Difference between revisions of "Stocks/get prices"

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m (I don't think Session( ) should ignore the lock file in this instance.)
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= This document explains how to import historic stock quotes into gnucash =
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== Overview ==
  
Some knowledge of perl and python is required. This example uses GnuCash's [[Python Bindings]]. Ensure that both perl and python are available.
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This document presents one way to import historic stock quotes into GnuCash. This example uses GnuCash's [[Python Bindings]].  
  
To run the scripts below you need a gnucash xml file named "test.gnucash". For illustration, we show how to get prices for an account named Intel that contains shares of the INTC stock.  The method for adding the INTC stock to Gnucash is explained here [[stocks/add_stock|Add stock to portfolio]]. You have additionally to add one price of INTC into the database by hand.
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'''Some knowledge of Perl and Python is required.'''
 +
 
 +
Ensure that both Perl and Python are available. You will also need to install the special Perl module  [http://www.mojotoad.com/sisk/projects/Finance-QuoteHist/ Finance::QuoteHist] and its dependencies.
 +
 
 +
To run the scripts below you need a GnuCash xml file named "test.gnucash". For illustration, we show how to get prices for an account named Intel that contains shares of the INTC stock.  The method for adding the INTC stock to your GnuCash file is explained here [[stocks/add_stock|Add stock to portfolio]]. In addition, you have to add one price of INTC into the database by hand.
  
 
== Get the data ==
 
== Get the data ==
  
We get the data with the perl module [http://www.mojotoad.com/sisk/projects/Finance-QuoteHist/ Finance::QuoteHist]. A sample perl script to get the quotes is as follows:
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We will get the data with Finance::QuoteHist and store it in a text file. The Perl script to get the quotes is as follows:
  
 
  #!/usr/bin/perl -w
 
  #!/usr/bin/perl -w
Line 41: Line 45:
  
  
== Import the data into Gnucash ==
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== Import the data into GnuCash ==
  
The following python script will read the text file "INTC" and add the prices to the Gnucash file "test.gnucash".
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The following python script will read the text file "INTC" and add the prices to the GnuCash file "test.gnucash".
  
 
  from gnucash import Session, Account, Split
 
  from gnucash import Session, Account, Split
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  session.destroy()
 
  session.destroy()
  
You now have the stock quotes from Intel in your Gnucash file!
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You now have the stock quotes from Intel in test.gnucash.
 
 
== Further Information ==
 
 
 
* [[Python Bindings]] in this Wiki.
 
* [http://svn.gnucash.org/docs/HEAD/python_bindings_page.html python-bindings] in [[doxygen]] source-documentation
 

Revision as of 08:51, 28 July 2017

Overview

This document presents one way to import historic stock quotes into GnuCash. This example uses GnuCash's Python Bindings.

Some knowledge of Perl and Python is required.

Ensure that both Perl and Python are available. You will also need to install the special Perl module Finance::QuoteHist and its dependencies.

To run the scripts below you need a GnuCash xml file named "test.gnucash". For illustration, we show how to get prices for an account named Intel that contains shares of the INTC stock. The method for adding the INTC stock to your GnuCash file is explained here Add stock to portfolio. In addition, you have to add one price of INTC into the database by hand.

Get the data

We will get the data with Finance::QuoteHist and store it in a text file. The Perl script to get the quotes is as follows:

#!/usr/bin/perl -w
use Finance::QuoteHist;
print "Will get stock quotes of $ARGV[0] and save it into the file $ARGV[0]\n";
$fname = $ARGV[0];
   open (MYFILE, ">$fname");
   $q = Finance::QuoteHist->new
      (
       symbols    => [($ARGV[0])],
       start_date => '01/01/2000',
       end_date   => 'today',
      ); 


print "name,date, open, high, low, close, volume\n";
foreach $row ($q->quotes()) {
       ($name,$date, $open, $high, $low, $close, $volume) = @$row;
       print MYFILE "$name,$date, $open, $high, $low, $close, $volume\n";
   }

close(MYFILE);


On Unix/Linux, save the program text (above) into a file (e.g., get_quotes), make the script executable by running "chmod a+x get_quotes". Execute it with the argument INTC to get the Intel prices saved into the file INTC % chmod a+x get_quotes % ./get_quotes INTC

The INTC file should look similar to this:

INTC,2000/01/03, 83.2700, 87.3700, 83.2500, 87.0000, 57710200
INTC,2000/01/04, 85.4400, 87.8700, 82.2500, 82.9400, 51019600
INTC,2000/01/05, 83.0000, 85.8700, 80.5000, 83.6200, 52389000


Import the data into GnuCash

The following python script will read the text file "INTC" and add the prices to the GnuCash file "test.gnucash".

from gnucash import Session, Account, Split
import gnucash
import datetime
from fractions import Fraction

FILE = "./test.gnucash"
url = "xml://"+FILE

# Read data from file
f = open('INTC')
data = []
while 1:
    tmp = f.readline()
    if(len(tmp)<2):
        break
    
    data.append(tmp)

f.close()

stock_date = []
stock_price = []
for i in range(1,len(data)):
    year = int(data[i].rsplit(',')[1].rsplit('/')[0])
    month = int(data[i].rsplit(',')[1].rsplit('/')[1])
    day = int(data[i].rsplit(',')[1].rsplit('/')[2])
    stock_date.append(datetime.datetime(year,month,day))
    stock_price.append(float(data[i].rsplit(',')[5]))

# Initialize Gnucash session
session = Session(url, False, False, False)
root = session.book.get_root_account()
book = session.book
account = book.get_root_account()
pdb = book.get_price_db()
commod_table = book.get_table()
stock = commod_table.lookup('NASDAQ', 'INTC')
cur = commod_table.lookup('CURRENCY', 'USD')
# Add the prices
pdb = book.get_price_db()
# Get stock data
pl = pdb.get_prices(stock,cur)
if len(pl)<1:
  print 'Need at least one database entry to clone ...'

pl0 = pl[0]
for i in range(1,len(pl)):
  pdb.remove_price(pl[i])

for i in range(0,len(stock_date)):
  p_new = pl0.clone(book)
  p_new = gnucash.GncPrice(instance=p_new)
  print 'Adding',i,stock_date[i],stock_price[i]
  p_new.set_time(stock_date[i])
  v = p_new.get_value()
  v.num = int(Fraction.from_float(stock_price[i]).limit_denominator(100000).numerator)
  v.denom = int(Fraction.from_float(stock_price[i]).limit_denominator(100000).denominator)
  p_new.set_value(v)
  pdb.add_price(p_new)

# Clean up
session.save()
session.end()
session.destroy()

You now have the stock quotes from Intel in test.gnucash.