Python Dates | 您所在的位置:网站首页 › output date type › Python Dates |
Python Datetime
❮ Previous
Next ❯
Python Dates
A date in Python is not a data type of its own, but we can import a module named datetime to work with dates as date objects. ExampleImport the datetime module and display the current date: import datetimex = datetime.datetime.now()print(x) Try it Yourself » Date OutputWhen we execute the code from the example above the result will be: The date contains year, month, day, hour, minute, second, and microsecond. The datetime module has many methods to return information about the date object. Here are a few examples, you will learn more about them later in this chapter: ExampleReturn the year and name of weekday: import datetimex = datetime.datetime.now() print(x.year) print(x.strftime("%A")) Try it Yourself » Creating Date ObjectsTo create a date, we can use the datetime() class (constructor) of the datetime module. The datetime() class requires three parameters to create a date: year, month, day. ExampleCreate a date object: import datetimex = datetime.datetime(2020, 5, 17) print(x) Try it Yourself »The datetime() class also takes parameters for time and timezone (hour, minute, second, microsecond, tzone), but they are optional, and has a default value of 0, (None for timezone). The strftime() MethodThe datetime object has a method for formatting date objects into readable strings. The method is called strftime(), and takes one parameter, format, to specify the format of the returned string: ExampleDisplay the name of the month: import datetimex = datetime.datetime(2018, 6, 1) print(x.strftime("%B")) Try it Yourself »A reference of all the legal format codes: Directive Description Example Try it %a Weekday, short version Wed Try it » %A Weekday, full version Wednesday Try it » %w Weekday as a number 0-6, 0 is Sunday 3 Try it » %d Day of month 01-31 31 Try it » %b Month name, short version Dec Try it » %B Month name, full version December Try it » %m Month as a number 01-12 12 Try it » %y Year, short version, without century 18 Try it » %Y Year, full version 2018 Try it » %H Hour 00-23 17 Try it » %I Hour 00-12 05 Try it » %p AM/PM PM Try it » %M Minute 00-59 41 Try it » %S Second 00-59 08 Try it » %f Microsecond 000000-999999 548513 Try it » %z UTC offset +0100 %Z Timezone CST %j Day number of year 001-366 365 Try it » %U Week number of year, Sunday as the first day of week, 00-53 52 Try it » %W Week number of year, Monday as the first day of week, 00-53 52 Try it » %c Local version of date and time Mon Dec 31 17:41:00 2018 Try it » %C Century 20 Try it » %x Local version of date 12/31/18 Try it » %X Local version of time 17:41:00 Try it » %% A % character % Try it » %G ISO 8601 year 2018 Try it » %u ISO 8601 weekday (1-7) 1 Try it » %V ISO 8601 weeknumber (01-53) 01 Try it » ❮ Previous Next ❯ |
CopyRight 2018-2019 实验室设备网 版权所有 |