Unable to click the linktext using selenium execute_script function using selenium python

You are not calling the click() method:

self.driver.execute_script("document.getElementByLinktext('Level 1s').click();")
                                                                   FIX HERE^

Note that you can also locate the element with selenium and then pass it into the script:

link = self.driver.find_element_by_link_text('Level 1s')
self.driver.execute_script("arguments[0].click();", link)

You can also perform the click via selenium directly if applicable:

link.click()

Also related:

• WebDriver click() vs JavaScript click()