old_contents: # port of simple functional test to python
  import unittest
  from random import randint
  from selenium import webdriver
  
  
  class TestSequenceFunctions(unittest.TestCase):
  
      def setUp(self):
          # set up appium
          self.driver = webdriver.Remote(
            command_executor='http://127.0.0.1:4723/wd/hub',
            desired_capabilities={
              'browserName': 'iOS',
              'platform': 'Mac',
              'version': '6.0'
            })
          self._values = []
  
      def _populate(self):
          # populate text fields with two random number
          elems = self.driver.find_elements_by_tag_name('textField')
          for elem in elems:
              rndNum = randint(0, 10)
              elem.send_keys(rndNum)
              self._values.append(rndNum)
  
      def test_ui_computation(self):
          # populate text fields with values
          self._populate()
          # trigger computation by using the button
          buttons = self.driver.find_elements_by_tag_name("button")
          buttons[0].click()
          # is sum equal ?
          texts = self.driver.find_elements_by_tag_name("staticText")
          self.assertEqual(int(texts[0].text), self._values[0] + self._values[1])
  
      def tearDown(self):
          self.driver.quit()
  
  
  if __name__ == '__main__':
      unittest.main()
  
new_contents: """Be sure to use the latest selenium version
  as there might be some problems with JSON serialization
  """
  import unittest
  from random import randint
  from selenium import webdriver
  
  
  class TestSequenceFunctions(unittest.TestCase):
  
      def setUp(self):
          # set up appium
          self.driver = webdriver.Remote(
            command_executor='http://127.0.0.1:4723/wd/hub',
            desired_capabilities={
              'browserName': 'iOS',
              'platform': 'Mac',
              'version': '6.0'
            })
          self._values = []
  
      def _populate(self):
          # populate text fields with two random number
          elems = self.driver.find_elements_by_tag_name('textField')
          for elem in elems:
              rndNum = randint(0, 10)
              elem.send_keys(rndNum)
              self._values.append(rndNum)
  
      def test_ui_computation(self):
          # populate text fields with values
          self._populate()
          # trigger computation by using the button
          buttons = self.driver.find_elements_by_tag_name("button")
          buttons[0].click()
          # is sum equal ?
          texts = self.driver.find_elements_by_tag_name("staticText")
          self.assertEqual(int(texts[0].text), self._values[0] + self._values[1])
  
      def tearDown(self):
          self.driver.quit()
  
  
  if __name__ == '__main__':
      unittest.main()
  
subject: use the latest selenium version notice