I want to refresh the page once at a time, but now it"s time to grab the last refreshed page after performing the refresh

class JavaScriptMiddleware (object):

@classmethod
def process_request(cls, request, spider):
    for i in range(3):
        driver = webdriver.PhantomJS()
        sleep(3)
        driver.get(request.url)
        body = driver.page_source
        driver.quit()
        return HtmlResponse(request.url, encoding="utf-8", body=body, request=request)