Google code closure lead this script here. Gives an iterator over google search results.

GoogleSearch_0.3.py

#!/usr/bin/env python

## DESCRIPTION
##    The script provides an iterator over the search results returned by google, after giving a query.
##
## EXAMPLES
##    TODO: Show some examples of how to use this script.
##
## EXIT STATUS
##    No exit statuses provided. The class simply returns an iterator over the results. Only error raised is the StopIteration.
##
## AUTHOR
##    Ayush Goel <ayushgoel111@gmail.com>
##
## LICENSE
##    GPL v3 used
##    uploaded on code http://code.google.com/p/google-search-iter/
##    This script is in the public domain, free from copyrights or restrictions.
##    Please revert back if you make any updations or changes useful to others too. I would add the changes to the original script.
##
## VERSION
##    0.1

import mechanize

class GoogleIter():

    def __init__(self,query):
        """create the iterator by giving a query term"""
        self.query=query
        self.link_no=-1
        self.links_end=False
        
    def find_next_link_ini(self):
        """ this function is not to be used externally.\n It is called internally when the iterator is being formed initially."""

        try:
            self.br=mechanize.Browser()

            # Browser options
            self.br.set_handle_equiv(True)
            self.br.set_handle_gzip(True) #experimental! Shows a warning which should be neglected..
            self.br.set_handle_redirect(True)
            self.br.set_handle_referer(True)
            self.br.set_handle_robots(False)

            # Want debugging messages?
            #self.br.set_debug_http(True)
            #self.br.set_debug_redirects(True)
            #self.br.set_debug_responses(True)

            # User-Agent (this is cheating, ok?)
            # Here we customize our emulated browser to pose as it is the firefox browser.
            self.br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]

            self.br.open("http://www.google.co.in")
        except UserWarning:
            pass


        self.br.select_form(nr=0)
        self.br.form['q']=self.query
        self.br.submit()
        list_links=list(self.br.links())

        ret_links=[]
        changed=False  ## this acts like a flag to check if this is the last page, and the results are going to end after this.
##        for i in range(len(list_links)):
##            if list_links[i].text=='Cached':
##                ret_links.append(list_links[i-1])
##            elif list_links[i].text=='Next':
##                changed=1
##                self.following_link=list_links[i]
##        if changed==0:
##            self.links_end=True
##        
        for i in range(len(list_links)):
            if list_links[i].text=='Cached':
                if list_links[i-1].text=='Translate this page':
                    ret_links.append(list_links[i-2])
                    print list_links[i-2].text
                else:
                    ret_links.append(list_links[i-1])
            elif list_links[i].text=='Similar' and list_links[i-1].text!='Cached':
                ret_links.append(list_links[i-1])
                print list_links[i-1].text
            elif list_links[i].text=='Next':
                changed=True
                self.following_link=list_links[i]

        if changed==False:
            self.links_end=True


        return ret_links

        ## self.br.follow_link(following_link)
        ## follow the google results to next page..

    def find_next_link_list(self):
        """ This function is not available externally.
        This is the function that returns the links one by one to the iterator object."""
        
        self.br.follow_link(self.following_link)
        list_links=list(self.br.links())
        ret_links=[]
        changed=False

        for i in range(len(list_links)):
            if list_links[i].text=='Cached':
                if list_links[i-1].text=='Translate this page':
                    ret_links.append(list_links[i-2])
                    print list_links[i-2].text
                else:
                    ret_links.append(list_links[i-1])
            elif list_links[i].text=='Similar' and list_links[i-1].text!='Cached':
                ret_links.append(list_links[i-1])
                print list_links[i-1].text
            elif list_links[i].text=='Next':
                changed=True
                self.following_link=list_links[i]

        if changed==False:
            self.links_end=True

        return ret_links


    def find_next_link(self):
        if self.link_no==-1:
            self.link_list=self.find_next_link_ini()
            self.link_no=0
            self.link_limit=len(self.link_list)

        elif self.link_no>=self.link_limit:
            self.link_list=self.find_next_link_list()
            self.link_limit=len(self.link_list)
            self.link_no=0

        self.link_no+=1
        return self.link_list[self.link_no-1]


    def __iter__(self):
        """ this method is called when we use iter(xxx)"""
        self.link=self.find_next_link()
        return self

    def next(self):
        """the iterator's next() method definition"""
        if self.links_end==True and self.link_no==self.link_limit :
            raise StopIteration
        return self.find_next_link()


if __name__=='__main__':
    ##if the script is executed as a standalone.
    
    query=raw_input("Enter the searh term: ")
    google_iter=GoogleIter(query)
    print "An iterator named google_iter has been created"