How do I automatically download files from a pop up dialog using selenium-python

Question

I am trying to automatically download files from a pop up dialog using selenium-python.

The firefox popups look like this

Answer 1

Based on Amey's answer 1) and of course Yi Zeng's blog (in ruby) quoting Selenium itself doesn’t interact with system-level dialogs like this as well as the documentation, here is the python snippet to resolve the issue

from selenium import webdriver
from selenium.webdriver.firefox.firefox_profile import FirefoxProfile

profile = FirefoxProfile()
profile.set_preference("browser.helperApps.neverAsk.saveToDisk", 'application/pdf')
driver = webdriver.Firefox(firefox_profile=profile)

driver.get(target_url)
#specific to target_url
driver.find_element_by_css_selector('a[title="Click to Download"]').click()