how was selenium made python code example

Example 1: selenium python example

import unittest
from selenium import webdriver
import time


class TestThree(unittest.TestCase):

    def setUp(self):
        self.startTime = time.time()

    def test_url_fire(self):
        time.sleep(2)
        self.driver = webdriver.Firefox()
        self.driver.get("https://app.simplegoods.co/i/IQCZADOY") # url associated with button click
        button = self.driver.find_element_by_id("payment-submit").get_attribute("value")
        self.assertEquals(u'Pay - $60.00', button)

    def test_url_phantom(self):
        time.sleep(1)
        self.driver = webdriver.PhantomJS()
        self.driver.get("https://app.simplegoods.co/i/IQCZADOY") # url associated with button click
        button = self.driver.find_element_by_id("payment-submit").get_attribute("value")
        self.assertEquals(u'Pay - $60.00', button)

    def tearDown(self):
        t = time.time() - self.startTime
        print("%s: %.3f" % (self.id(), t))
        self.driver.quit()

if __name__ == '__main__':
    suite = unittest.TestLoader().loadTestsFromTestCase(TestThree)
    unittest.TextTestRunner(verbosity=0).run(suite)

Example 2: what is selenium python

# SELENIUM:
# - python library
# - opens up your browser and physically interacts with elements
# - used for task automation and web scraping