Python for Finance

Chapter 1
n=len(f)
f1=np.reshape(f,[n/4,4])
ff=pd.DataFrame(f1,index=index,columns=['Mkt_Rf','SMB','HML','Rf'])
To view the first and last few observations for the dataset called ff, the functions of
.head() and .tail() can be used:
Data output
The simplest example is given here:
>>>f=open("c:/temp/out.txt","w")
>>>x="This is great"
>>>f.write(x)
>>>f.close()
For the next example, we download historical stock price data first, then write data
to an output file:
import re
from matplotlib.finance import quotes_historical_yahoo_ochl
ticker='dell'
outfile=open("c:/temp/dell.txt","w")
begdate=(2013,1,1)
enddate=(2016,11,9)
p=quotes_historical_yahoo_ochl
(ticker,begdate,enddate,asobject=True,adjusted=True)
outfile.write(str(p))
outfile.close()
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