old_contents: import re
  import mechanicalsoup
  
  # Connect to Google
  browser = mechanicalsoup.StatefulBrowser()
  browser.open("https://www.google.com/")
  
  # Fill-in the form
  browser.select_form('form[action="/search"]')
  browser["q"] = "MechanicalSoup"
  browser.submit_selected(btnName="btnG")
  
  # Display links
  for link in browser.links():
      target = link.attrs['href']
      # Filter-out unrelated links and extract actual URL from Google's
      # click-tracking.
      if (target.startswith('/url?') and not
              target.startswith("/url?q=http://webcache.googleusercontent.com")):
          target = re.sub(r"^/url\?q=([^&]*)&.*", r"\1", target)
          print(target)
  
new_contents: import re
  import mechanicalsoup
  
  # Connect to Google
  browser = mechanicalsoup.StatefulBrowser()
  browser.open("https://www.google.com/")
  
  # Fill-in the form
  browser.select_form('form[action="/search"]')
  browser["q"] = "MechanicalSoup"
  # Note: the button name is btnK in the content served to actual
  # browsers, but btnG for bots.
  browser.submit_selected(btnName="btnG")
  
  # Display links
  for link in browser.links():
      target = link.attrs['href']
      # Filter-out unrelated links and extract actual URL from Google's
      # click-tracking.
      if (target.startswith('/url?') and not
              target.startswith("/url?q=http://webcache.googleusercontent.com")):
          target = re.sub(r"^/url\?q=([^&]*)&.*", r"\1", target)
          print(target)
  
subject: Add comment about button name on google example