1 简单入门
1.1 获取当前时间
|
1
2
3
4
|
import datetime datetime_object = datetime.datetime.now()print(datetime_object) |
输出
2022-03-29 16:36:44.749582
Process finished with exit code 0
1.2 获取当前日期
|
1
2
3
4
|
import datetime date_object = datetime.date.today()print(date_object) |
输出
2022-03-29
Process finished with exit code 0
1.3 datetime中的类
|
1
2
3
|
import datetime print(dir(datetime)) |
输出
['MAXYEAR', 'MINYEAR', '__all__', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 'date', 'datetime', 'datetime_CAPI', 'sys', 'time', 'timedelta', 'timezone', 'tzinfo']
Process finished with exit code 0
2 datetime中的常用的类
- date类
- time类
- datetime类
- timedelta类
2.1 date类
（1）示例化date对象
|
1
2
3
4
|
import datetime d = datetime.date(2022, 3, 29)print(d) |
输出
2022-03-29
Process finished with exit code 0
（2）获取当前日期
|
1
2
3
4
5
|
from datetime import date today = date.today() print("当前日期 =", today) |
输出
当前日期 = 2022-03-29
Process finished with exit code 0
（3）从时间戳获取日期
我们还可以从时间戳创建日期对象。Unix时间戳是特定日期到UTC的1970年1月1日之间的秒数。可以使用fromtimestamp()方法将时间戳转换为日期。
|
1
2
3
4
|
from datetime import date timestamp = date.fromtimestamp(1576244364)print("日期 =", timestamp) |
输出
日期 = 2019-12-13
Process finished with exit code 0
（4）打印今天的年，月和日
|
1
2
3
4
5
6
7
8
|
from datetime import date # 今天的日期对象today = date.today() print("当前年:", today.year)print("当前月:", today.month)print("当前日:", today.day) |
输出
当前年: 2022
当前月: 3
当前日: 29
Process finished with exit code 0
2.2 time类
（1）从time类示例化的时间对象表示本地时间。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
from datetime import time # time(hour = 0, minute = 0, second = 0)a = time()print("a =", a) # time(hour, minute and second)b = time(11, 34, 56)print("b =", b) # time(hour, minute and second)c = time(hour = 11, minute = 34, second = 56)print("c =", c) # time(hour, minute, second, microsecond)d = time(11, 34, 56, 234566)print("d =", d) |
输出
a = 00:00:00
b = 11:34:56
c = 11:34:56
d = 11:34:56.234566
Process finished with exit code 0
（2）打印时，分，秒和微秒
|
1
2
3
4
5
6
7
8
|
from datetime import time a = time(11, 34, 56) print("小时=", a.hour)print("分钟=", a.minute)print("秒=", a.second)print("微秒=", a.microsecond) |
输出
小时= 11
分钟= 34
秒= 56
微秒= 0
Process finished with exit code 0
2.3 datetime类
（1）datetime模块有一个名为的dateclass类，可以包含来自date和time对象的信息。
|
1
2
3
4
5
6
7
8
9
|
from datetime import datetime #datetime(year, month, day)a = datetime(2019, 11, 28)print(a) # datetime(year, month, day, hour, minute, second, microsecond)b = datetime(2019, 11, 28, 23, 55, 59, 342380)print(b) |
输出
2019-11-28 00:00:00
2019-11-28 23:55:59.342380
Process finished with exit code 0
（2）打印年，月，时，分和时间戳
|
1
2
3
4
5
6
7
8
9
|
from datetime import datetime a = datetime(2022, 3, 29, 23, 55, 59, 342380)print("年 =", a.year)print("月 =", a.month)print("日 =", a.day)print("时 =", a.hour)print("份 =", a.minute)print("时间戳 =", a.timestamp()) |
输出
年 = 2022
月 = 3
日 = 29
时 = 23
份 = 55
时间戳 = 1648569359.34238
Process finished with exit code 0
2.4 datetime.timedelta类
（1）timedelta对象表示两个日期或时间之间的时差。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
from datetime import datetime, date t1 = date(year = 2018, month = 7, day = 12)t2 = date(year = 2017, month = 12, day = 23)t3 = t1 - t2print("t3 =", t3) t4 = datetime(year = 2018, month = 7, day = 12, hour = 7, minute = 9, second = 33)t5 = datetime(year = 2019, month = 6, day = 10, hour = 5, minute = 55, second = 13)t6 = t4 - t5print("t6 =", t6) print("type of t3 =", type(t3)) print("type of t6 =", type(t6)) |
输出
t3 = 201 days, 0:00:00
t6 = -333 days, 1:14:20
type of t3 = <class 'datetime.timedelta'>
type of t6 = <class 'datetime.timedelta'>
Process finished with exit code 0
（2）两个timedelta对象之间的时间差
|
1
2
3
4
5
6
7
|
from datetime import timedelta t1 = timedelta(weeks = 2, days = 5, hours = 1, seconds = 33)t2 = timedelta(days = 4, hours = 11, minutes = 4, seconds = 54)t3 = t1 - t2 print("t3 =", t3) |
输出
t3 = 14 days, 13:55:39
Process finished with exit code 0
到此这篇关于Python处理日期和时间的方法总结的文章就介绍到这了,更多相关Python日期时间处理内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！
原文链接：https://blog.csdn.net/weixin_46039719/article/details/123825160
