#-*- coding: utf-8 -*-
import datetime
# Given date backward N The date of the day
def dateadd_day(days):
d1 = datetime.datetime.now()
d3 = d1 + datetime.timedelta(days)
return d3
# Yesterday,
def getYesterday():
today = datetime.date.today()
oneday = datetime.timedelta(days=1)
yesterday = today - oneday
return yesterday
# Today,
def getToday():
return datetime.date.today()
# Gets the date of the last few days for a given parameter, and returns one list
def getDaysBefore(num):
today = datetime.date.today()
oneday = datetime.timedelta(days=1)
li = []
for i in range(0, num):
# Minus one day today, minus one day at a time
today = today - oneday
# Converts a date to a string
li.append(datetostr(today))
return li
# Converts a string to datetime type
def strtodatetime(datestr, format):
return datetime.datetime.strptime(datestr, format)
# The time is converted to a string , Format for 2015-02-02
def datetostr(date):
return str(date)[0:10]
# The time is converted to a string , Format for 2015-02-02
def datetostr_secod(date):
return str(date)[0:19]
# How many days are there between the two dates? 2015-2-04 and 2015-3-1
def datediff(beginDate, endDate):
format = "%Y-%m-%d"
bd = strtodatetime(beginDate, format)
ed = strtodatetime(endDate, format)
oneday = datetime.timedelta(days=1)
count = 0
while bd != ed:
ed = ed - oneday
count += 1
return count
# The number of seconds between the two dates
def datediff_seconds(beginDate, endDate):
format = "%Y-%m-%d %H:%M:%S"
if " " not in beginDate or ':' not in beginDate:
bformat = "%Y-%m-%d"
else:
bformat = format
if " " not in endDate or ':' not in endDate:
eformat = "%Y-%m-%d"
else:
eformat = format
starttime = strtodatetime(beginDate, bformat)
endtime = strtodatetime(endDate, eformat)
ret = endtime - starttime
return ret.days * 86400 + ret.seconds
# Gets all The Times of the two time periods , return list
def getDays(beginDate, endDate):
format = "%Y-%m-%d"
begin = strtodatetime(beginDate, format)
oneday = datetime.timedelta(days=1)
num = datediff(beginDate, endDate) + 1
li = []
for i in range(0, num):
li.append(datetostr(begin))
begin = begin + oneday
return li
# Get the current year It's a string
def getYear(date=datetime.date.today()):
return str(date)[0:4]
# Get the current month It's a string
def getMonth(date=datetime.date.today()):
return str(date)[5:7]
# Get current day It's a string
def getDay(date=datetime.date.today()):
return str(date)[8:10]
# Get the current hour It's a string
def getHour(date=datetime.datetime.now()):
return str(date)[11:13]
# Get the current minute It's a string
def getMinute(date=datetime.datetime.now()):
return str(date)[14:16]
# Get current second It's a string
def getSecond(date=datetime.datetime.now()):
return str(date)[17:19]
def getNow():
return datetime.datetime.now()
print dateadd_day(10)
#2015-02-14 16:41:13.275000
print getYesterday()
#2015-02-03
print getToday()
#2015-02-04
print getDaysBefore(3)
#['2015-02-03', '2015-02-02', '2015-02-01']
print datediff('2015-2-01', '2015-10-05')
#246
print datediff_seconds('2015-02-04', '2015-02-05')
#86400
print datediff_seconds('2015-02-04 22:00:00', '2015-02-05')
#7200
print getDays('2015-2-03', '2015-2-05')
#['2015-02-03', '2015-02-04', '2015-02-05']
print datetostr_secod(getNow())
#2015-02-04 16:46:47
print str(getYear(dateadd_day(-50))) + '-'
+ getMonth() + '-'
+ getDay() + ' '
+ getHour() + ':'
+ getMinute() + ':'
+ getSecond()
#2014-02-04 16:59:04
print getNow()
#2015-02-04 16:46:47.454000