Python将时区信息附加到数据框的日期时间索引

编程问答 2022-06-11

问题描述

我的数据框在EST中有日期时间索引。但是，此信息不会附加到datetime索引中。我该如何追加？

我的代码：

df.index = 
DatetimeIndex(['2019-10-01 07:49:28','2019-10-01 07:50:21','2020-07-25 18:48:44','2020-07-25 18:49:43','2020-07-25 18:50:43','2020-07-25 18:51:44'],dtype='datetime64[ns]',name='Unnamed: 0',length=6,freq=None)
df.index = df.index.replace(tzinfo='EST')

当前输出：

    df.index.replace(tzinfo='EST')

AttributeError: 'DatetimeIndex' object has no attribute 'replace'

预期输出：

df.index = 
DatetimeIndex(['2019-10-01 07:49:28-05:00','2019-10-01 07:50:21-05:00','2020-07-25 18:48:44-05:00','2020-07-25 18:49:43-05:00','2020-07-25 18:50:43-05:00','2020-07-25 18:51:44-05:00'],freq=None)

解决方法

使用.tz_localize添加时区

itx = pd.DatetimeIndex(['2019-10-01 07:49:28','2019-10-01 07:50:21','2020-07-25 18:48:44','2020-07-25 18:49:43','2020-07-25 18:50:43','2020-07-25 18:51:44'],dtype='datetime64[ns]',name='Unnamed: 0')

itx = itx.tz_localize(tz='EST')

Out[285]:
DatetimeIndex(['2019-10-01 07:49:28-05:00','2019-10-01 07:50:21-05:00','2020-07-25 18:48:44-05:00','2020-07-25 18:49:43-05:00','2020-07-25 18:50:43-05:00','2020-07-25 18:51:44-05:00'],dtype='datetime64[ns,EST]',name='Unnamed: 0',freq=None)
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