由于网上关于Timestamp类的资料比较少,而且官网上面介绍的很模糊,本文只是对如何创建Timestamp类对象进行简要介绍,详情请读者自行查阅文档。
以下有两种方式可以创建一个Timestamp对象:
1. Timestamp()的构造方法
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import pandas as pd from datetime import datetime as dt p1 = pd.Timestamp( 2017 , 6 , 19 ) p2 = pd.Timestamp(dt( 2017 , 6 , 19 ,hour = 9 ,minute = 13 ,second = 45 )) p3 = pd.Timestamp( "2017-6-19 9:13:45" ) print ( "type of p1:" , type (p1)) print (p1) print ( "type of p2:" , type (p2)) print (p2) print ( "type of p3:" , type (p3)) print (p3) |
输出:
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( 'type of p1:' , < class 'pandas.tslib.Timestamp' >) 2017 - 06 - 19 00 : 00 : 00 ( 'type of p2:' , < class 'pandas.tslib.Timestamp' >) 2017 - 06 - 19 09 : 13 : 45 ( 'type of p3:' , < class 'pandas.tslib.Timestamp' >) 2017 - 06 - 19 09 : 13 : 45 |
2. to_datetime()方法
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import pandas as pd from datetime import datetime as dt p4 = pd.to_datetime( "2017-6-19 9:13:45" ) p5 = pd.to_datetime(dt( 2017 , 6 , 19 ,hour = 9 ,minute = 13 ,second = 45 )) print ( "type of p4:" , type (p4)) print (p4) print ( "type of p5:" , type (p5)) print (p5) |
输出:
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( 'type of p4:' , < class 'pandas.tslib.Timestamp' >) 2017 - 06 - 19 09 : 13 : 45 ( 'type of p5:' , < class 'pandas.tslib.Timestamp' >) 2017 - 06 - 19 09 : 13 : 45 |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://blog.csdn.net/csdn15698845876/article/details/73456967