for link in dom.xpath('//div[@id="right-column"]//a/@href'):
    FINAL_URL = urlparse.urljoin(url, link)

my_page = '//div[@class="product_info"]//table//tr[7]//td[2]//a/@href'

    for link1 in dom1.xpath(my_page):
    # more code to go

for link1 in dom1.xpath(my_page):
        if link1[:4] == 'http':
            driver.get(link1)
            inputElement = driver.find_element_by_xpath("//input​[@*[contains(., 'name')]]")
            inputElement.send_keys("somename")
            inputElement1 = driver.find_element_by_xpath("//input​[@*[contains(., 'email')]]")
            inputElement1.send_keys("email@yahoo.com")
            inputElement1.send_keys(Keys.ENTER)
            assert "No results found." not in driver.page_source

line 38, in <module>
inputElement = driver.find_element(By.XPATH, "//input​[@*[contains(., 'name')]]")
 File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 707, in find_element
{'using': by, 'value': value})['value']
selenium.common.exceptions.InvalidSelectorException

# -*- coding: utf-8 -*-

import urlparse
import lxml.html



from selenium import webdriver
from selenium.webdriver.common.keys import Keys

from pyvirtualdisplay import Display

display = Display(visible=0, size=(800, 600))
display.start()

driver = webdriver.Firefox()


URL = 'http://example.com'
dom = lxml.html.parse(URL)
url = dom.docinfo.URL
BASE = dom.find('head/base')
EMPTY = ''

if BASE:
    url = BASE.get('href', url)

for link in dom.xpath('//div[@id="right-column"]//a/@href'):
    FINAL_URL = urlparse.urljoin(url, link)

    dom1 = lxml.html.parse(FINAL_URL)
    my_page = '//div[@class="product_info"]//table//tr[7]//td[2]//a/@href'

    for link1 in dom1.xpath(my_page):
        if link1[:4] == 'http':
            driver.get(link1)
            inputElement = driver.find_element_by_xpath("//input​[@*[contains(., 'name')]]")
            inputElement.send_keys("cevanume")
            inputElement1 = driver.find_element_by_xpath("//input​[@*[contains(., 'email')]]")
            inputElement1.send_keys("email@yahoo.com")
            inputElement1.send_keys(Keys.ENTER)
            assert "No results found." not in driver.page_source

driver.close()