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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def setUserAgent(self, uA=None):
 """ This method will be called whenever a new query will be executed. :param uA: Any User Agent that was needed to be inserted. This parameter is optional. :return: Returns True if a User Agent was inserted and False if no User Agent could be inserted. """

        logger = logging.getLogger("osrframework.utils")

        if not uA:
            # Setting the User Agents
            if self.userAgents:
                # User-Agent (this is cheating, ok?)
                logger = logging.debug("Selecting a new random User Agent.")
                uA = random.choice(self.userAgents)
            else:
                logger = logging.debug("No user agent was inserted.")
                return False

        #logger.debug("Setting the user agent:\t" + str(uA))

        self.br.addheaders = [ ('User-agent', uA), ]
        #self.br.addheaders = [('User-Agent', 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11'), ('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'), ('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.3'), ('Accept-Encoding', 'none'), ('Accept-Language', 'es-es,es;q=0.8'), ('Connection', 'keep-alive')]
        #self.br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

        return True