Conversion of time object generation and time format in Python

1. Convert the time of a string to a timestamp    method        :"2013-10-10 23:40:00" converts         it to a time array         import Time "%y-%m-%d%h:%m:%s") converted to timestamp            :    = int (time.mktime (timearray))    = = 1381419600

2. String format changes such as a="2013-10-10 23:40:00", want to change to a ="2013/10/10 23:40:00"method: Convert to a time array first and then convert to a different format Timearray= Time.strptime (A,"%y-%m-%d%h:%m:%s") Otherstyletime= Time.strftime ("%y/%m/%d%h:%m:%s", Timearray)3The time stamp is converted to the specified format date: Method One: Use LocalTime () to convert to a time array, and then format it to the desired format, such as TimeStamp= 1381419600Timearray=time.localtime (timeStamp) otherstyletime= Time.strftime ("%y-%m-%d%h:%m:%s", Timearray) otherstyletime=="2013-10-10 23:40:00"Method Two:Importdatetime timeStamp= 1381419600Datearray=Datetime.datetime.utcfromtimestamp (timeStamp) otherstyletime= Datearray.strftime ("%y-%m-%d%h:%m:%s") Otherstyletime=="2013-10-10 23:40:00"4. Gets the current time and converts to the specified date format method one:Importtime Gets the current time timestamp now= Int (Time.time ())This is the time stamp converted to another date format, such as:"%y-%m-%d%h:%m:%s"Timearray=time.localtime (timeStamp) otherstyletime= Time.strftime ("%y-%m-%d%h:%m:%s", Timearray) method two:Importdatetime gets current time now= Datetime.datetime.now ()This is the time array format converted to the specified format: Otherstyletime= Now.strftime ("%y-%m-%d%h:%m:%s") 5. Get three days before the time method:Import TimeImportdatetime First gets the date of the time array format Threedayago= (Datetime.datetime.now ()-Datetime.timedelta (days = 3) ) Convert to timestamp: TimeStamp=Int (Time.mktime (Threedayago.timetuple ())) is converted to another string format: Otherstyletime= Threedayago.strftime ("%y-%m-%d%h:%m:%s"Note: The parameters of Timedelta () are: Days,hours,seconds,microseconds6. Given a timestamp, calculate the time of the day before time: TimeStamp= 1381419600Convert to datetime firstImportdatetimeImportTime Datearray=Datetime.datetime.utcfromtimestamp (timeStamp) Threedayago= Datearray-datetime.timedelta (days = 3) Reference 5, can be converted to any other format.

%a	Shorthand for English Week	Mon
%A	Complete writing of English week	Monday
%b	Abbreviations for English months	June
%B	Complete writing of the English month	June
%c	Displays the local date and time	06/30/14 01:03:17
%I	Number of hours, value between 01~12	01
%j	Displays the number of days from the first day of the year to the day	181
%w (week)	Show today is the day of the week, 0 means Sunday	1
%W	Show the week of the year, Monday as the first day of the week	==> 26*7 = 182 days
%x	Local date of day	06/30/14
%x	local time of day	01:09:54
%y	Year, value between 00~99	14
%Y	Complete spelling of the year	2014
%m (month)	month, the value is between 01~12	06
%d (day)	Number of dates, value between 1~31	30
%H (Hour)	Number of hours, value between 00~23	01
%M (Minute)	Number of minutes, value between 01~59	04
%s	Seconds	58

Conversion of time object generation and time format in Python