Python 将时区信息附加到数据帧的日期时间索引

Question

我的数据框在 EST 中有日期时间索引。但是此信息未附加到日期时间索引。我如何附加它？

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'],
              dtype='datetime64[ns]', name='Unnamed: 0', length=6, freq=None)

Answer 1

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)

Python 将时区信息附加到数据帧的日期时间索引

Python Append Timezone info to the datetime index of dataframe

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