How to run my python selenium scripts using browser?

You can test with pytest-django and selenium in Django.

First, pytest-django and selenium as shown below:

pip install pytest-django && pip install selenium

Then, create pytest.ini and conftest.py, test_1.py and __init__.py(Empty file) in tests folder as shown below. *pytest.ini should be put in the root directory of django-project folder and my answer explains that multiple conftest.py can be used:

django-project
 |-core
 |  └-settings.py
 |-my_app1
 |-my_app2
 |-pytest.ini
 └-tests
    |-__init__.py
    |-conftest.py 
    └-test_1.py

Then, set the code below to pytest.ini. *I recommend to set tests to testpaths because it makes the test faster according to the doc:

# "pytest.ini"

[pytest]
DJANGO_SETTINGS_MODULE = core.settings
testpaths = tests

Now for example, set the code below to tests/conftest.py and tests/test_1.py to test Django Admin with the multiple headless browsers Google Chrome, Microsoft Edge and Firefox together with Selenium. *My answer explains how to test Django Admin with the multiple browsers Google Chrome, Microsoft Edge and Firefox together with Selenium:

# "tests/conftest.py"

import pytest
from selenium import webdriver

@pytest.fixture(params=["chrome", "edge", "firefox"], scope="class")
def browser_driver_init(request):
    if request.param == "chrome":
        options = webdriver.ChromeOptions()
        options.add_argument("--headless=new")
        web_driver = webdriver.Chrome(options=options)
    if request.param == "edge":
        options = webdriver.EdgeOptions()
        options.add_argument("--headless=new")
        web_driver = webdriver.Edge(options=options)
    if request.param == "firefox":
        options = webdriver.FirefoxOptions()
        options.add_argument("-headless")
        web_driver = webdriver.Firefox(options=options)
    request.cls.driver = web_driver
    yield
    web_driver.close()

# "tests/test_1.py"

import pytest

@pytest.mark.usefixtures("browser_driver_init")
class Test_URL_Browser:
    def test_open_url(self, live_server):
        self.driver.get(("%s%s" % (live_server.url, "/admin/")))
        assert "Log in | Django site admin" in self.driver.title

Finally, run the command below:

pytest