How to close Headless Firefox after test execution using Selenium and Python

Question

I've been following this tutorial to learn how to use Selenium and I just successfully ran the following code:

from selenium.webdriver import Firefox
from selenium.webdriver.firefox.options import Options

opts = Options()opts.headless=True
assert opts.headless # Operating in headless mode
browser = Firefox(options=opts)browser.get('https://bandcamp.com')
browser.find_element_by_class('playbutton').click()

How do I ensure the headless Firefox is no longer running? I ran this code twice and now two songs are playing over each other. Any help is appreciated, I just want to make sure nothing is running in the background!

score 1 · Answer 1 · answered Jun 19 '20 at 21:40

Irespective of GUI based browser or headless browser, at the end of your test execution you should always invoke browser.quit() which calls the /shutdown endpoint and subsequently the WebDriver instance and the Browsing Context both are destroyed completely closing all the pages/tabs/windows.

So your effective code block will be:

# previous lines of code
browser.find_element_by_class('playbutton').click()
browser.quit()

You can find a detailed discussion in PhantomJS web driver stays in memory

However, in the rarest of the rare cases there may be residue instances of WebDriver e.g. ChromeDriver occupying the memory, in those cases you need to kill them with brute force before triggering the next test execution as follows:

Python Solution (Windows):

import os

os.system("taskkill /f /im geckodriver.exe /T")
os.system("taskkill /f /im chromedriver.exe /T")
os.system("taskkill /f /im IEDriverServer.exe /T")

Python Solution (Cross Platform):

import os
import psutil

PROCNAME = "geckodriver" # or chromedriver or IEDriverServer
for proc in psutil.process_iter():
    # check whether the process name matches
    if proc.name() == PROCNAME:
    proc.kill()

You can find a detailed discussion in Selenium : How to stop geckodriver process impacting PC memory, without calling driver.quit()?

liamsuma · Answer 2 · 2020-06-19T20:37:04.007

0

From the tutorial you shared:

Everything seems to be working. In order to prevent invisible headless browser instances from piling up on your machine, you close the browser object before exiting your Python session:

Try to do the following to see if your issues are fixed:

browser.close()
quit()

EDIT:

Let's straight this out. So based on your request, we currently have:

from selenium.webdriver import Firefox
from selenium.webdriver.firefox.options import Options
from selenium import webdriver # you need this to terminate program 

options = Options() 
options.headless = True

driver = webdriver.Firefox(options=options)

driver.get('https://bandcamp.com')

driver.find_element_by_class('playbutton').click()

ch = input('Do you want to quit the program y/n?')
if ch == 'y':
    driver.quit()
    print('The program is terminated')

Let me know if the solution doesn't work

edited Jun 19 '20 at 20:37

answered Jun 19 '20 at 20:17

liamsuma

156
4
19

Thank you! I'm sorry, I should have mentioned that I tried running the program with that at the end of it to no avail - Firefox is still open/running. – Christina Jun 19 '20 at 20:21
In that case, you need `driver` to terminate the program. I will edit it accordingly. @Christina – liamsuma Jun 19 '20 at 20:27
@Christina let me know if the edited still doesn't work – liamsuma Jun 19 '20 at 20:54

score 0 · Answer 3 · answered Jun 19 '20 at 20:20

0

Just add

browser.close()

Also you can check the process list (e.g. lsof in Ubuntu)

answered Jun 19 '20 at 20:20

mascai

1,373
1
9
30

score 0 · Answer 4 · answered Jun 19 '20 at 20:22

0

You can add add browser.close() to close the active tab and browser.quit() to closes all browser windows and ends driver's session/process.

answered Jun 19 '20 at 20:22

Osadhi Virochana

1,294
2
11
21

How to close Headless Firefox after test execution using Selenium and Python

4 Answers4