human
I wrote the below code

    opener = urllib2.OpenerDirector()
    opener.add_handler(urllib2.HTTPDefaultErrorHandler())
    opener.add_handler(urllib2.HTTPSHandler())
    opener.add_handler(urllib2.HTTPErrorProcessor())
    opener.add_handler(urllib2.HTTPHandler())
    if (cookiejar_path is None):
        cookiejar_path = expanduser('~/.viewfinder_admin_cookie')
    cookie_jar = cookielib.MozillaCookieJar(cookiejar_path)
    if os.path.exists(cookiejar_path):
        try:
            cookie_jar.load()
            logging.info(('loaded    admin    authentication    cookies    from    %s' % cookiejar_path))
        except:
            os.unlink(cookiejar_path)
    if (not os.path.exists(cookiejar_path)):
        fd = os.open(cookiejar_path, os.O_CREAT, 384)
        os.close(fd)
    os.chmod(cookiejar_path, 384)
    opener.add_handler(urllib2.HTTPCookieProcessor(cookie_jar))
    class TornadoXSRFProcessor(urllib2.BaseHandler, ):
        "Add    tornado's    xsrf    headers    to    outgoing    requests."
        handler_order = (urllib2.HTTPCookieProcessor.handler_order + 1)
        def http_request(self, request):
            cookie_header = request.get_header('Cookie')
            if ((cookie_header is not None) and ('_xsrf=' in cookie_header)):
                request.add_unredirected_header('X-Xsrftoken', re.match('_xsrf=([^;]+)', cookie_header).group(1))
            else:
                request.add_unredirected_header('X-Xsrftoken', 'fake_xsrf')
                if cookie_header:
                    request.add_unredirected_header('Cookie', ('_xsrf="fake_xsrf".
   ' + cookie_header))
                else:
                    request.add_unredirected_header('Cookie', '_xsrf="fake_xsrf"')
            return request
        https_request = http_request
    opener.add_handler(TornadoXSRFProcessor())
    if ((len(cookie_jar) == 0) or any([c.is_expired() for c in cookie_jar if (c.domain == host)])):
        if ((user is None) or (pwd is None) or (otp_entry is None)):
            (user, pwd, otp_entry) = _PromptForAdminCookie(user, pwd,...

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def GetAdminOpener(host, user=None, pwd=None, otp_entry=None, cookiejar_path=None):