Pandas 读取数据帧而不是面板
我想同时看几份股票行情。我正在使用:Pandas 读取数据帧而不是面板,pandas,pandas-datareader,Pandas,Pandas Datareader,我想同时看几份股票行情。我正在使用: import numpy as np import pandas as pd import pandas_datareader.data as web import datetime import matplotlib.pyplot as plt %matplotlib inline start = datetime.datetime(2017, 9, 20) end = datetime.datetime(2017,9,22) h = web.DataRe
import numpy as np
import pandas as pd
import pandas_datareader.data as web
import datetime
import matplotlib.pyplot as plt
%matplotlib inline
start = datetime.datetime(2017, 9, 20)
end = datetime.datetime(2017,9,22)
h = web.DataReader(["EWI", "EWG"], "yahoo", start, end)
。。。这似乎奏效了。
但是,数据被读入面板数据结构。如果我打印变量“h”,我会得到:
尺寸:6(项目)x 4(长轴)x 2(短轴)
项目轴:调整接近体积
长轴:2017-09-22 00:00:00至2017-09-19 00:00:00
短_轴:EWG至EWI
我想:
数据帧
:
#with random data
df = h.to_frame()
print (df)
Adj Close Close High Low Open Volume
major minor
2013-01-01 EWI 0.471435 0.471435 0.471435 0.471435 0.471435 0.471435
EWG -1.190976 -1.190976 -1.190976 -1.190976 -1.190976 -1.190976
2013-01-02 EWI 1.432707 1.432707 1.432707 1.432707 1.432707 1.432707
EWG -0.312652 -0.312652 -0.312652 -0.312652 -0.312652 -0.312652
2013-01-03 EWI -0.720589 -0.720589 -0.720589 -0.720589 -0.720589 -0.720589
EWG 0.887163 0.887163 0.887163 0.887163 0.887163 0.887163
2013-01-04 EWI 0.859588 0.859588 0.859588 0.859588 0.859588 0.859588
EWG -0.636524 -0.636524 -0.636524 -0.636524 -0.636524 -0.636524
然后选择列:
s = df['Adj Close']
print (s)
major minor
2013-01-01 EWI 0.471435
EWG -1.190976
2013-01-02 EWI 1.432707
EWG -0.312652
2013-01-03 EWI -0.720589
EWG 0.887163
2013-01-04 EWI 0.859588
EWG -0.636524
Name: Adj Close, dtype: float64
df1 = df[['Adj Close']]
print (df1)
Adj Close
major minor
2013-01-01 EWI 0.471435
EWG -1.190976
2013-01-02 EWI 1.432707
EWG -0.312652
2013-01-03 EWI -0.720589
EWG 0.887163
2013-01-04 EWI 0.859588
EWG -0.636524
注意:
未来的
面板将是。你好,耶兹雷尔,它确实帮助很大。然而,我会先得到最新的约会,而你会最后得到。长轴:2017-09-22 00:00:00到2017-09-19 00:00:00有什么想法为什么会发生在我身上?
s = df['Adj Close']
print (s)
major minor
2013-01-01 EWI 0.471435
EWG -1.190976
2013-01-02 EWI 1.432707
EWG -0.312652
2013-01-03 EWI -0.720589
EWG 0.887163
2013-01-04 EWI 0.859588
EWG -0.636524
Name: Adj Close, dtype: float64
df1 = df[['Adj Close']]
print (df1)
Adj Close
major minor
2013-01-01 EWI 0.471435
EWG -1.190976
2013-01-02 EWI 1.432707
EWG -0.312652
2013-01-03 EWI -0.720589
EWG 0.887163
2013-01-04 EWI 0.859588
EWG -0.636524