Python：为pandas timestamp增加小时数

我将csv文件读入pandas dataframe df,我得到以下内容：

df.columns
Index([u'TDate', u'Hour', u'SPP'], dtype='object')
>>> type(df['TDate'][0])
<class 'pandas.tslib.Timestamp'>

type(df['Hour'][0])
<type 'numpy.int64'>

>>> type(df['TradingDate'])
<class 'pandas.core.series.Series'>
>>> type(df['Hour'])
<class 'pandas.core.series.Series'>

Hour和TDate列都有100个元素.我想将Hour的相应元素添加到TDate中.

我尝试了以下方法：

import pandas as pd
from datetime import date, timedelta as td
z3 = pd.DatetimeIndex(df['TDate']).to_pydatetime() + td(hours = df['Hour'])

但我得到错误,因为似乎td不接受数组作为参数.如何将Hour的每个元素添加到TDate的相应元素中.

解决方法:

我想你可以添加到列TDate列Hour转换to_timedelta with unit =’h’：

df = pd.DataFrame({'TDate':['2005-01-03','2005-01-04','2005-01-05'],
                   'Hour':[4,5,6]})

df['TDate'] = pd.to_datetime(df.TDate)
print (df)
   Hour      TDate
0     4 2005-01-03
1     5 2005-01-04
2     6 2005-01-05

df['TDate'] +=  pd.to_timedelta(df.Hour, unit='h')
print (df)
   Hour               TDate
0     4 2005-01-03 04:00:00
1     5 2005-01-04 05:00:00
2     6 2005-01-05 06:00:00