Advanced Nineth class datetime of the Python module

A datetime module is a collection of date and time two modules. There are 2 constants in the DateTime module: Maxyear has a value of 9999,minyear of 1.

The DateTime module defines 5 classes, each of which is

Datetime.date: A class that represents a date.

The date class has three parameters, Datetime.date (year,month,day), and returns Year-month-day

Method:

1.datetime.date.ctime (), return format as Sun APR 16 00:00:00 2017

2.datetime.date.fromtimestamp (timestamp), returns a Date object based on a given time timestamp, Datetime.date.today () has the same effect

3.datetime.date.isocalendar (): Returns a tuple of the format (Year,month,day), (2017, 15, 6)

4.datetime.date.isoformat (): Returns a format such as Yyyy-mm-dd

5.datetime.date.isoweekday (): Returns the week of the given date (0-6), Monday = 0, Sunday =6

6.datetime.date.replace (Year,month,day): replaces the given date but does not change the original date

7.datetime.date.strftime (format): Formats the DateTime according to the given format.

8.datetime.date.timetuple (): Returns the Time.struct_time object corresponding to the date

Time.struct_time (tm_year=2017, tm_mon=4, tm_mday=15, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=105, tm_isdst=- 1)

9.datetime.date.weekday (): Return day of the week

Python format symbols in time Date:

%y Two-digit year representation (00-99)

%Y Four-digit year representation (000-9999)

%m Month (01-12)

One day in%d months (0-31)

%H 24-hour hours (0-23)

%I 12-hour hours (01-12)

%M minutes (00=59)

%s seconds (00-59)

%a Local Simplified Week name

%A Local Full week name

%b a locally simplified month name

%B Local Full month name

%c Local corresponding date representation and time representation

%j Day of the Year (001-366)

%p the equivalent of a local a.m. or p.m.

%u weeks of the year (00-53) Sunday is the beginning of the week

%w Week (0-6), Sunday for the beginning of the week

%W Week of the Year (00-53) Monday is the beginning of the week

%x Local corresponding date representation

%x Local corresponding time representation

%Z the name of the current time zone

Percent% of the number itself

Second, Datetime.datetime: The class that represents the date time.

The DateTime class has a number of parameters, DateTime (year, month, day[, hour[, minute[, second[, Microsecond[,tzinfo]]), and returns date, time, and seconds

Datetime.datetime.ctime ()

Datetime.datetime.now (). Date (): Returns the day part of the current datetime

Datetime.datetime.now (). Time (): Returns the part of the current date time

Datetime.datetime.fromtimestamp ()

Datetime.datetime.now (): Returns the current system time

Datetime.datetime.replace ()

Datetime.datetime.strftime (): Converted from date format to string format

Datetime.datetime.now (). Strftime ('%b-%d-%y%h:%m:%s ')
' apr-16-2017 21:01:35 '

Datetime.datetime.strptime (): converted from string format to date format

Datetime.time: A class that represents time.

The time class has 5 parameters, Datetime.time (hour,minute,second,microsecond,tzoninfo), and returns 08:29:30

1.datetime.time.replace ()

2.datetime.time.strftime (format): Returns time in format

3.datetime.time.tzname (): Returns the time zone name

4.datetime.time.utcoffset (): Time offset for return time zone

Datetime.timedelta: Represents a time interval, that is, the interval of two points in time.

The Datetime.datetime.timedelta is used to calculate the difference between two dates, for example:

>>> a=datetime.datetime.now ()>>> b=datetime.datetime.now ()>>>  Adatetime.datetime (4, 2017, 16, 4, 871000)>>> bdatetime.datetime, (603000)>>> b-8, 732000)>>> (b-a). Seconds8

V. Datetime.tzinfo: Information about the time zone.

Advanced Nineth class datetime of the Python module