Python标准库系列之datetime模块
Fast implementation of the datetime type.
| 功能 | 说明 |
|---|---|
| datetime.date.today() | 打印输出当前的系统日期 |
| datetime.date.fromtimestamp(time.time()) | 将时间戳转成日期格式 |
| datetime.datetime.now() | 打印当前的系统时间 |
| current_time.replace(2016,5,12) | 返回当前时间,但指定的值将被替换 |
| datetime.datetime.strptime(“21/11/06 16:30”, “%d/%m/%y %H:%M”) | 将字符串转换成日期格式 |
输出当前系统时间
-
>>> print(datetime.date.today()) 2016-05-25
将时间戳格式转换为日期格式
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>>> time.time() # 时间戳格式 1464156222.1887317 >>> print(datetime.date.fromtimestamp(time.time())) # 日期格式 2016-05-25
将日期格式转换为struct_time格式
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>>> current_time = datetime.datetime.now() >>> print(current_time) 2016-05-25 14:05:26.706667 >>> print(current_time.timetuple()) # 返回struct_time格式 time.struct_time(tm_year=2016, tm_mon=5, tm_mday=25, tm_hour=14, tm_min=5, tm_sec=26, tm_wday=2, tm_yday=146, tm_isdst=-1)
替换当前系统时间
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>>> print(current_time.replace(2016,5,12)) 2016-05-12 14:05:26.706667
将字符串转换成日期格式
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>>> str_to_date = datetime.datetime.strptime("21/11/06 16:30", "%d/%m/%y %H:%M") >>> print(str_to_date) 2006-11-21 16:30:00
时间相加减
比现在加10天
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>>> new_date = datetime.datetime.now() + datetime.timedelta(days=10) >>> print(new_date) 2016-06-04 14:10:36.119523
比现在减10天
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>>> new_date = datetime.datetime.now() + datetime.timedelta(days=-10) >>> print(new_date) 2016-05-15 14:11:06.739814
比现在减10小时
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>>> new_date = datetime.datetime.now() + datetime.timedelta(hours=-10) >>> print(new_date) 2016-05-25 04:11:44.095624
比现在+120s
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>>> new_date = datetime.datetime.now() + datetime.timedelta(seconds=120) >>> print(new_date) 2016-05-25 14:14:02.090219
时间： 2024-10-09 22:57:28