matplotlib Code

#!/usr/bin/env python

from matplotlib.ticker import MultipleLocator
from pylab import *
from data_helper import get_two_stock_data

d1, p1, d2, p2 = get_two_stock_data()

ax = subplot(111)
lines = plot(d1, p1, 'bs', d2, p2, 'go')
xlabel('Days')
ylabel('Normalized price')
xlim(0, 3)
ax.xaxis.set_major_locator(MultipleLocator(1))

title('INTC vs AAPL')
legend( ('INTC', 'AAPL') )
#savefig('stock_demo')
show()