There is no necessity to focus on the element HTML after the click is already invoked.

As per the HTML

<a href="#" class="btn btn-alt see-full-list-btn">See Full List</a>

you can use either of the following locator strategies:

• Using link_text:

  driver.find_element(By.LINK_TEXT, "See Full List").click()
  

• Using css_selector:

  driver.find_element(By.CSS_SELECTOR, "a.btn.btn-alt.see-full-list-btn").click()
  

• Using xpath:

  driver.find_element(By.XPATH, "//a[@class='btn btn-alt see-full-list-btn' and text()='See Full List']").click()
  

Ideally to click on the clickable element you need to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following locator strategies:

• Using LINK_TEXT:

  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.LINK_TEXT, "See Full List"))).click()
  

• Using CSS_SELECTOR:

  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "a.btn.btn-alt.see-full-list-btn"))).click()
  

• Using XPATH:

  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//a[@class='btn btn-alt see-full-list-btn' and text()='See Full List']"))).click()
  

• Note: You have to add the following imports :

  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support import expected_conditions as EC
  

test_button4 = driver.find_elements_by_class_name('test_button4') # notice its "find_elementS" with an S
submit_element = [x for x in test_button4 if x.get_attribute('value') == 'Update'] #this would work if you had unlimited things with class_name == 'test_button4', as long as only ONE of them is value="Update"
if len(submit_element): # using a non-empty list as truthiness
    print ("yay! found updated!")

This is something that i hardly ever see anyone document, explain, or use.

(ill use name for example because its simplest)

find_element_by_name() returns a single item, or gives an exception if it doesnt find it

find_elements_by_name() returns a list of elements. if no elements found, the list is empty

so if you do a find_elements_by_class_name() and it returns a list with X entries in it, all thats left at that point to narrow down what you want is either some old fashioned list comprehension ( like how i used in my answer ) or some indexing if you for some reason know which element you want.

also get_attribute() is seriously under-utilized as well. it parses the inside of the elements html by using what is before the = and returns what is after the =