets = datetimetoseconds(mtdtime)
print("时间转秒：",dtimets)

year = curyear()
print("年：",year)
month = curmonth()
print("月：",month)
day = curday()
print("日：",day)
hour = curhour()
print("时：",hour)
minute = curminute()
print("分：",minute)
second = cursecond()
print("秒：",second)
week = curweek()
print("星期：",week)

输出结果如下：

当前秒： 1518341913
当前毫秒： 1518341913403
当前时间： 2018-02-11 17:38:33
当前日期： 2018-02-11
当前时刻： 17:38:33
秒转时间： 2018-02-11 17:38:33
毫秒转时间： 2018-02-11 17:38:33
时间转毫秒： 1518341913000
时间转秒： 1518341913
年： 2018
月： 2
日： 11
时： 17
分： 38
秒： 33
星期： 6
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