Python里面用来管理时间的模块有2个，分别是time模块和datetime模块，现在看看如何使用
首先看看time模块
例1
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import time
print(time.time()) #时间戳，1970年到现在的秒数
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1474347039.991068 |
例2
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print(time.ctime()) #当前系统时间字符串格式
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Tue Sep 20 14:50:39 2016
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例3
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print(time.ctime(time.time()-86400)) #根据时间戳算时间
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Mon Sep 19 14:50:39 2016
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例4
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#显示的是格林威治时间print(time.gmtime())
time_obj=time.gmtime()
print(time_obj.tm_year,time_obj.tm_mon)
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time.struct_time(tm_year=2016, tm_mon=9, tm_mday=20, tm_hour=4, tm_min=50, tm_sec=39, tm_wday=1, tm_yday=264, tm_isdst=0)
2016 9
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例5
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#显示本地时间print(time.localtime())
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time.struct_time(tm_year=2016, tm_mon=9, tm_mday=20, tm_hour=14, tm_min=50, tm_sec=39, tm_wday=1, tm_yday=264, tm_isdst=0)
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例6
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#必须传入一个时间对象的参数，把structure time转换成时间戳print(time.mktime(time_obj))
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1474311039.0 |
例7
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#延时多少秒time.sleep(4)
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例8
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#把时间对象转成字符串格式print(time.strftime("%Y-%m-%d %H:%M:%S",time_obj))
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2016-09-20 04:50:39
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例9
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#把字符串格式转换为时间对象tm=time.strptime("2016-05-10 15:04:20","%Y-%m-%d %H:%M:%S")
print(tm)
print(time.mktime(tm))
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time.struct_time(tm_year=2016, tm_mon=5, tm_mday=10, tm_hour=15, tm_min=4, tm_sec=20, tm_wday=1, tm_yday=131, tm_isdst=-1)
1462856660.0 |
接下来看看datetime模块
例1
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import datetime
print(datetime.date.today())#输出当前日期
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2016-09-20
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例2
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currenttime=datetime.datetime.now()#输出当前时间，最常用
print(currenttime)
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2016-09-20 14:50:44.018886
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例3
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#比当前时间加10天new_date=datetime.date.today()+datetime.timedelta(days=10)
print(new_date)
2016-09-30
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例4
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#比当前时间少1个小时new_date=datetime.datetime.now()+datetime.timedelta(hours=-1)
print(new_date)
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2016-09-20 13:50:44.018923
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例5
#直接替换
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print(currenttime.replace(2014,9,12))
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2014-09-12 14:50:44.018886
print(currenttime.replace(year=2015))
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2015-09-20 14:50:44.018886
time_obj=currenttime.replace(2015)
print(time_obj,type(time_obj))
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2015-09-20 14:50:44.018886 <class 'datetime.datetime'>
print(currenttime>time_obj)
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True |
本文转自 beanxyz 51CTO博客，原文链接：http://blog.51cto.com/beanxyz/1854443，如需转载请自行联系原作者