"""
for cookies use 'delete_all_cookies()' function

>>> driver.delete_all_cookies()

for cache create profile
"""
profile = webdriver.FirefoxProfile()
profile.set_preference("browser.cache.disk.enable", False)
profile.set_preference("browser.cache.memory.enable", False)
profile.set_preference("browser.cache.offline.enable", False)
profile.set_preference("network.http.use-cache", False) 
driver =webdriver.Firefox(profile)