在Python中,日期和时间不是其自身的数据类型,而是名为datetime
可以导入以处理日期和时间。 Datetime模块内置于Python中,因此无需在外部安装它。 Python中的datetime模块为类提供了许多处理日期和时间的函数。
strftime()函数用于将日期和时间对象转换为其字符串表示形式。它需要一个或多个格式化代码输入,并返回字符串表示形式。
用法:
strftime(format)
返回值:它返回日期或时间对象的字符串表示形式。
格式代码列表:格式代码参考表。
指示 | 含义 | 输出格式 |
---|---|---|
%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 added 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 added decimal number. | 01, 02, …, 12 |
%-m | Month as a decimal number. | 1, 2, …, 12 |
%y | Year without century as a zero added 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 added 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 added 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 added decimal number. | 00, 01, …, 59 |
%-M | Minute as a decimal number. | 0, 1, …, 59 |
%S | Second as a zero added decimal number. | 00, 01, …, 59 |
%-S | Second as a decimal number. | 0, 1, …, 59 |
%f | Microsecond as a decimal number, zero added 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 added 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 |
例:
# Python program to demonstrate
# strftime() function
from datetime import datetime as dt
# Getting current date and time
now = dt.now()
print("Without formatting", now)
# Example 1
s = now.strftime("%a %m %y")
print('\nExample 1:', s)
# Example 2
s = now.strftime("%A %-m %Y")
print('\nExample 2:', s)
# Example 3
s = now.strftime("%-I %p %S")
print('\nExample 3:', s)
# Example 4
s = now.strftime("%-j")
print('\nExample 4:', s)
输出:
Without formatting 2019-12-17 18:21:39.211378 Example 1:Tue-12-19 Example 2:Tuesday-12-2019 Example 3:6 PM 39 Example 4:351
相关用法
- Python time.strftime()用法及代码示例
- Python Pandas Series.dt.strftime用法及代码示例
- Python Pandas Period.strftime用法及代码示例
- Python Pandas PeriodIndex.strftime用法及代码示例
- Python Pandas DatetimeIndex.strftime()用法及代码示例
- Python dir()用法及代码示例
- Python sum()用法及代码示例
- Python tell()用法及代码示例
- Python hex()用法及代码示例
- Python now()用法及代码示例
- Python cmp()用法及代码示例
- Python oct()用法及代码示例
- Python id()用法及代码示例
注:本文由纯净天空筛选整理自iamvineettiwari012大神的英文原创作品 Python strftime() function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。