56 lines
1.8 KiB
Markdown
56 lines
1.8 KiB
Markdown
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# 如何在 Python 中使用日期和时间
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> 原文：<https://www.pythonforbeginners.com/basics/python-datetime-time-examples>
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## 日期和时间
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这篇文章将展示一些使用 Pythons 日期时间和时间模块的例子。
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在之前的一篇文章[Python 中的基本日期和时间类型](https://www.pythonforbeginners.com/basics/python-strftime-and-strptime)中，我写道，datetime 和 time 对象都支持 strftime(format)方法来创建一个在显式格式字符串控制下表示时间的字符串。
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## 日期和时间示例
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让我们看看可以用 Python 中的 datetime 和 time 模块做些什么
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```py
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import time
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import datetime
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print "Time in seconds since the epoch: %s" %time.time()
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print "Current date and time: " , datetime.datetime.now()
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print "Or like this: " ,datetime.datetime.now().strftime("%y-%m-%d-%H-%M")
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print "Current year: ", datetime.date.today().strftime("%Y")
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print "Month of year: ", datetime.date.today().strftime("%B")
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print "Week number of the year: ", datetime.date.today().strftime("%W")
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print "Weekday of the week: ", datetime.date.today().strftime("%w")
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print "Day of year: ", datetime.date.today().strftime("%j")
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print "Day of the month : ", datetime.date.today().strftime("%d")
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print "Day of week: ", datetime.date.today().strftime("%A")
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```
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## 输出
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它会打印出这样的内容:
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```py
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Time in seconds since the epoch: 1349271346.46
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Current date and time: 2012-10-03 15:35:46.461491
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Or like this: 12-10-03-15-35
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Current year: 2012
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Month of year: October
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Week number of the year: 40
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Weekday of the week: 3
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Day of year: 277
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Day of the month : 03
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Day of week: Wednesday
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```
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获取某个日期的星期几(你的宠物的生日)。
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```py
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import datetime
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mydate = datetime.date(1943,3, 13) #year, month, day
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print(mydate.strftime("%A"))
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```
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