Example 1: format time python
| Directive | Meaning | Example |
|-----------|------------------------------------------------------------------------------------------|
|%a | Abbreviated weekday name. | Sun, Mon, .. |
|%A | Full weekday name. | Sunday, Monday, ... |
|%w | Weekday as a decimal number. | 0, 1, ..., 6 |
|%d | Day of the month as a zero-padded decimal. | 01, 02, ..., 31 |
|%-d | Day of the month as a decimal number. | 1, 2, ..., 30 |
|%b | Abbreviated month name. | Jan, Feb, ..., Dec |
|%B | Full month name. | January, February, ... |
|%m | Month as a zero-padded decimal number. | 01, 02, ..., 12 |
|%-m | Month as a decimal number. | 1, 2, ..., 12 |
|%y | Year without century as a zero-padded decimal number. | 00, 01, ..., 99 |
|%-y | Year without century as a decimal number. | 0, 1, ..., 99 |
|%Y | Year with century as a decimal number. | 2013, 2019 etc. |
|%H | Hour (24-hour clock) as a zero-padded decimal number. | 00, 01, ..., 23 |
|%-H | Hour (24-hour clock) as a decimal number. | 0, 1, ..., 23 |
|%I | Hour (12-hour clock) as a zero-padded decimal number. | 01, 02, ..., 12 |
|%-I | Hour (12-hour clock) as a decimal number. | 1, 2, ... 12 |
|%p | Locale’s AM or PM. | AM, PM |
|%M | Minute as a zero-padded decimal number. | 00, 01, ..., 59 |
|%-M | Minute as a decimal number. | 0, 1, ..., 59 |
|%S | Second as a zero-padded decimal number. | 00, 01, ..., 59 |
|%-S | Second as a decimal number. | 0, 1, ..., 59 |
|%f | Microsecond as a decimal number, zero-padded on the left. | 000000 - 999999 |
|%z | UTC offset in the form +HHMM or -HHMM. | |
|%Z | Time zone name. | |
|%j | Day of the year as a zero-padded decimal number. | 001, 002, ..., 366 |
|%-j | Day of the year as a decimal number. 1, 2, ..., 366 | |
|%U | Week number of the year (Sunday as the first day of the week). | 00, 01, ..., 53 |
|%W | Week number of the year (Monday as the first day of the week). | 00, 01, ..., 53 |
|%c | Locale’s appropriate date and time representation. | Mon Sep 30 07:06:05 2013|
|%x | Locale’s appropriate date representation. | 09/30/13 |
|%X | Locale’s appropriate time representation. | 07:06:05 |
|%% | A literal '%' character. | % |
Example 2: python datetime now
import datetime
print(datetime.datetime.now()) #datetime.datetime.now() is the syntax