# web.py - can we read from the Web?
# If we go to a stock page on finance.yahoo.com, we can
# read a quote, which appears on a line that contains something
# like this, in the case of ibm:
# yfs_l10_ibm">101.37<
# Two situations we don't handle:
#   URLError in case the URL we have is malformed
#   Bad stock symbol - the page doesn't have a price in it.
import urllib2
import re

# Ask user for the stock symbol.  For this program to work, it
# needs to be in all lowercase letters, so convert.
stock = raw_input("Enter stock symbol")
stock = stock.lower()

page = urllib2.urlopen("http://finance.yahoo.com/q?s=" + stock)

for line in page:
    if line.count("yfs_l10_" + stock) > 0:
        # We have found the line containing the quote.
        # First, we chop off everything to the left of the quote.
        line = line[line.find("yfs_l10_"):]

        # Now we tokenize on the > and < and grab the 2nd token.
        toklist = re.compile("[<>]").split(line);
        price = toklist[1]
        print "The price of " + stock + " is " + price
        break