Python으로 코스피 지수 불러오기

import pandas_datareader as wb
import pandas as pd
import datetime
import matplotlib.pyplot as plt
 
pd.set_option('precision', 4)
 
start = datetime.datetime(2007, 1, 1)
end = datetime.datetime(2017, 10, 31)
df_null = wb.DataReader("^KS11","yahoo",start,end)
df = df_null.dropna()
 
kospi_chart = df.Close.plot(style='b')
kospi_chart.set_title("KOSPI")
kospi_chart.set_ylabel("Index")
kospi_chart.set_xlim(str(start), str(end))
 
print(df)
 
print("Close Median", df['Close'].median())
print(df['Close'].describe())
print(df.corr())
 
plt.show()