我有数据:
Symbol bid ask
Timestamp
2014-01-01 21:55:34.378000 EUR/USD 1.37622 1.37693
2014-01-01 21:55:40.410000 EUR/USD 1.37624 1.37698
2014-01-01 21:55:47.210000 EUR/USD 1.37619 1.37696
2014-01-01 21:55:57.963000 EUR/USD 1.37616 1.37696
2014-01-01 21:56:03.117000 EUR/USD 1.37616 1.37694
时间戳是GMT。有没有办法将其转换为东方?
当我这样做时注意:
data.index
我得到输出:
<class 'pandas.tseries.index.DatetimeIndex'>
[2014-01-01 21:55:34.378000, ..., 2014-01-01 21:56:03.117000]
Length: 5, Freq: None, Timezone: None
答案 0 :(得分:26)
将索引(使用tz_localize
)本地化为UTC(以使时间戳识别时区),然后转换为东方(使用tz_convert
):
import pytz
eastern = pytz.timezone('US/Eastern')
df.index = index.tz_localize(pytz.utc).tz_convert(eastern)
例如:
import pandas as pd
import pytz
index = pd.date_range('20140101 21:55', freq='15S', periods=5)
df = pd.DataFrame(1, index=index, columns=['X'])
print(df)
# X
# 2014-01-01 21:55:00 1
# 2014-01-01 21:55:15 1
# 2014-01-01 21:55:30 1
# 2014-01-01 21:55:45 1
# 2014-01-01 21:56:00 1
# [5 rows x 1 columns]
print(df.index)
# <class 'pandas.tseries.index.DatetimeIndex'>
# [2014-01-01 21:55:00, ..., 2014-01-01 21:56:00]
# Length: 5, Freq: 15S, Timezone: None
eastern = pytz.timezone('US/Eastern')
df.index = index.tz_localize(pytz.utc).tz_convert(eastern)
print(df)
# X
# 2014-01-01 16:55:00-05:00 1
# 2014-01-01 16:55:15-05:00 1
# 2014-01-01 16:55:30-05:00 1
# 2014-01-01 16:55:45-05:00 1
# 2014-01-01 16:56:00-05:00 1
# [5 rows x 1 columns]
print(df.index)
# <class 'pandas.tseries.index.DatetimeIndex'>
# [2014-01-01 16:55:00-05:00, ..., 2014-01-01 16:56:00-05:00]
# Length: 5, Freq: 15S, Timezone: US/Eastern
答案 1 :(得分:5)
最近(我认为是在2017年),一些日期时间功能已添加到熊猫中,并且是内置的。您可以使用tz_convert()
转换时区。如果您的数据列/索引不支持时区,则会收到警告,并应首先使用tz_localize
使数据时区可用。
df = pd.DataFrame({'Symbol': ['EUR/USD'] * 5,
'bid': [1.37622, 1.37624, 1.37619, 1.37616, 1.37616],
'ask': [1.37693, 1.37698, 1.37696, 1.37696, 1.37694]})
df.index = pd.to_datetime(['2014-01-01 21:55:34.378000',
'2014-01-01 21:55:40.410000',
'2014-01-01 21:55:47.210000',
'2014-01-01 21:55:57.963000',
'2014-01-01 21:56:03.117000'])
df.index = df.index.tz_localize('GMT')
df.index = df.index.tz_convert('America/New_York')
这对于日期时间列也类似:
df['column'] = df['column'].dt.tz_convert('America/New_York')
答案 2 :(得分:1)
要将EST时间转换为亚洲tz
df.index = data.index.tz_localize('EST')
df.index = data.index.tz_convert('Asia/Kolkata')
熊猫现在具有内置的tz转换功能。