How can I handle selenium and geckodriver install error?

I ran the following code by installing selenium and django module.

from selenium import webdriver 
browser = webdriver.Firefox()
browser.get('http://localhost:8000') 
assert 'Django' in browser.title

For the selenium module, I need geckodriver for firefox browser. So, I installed geckodriver by different ways - 1. npm, 2. brew, 3. direct install (download from here and move it to /usr/local/bin or /usr/bin. All the ways did not work for the above test code.

I got the following error message:

Traceback (most recent call last):
  File "functional_tests.py", line 3, in <module>
    browser.get('http://localhost:8000') 
  File "/Users/kiyeonj/opt/anaconda3/envs/tdd_practice/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 333, in get
    self.execute(Command.GET, {'url': url})
  File "/Users/kiyeonj/opt/anaconda3/envs/tdd_practice/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/Users/kiyeonj/opt/anaconda3/envs/tdd_practice/lib/python3.8/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: Reached error page: about:neterror?e=connectionFailure&u=http%3A//localhost%3A8000/&c=UTF-8&d=Firefox%20can%E2%80%99t%20establish%20a%20connection%20to%20the%20server%20at%20localhost%3A8000.

Please let me know what the problem is..

Solution

I think you need a gecko driver as well.

You can download from here

and put it into a folder, preferably where you have your .py files

and then use it like this :-

from selenium import webdriver
driver = webdriver.Firefox(executable_path = "D:\geckodriver.exe")
driver.maximize_window()
browser.get('http://localhost:8000')
assert 'Django' in browser.title

PS :

executable_path = 'full file path to your gecko driver'