Python语言学习：时间日期格式化
记录一些python里的时间日期格式化操作
常用格式化介绍
| 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). All days in a new year preceding the first Sunday are considered to be in week 0. | 00, 01, ..., 53 |
%W | Week number of the year (Monday as the first day of the week). All days in a new year preceding the first Monday are considered to be in week 0. | 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. | % |
用 datetime 的 strftime 完成时间格式化
from datetime import datetime
now = datetime.now() # current date and time
year = now.strftime("%Y")
print("year:", year)
month = now.strftime("%m")
print("month:", month)
day = now.strftime("%d")
print("day:", day)
time = now.strftime("%H:%M:%S")
print("time:", time)
date_time = now.strftime("%m/%d/%Y, %H:%M:%S")
print("date and time:",date_time)也可以用 timestamp 来完成上述操作
Creating string from a timestamp
from datetime import datetime
timestamp = 1528797322
date_time = datetime.fromtimestamp(timestamp)
print("Date time object:", date_time)
d = date_time.strftime("%m/%d/%Y, %H:%M:%S")
print("Output 2:", d)
d = date_time.strftime("%d %b, %Y")
print("Output 3:", d)
d = date_time.strftime("%d %B, %Y")
print("Output 4:", d)
d = date_time.strftime("%I%p")
print("Output 5:", d)