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我寫了一些非常簡單的線條:不正確的報價是超出範圍
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)
f = web.DataReader("EWI", "yahoo", start, end)
f
但是,我得到的答覆是「稍微」錯誤:
Open High Low Close Adj Close Volume
Date
2017-09-19 31.410000 31.520000 31.360001 31.490000 31.490000 477100
2017-09-20 31.410000 31.500000 31.209999 31.379999 31.379999 885500
2017-09-21 31.370001 31.480000 31.350000 31.430000 31.430000 739600
2017-09-22 31.469999 31.610001 31.469999 31.510000 31.510000 447300
我越來越2017-09-19沒有被要求的報價。
我錯過了什麼?