code: def launch_browser(attempt_launch_browser=True):
      
      _DISPLAY_VARIABLES = ['DISPLAY', 'WAYLAND_DISPLAY', 'MIR_SOCKET']
      _WEBBROWSER_NAMES_BLACKLIST = [
          'www-browser', 'lynx', 'links', 'elinks', 'w3m']
  
      import webbrowser
  
      launch_browser = attempt_launch_browser
      if launch_browser:
          if ('linux' in sys.platform and
                  not any(os.getenv(var) for var in _DISPLAY_VARIABLES)):
              launch_browser = False
          try:
              browser = webbrowser.get()
              if (hasattr(browser, 'name')
                      and browser.name in _WEBBROWSER_NAMES_BLACKLIST):
                  launch_browser = False
          except webbrowser.Error:
              launch_browser = False
  
      return launch_browser
docs: Decide if we should launch a browser