| Format character | Description | Example output |
|---|---|---|
| a | 'a.m.' or 'p.m.' (Note that this is slightly different than PHP’s output, because this includes periods to match Associated Press style.) | 'a.m.' |
| A | 'AM' or 'PM'. | 'AM' |
| b | Month, textual, 3 letters, lowercase. | 'jan' |
| B | Not implemented. | |
| c | ISO 8601 format. (Note: unlike others formatters, such as “Z”, “O” or “r”, the “c” formatter will not add timezone offset if value is a naive datetime (see datetime.tzinfo). | 2008-01-02T10:30:00.000123+02:00, or 2008-01-02T10:30:00.000123 if the datetime is naive |
| d | Day of the month, 2 digits with leading zeros. | '01' to '31' |
| D | Day of the week, textual, 3 letters. | 'Fri' |
| e | Timezone name. Could be in any format, or might return an empty string, depending on the datetime. | '', 'GMT', '-500', 'US/Eastern', etc. |
| E | Month, locale specific alternative representation usually used for long date representation. | 'listopada' (for Polish locale, as opposed to 'Listopad') |
| f | Time, in 12-hour hours and minutes, with minutes left off if they’re zero. Proprietary extension. | '1', '1:30' |
| F | Month, textual, long. | 'January' |
| g | Hour, 12-hour format without leading zeros. | '1' to '12' |
| G | Hour, 24-hour format without leading zeros. | '0' to '23' |
| h | Hour, 12-hour format. | '01' to '12' |
| H | Hour, 24-hour format. | '00' to '23' |
| i | Minutes. | '00' to '59' |
| I | Daylight Savings Time, whether it’s in effect or not. | '1' or '0' |
| j | Day of the month without leading zeros. | '1' to '31' |
| l | Day of the week, textual, long. | 'Friday' |
| L | Boolean for whether it’s a leap year. | True or False |
| m | Month, 2 digits with leading zeros. | '01' to '12' |
| M | Month, textual, 3 letters. | 'Jan' |
| n | Month without leading zeros. | '1' to '12' |
| N | Month abbreviation in Associated Press style. Proprietary extension. | 'Jan.', 'Feb.', 'March', 'May' |
| o | ISO-8601 week-numbering year, corresponding to the ISO-8601 week number (W) which uses leap weeks. See Y for the more common year format. | '1999' |
| O | Difference to Greenwich time in hours. | '+0200' |
| P | Time, in 12-hour hours, minutes and ‘a.m.’/’p.m.’, with minutes left off if they’re zero and the special-case strings ‘midnight’ and ‘noon’ if appropriate. Proprietary extension. | '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30p.m.' |
| r | RFC 5322 formatted date. | 'Thu, 21 Dec 2000 16:01:07 +0200' |
| s | Seconds, 2 digits with leading zeros. | '00' to '59' |
| S | English ordinal suffix for day of the month, 2 characters. | 'st', 'nd', 'rd' or 'th' |
| t | Number of days in the given month. | 28 to 31 |
| T | Time zone of this machine. | 'EST', 'MDT' |
| u | Microseconds. | 000000 to 999999 |
| U | Seconds since the Unix Epoch (January 1 1970 00:00:00 UTC). | |
| w | Day of the week, digits without leading zeros. | '0' (Sunday) to '6' (Saturday) |
| W | ISO-8601 week number of year, with weeks starting on Monday. | 1, 53 |
| y | Year, 2 digits. | '99' |
| Y | Year, 4 digits. | '1999' |
| z | Day of the year. | 0 to 365 |
| Z | Time zone offset in seconds. The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. | -43200 to 43200 |
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看到脑壳痛。。。