pandas中Timestamp類用法講解
阿新 • • 發佈:2019-02-03
由於網上關於Timestamp類的資料比較少,而且官網上面介紹的很模糊,本文只是對如何建立Timestamp類物件進行簡要介紹,詳情請讀者自行查閱文件。
以下有兩種方式可以建立一個Timestamp物件:
1. Timestamp()的構造方法
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)
輸出:
('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
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)
輸出:
('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