How to use the fanficfare.exceptions.StoryDoesNotExist function in FanFicFare

def doExtractChapterUrlsAndMetadata(self, get_cover=True):
        url = self.url

        try:
            data = self._fetchUrl(url)
        except HTTPError as e:
            if e.code == 404:
                raise exceptions.StoryDoesNotExist('Error 404: {0}'.format(self.url))
            else:
                raise e

        if 'We might have some troubles to find out this page.' in data:
            raise exceptions.StoryDoesNotExist('{0} says: "" for url "{1}"'.format(self.getSiteDomain(), self.url))

        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = self.make_soup(data)
        # removing all of the scripts
        for tag in soup.findAll('script') + soup.find_all('svg'):
            tag.extract()

        # Now go hunting for all the meta data and the chapter list.

        # This is the block that holds the metadata
        bookdetails = soup.find('div', {'class': 'g_col_8'})

if m != None:
            if self.is_adult or self.getConfig("is_adult"):
                # We tried the default and still got a warning, so
                # let's pull the warning number from the 'continue'
                # link and reload data.
                addurl = m.group(1)
                # correct stupid & error in url.
                addurl = addurl.replace("&","&")
                url = self.url+'&index=1'+addurl
                logger.debug("URL 2nd try: "+url)

                try:
                    data = self._fetchUrl(url)
                except urllib2.HTTPError, e:
                    if e.code == 404:
                        raise exceptions.StoryDoesNotExist(self.url)
                    else:
                        raise e
            else:
                raise exceptions.AdultCheckRequired(self.url)

        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.FailedToDownload(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")

        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = self.make_soup(data)
        # print data

        # Now go hunting for all the meta data and the chapter list.

        pagetitle = soup.find('div',{'id':'pagetitle'})

return
                except Exception as e:
                    logger.info("Failure to parse page, stop stepping through pages: %s"%e)
                    return
                if forward:
                    yield following
                for chapter in followChapters(following, forward):
                    yield chapter
                if not forward:
                    yield following

        try:
            startingChapter = self._makeChapter(self.url)
        except HTTPError as error:
            if error.code == 404:
                raise exceptions.StoryDoesNotExist(self.url)
            raise

        # We only have one date for each chapter and assume the oldest one
        # to be publication date and the most recent one to be update date.
        datePublished = datetime.datetime.max
        dateUpdated = datetime.datetime.min
        wordCount = 0
        storyInProgress = False

        chapters = \
            list(followChapters(startingChapter, forward=False)) + \
            [startingChapter] + \
            list(followChapters(startingChapter, forward=True))

        headings = [chapter.getHeading() for chapter in chapters]
        largestCommonPrefix = _getLargestCommonPrefix(*headings)

def extractChapterUrlsAndMetadata(self):
        logger.debug('URL: %s', self.url)
        try:
            data = self._fetchUrl(self.url)
        except HTTPError as exception:
            if exception.code == 404:
                raise exceptions.StoryDoesNotExist('404 error: {}'.format(self.url))
            raise exception

        soup = self.make_soup(data)
        info = soup.select_one('#info')
        self.story.setMetadata('title', stripHTML(info.h1))
        self.setCoverImage(self.url, soup.select_one('#fmimg > img')['src'])

        info_paragraphs = info('p')
        # Unicode strings because '：' isn't ':', but \xef\xbc\x9a
        author = stripHTML(info_paragraphs[0]).replace(u'Author：', '', 1)
        self.story.setMetadata('author', author)
        self.story.setMetadata('authorId', author)
        datestr = stripHTML(info_paragraphs[2]).replace(u'UpdateTime：', '', 1)
        date = None
        try:
            ## Some older stories use a different date format.

def extractChapterUrlsAndMetadata(self):

        # index=1 makes sure we see the story chapter index.  Some
        # sites skip that for one-chapter stories.
        url = self.url
        logger.debug("URL: "+url)

        try:
            data = self._fetchUrl(url)
        except urllib2.HTTPError, e:
            if e.code == 404:
                raise exceptions.StoryDoesNotExist(self.url)
            else:
                raise e

        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.AccessDenied(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")

        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = self.make_soup(data)
        # print data

        # Now go hunting for all the meta data and the chapter list.

        ## Title
        a = soup.find('h1')
        self.story.setMetadata('title',stripHTML(a))

# you need a different number.  print data at that point
            # and see what the 'click here to continue' url says.
            addurl = "&ageconsent=ok&warning=1" # XXX
        else:
            addurl=""

        # index=1 makes sure we see the story chapter index.  Some
        # sites skip that for one-chapter stories.
        url = self.url+'&index=1'+addurl
        logger.debug("URL: "+url)

        try:
            data = self._fetchUrl(url)
        except urllib2.HTTPError, e:
            if e.code == 404:
                raise exceptions.StoryDoesNotExist(self.url)
            else:
                raise e

        if self.needToLoginCheck(data):
            # need to log in for this one.
            self.performLogin(url)
            data = self._fetchUrl(url)

        # The actual text that is used to announce you need to be an
        # adult varies from site to site.  Again, print data before
        # the title search to troubleshoot.
        if "For adults only " in data: # XXX
            raise exceptions.AdultCheckRequired(self.url)

        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.FailedToDownload(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")

if m != None:
            if self.is_adult or self.getConfig("is_adult"):
                # We tried the default and still got a warning, so
                # let's pull the warning number from the 'continue'
                # link and reload data.
                addurl = m.group(1)
                # correct stupid & error in url.
                addurl = addurl.replace("&","&")
                url = self.url+'&index=1'+addurl
                logger.debug("URL 2nd try: "+url)

                try:
                    data = self._fetchUrl(url)
                except urllib2.HTTPError, e:
                    if e.code == 404:
                        raise exceptions.StoryDoesNotExist(self.url)
                    else:
                        raise e    
            else:
                raise exceptions.AdultCheckRequired(self.url)
            
        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.FailedToDownload(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")
            
        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = bs.BeautifulSoup(data)
        # print data

        # Now go hunting for all the meta data and the chapter list.
        
        ## Title
        pt = soup.find('div', {'id' : 'pagetitle'})

def extractChapterUrlsAndMetadata(self):

        # index=1 makes sure we see the story chapter index.  Some
        # sites skip that for one-chapter stories.
        url = self.url+'&index=1'
        logger.debug("URL: "+url)

        try:
            data = self._fetchUrl(url)
        except urllib2.HTTPError, e:
            if e.code == 404:
                raise exceptions.StoryDoesNotExist(self.url)
            else:
                raise e

        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.AccessDenied(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")

        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = self.make_soup(data)
        # print data

        # Now go hunting for all the meta data and the chapter list.

        ## Title and author
        a = soup.find('div', {'id' : 'pagetitle'})

        aut = a.find('a', href=re.compile(r"viewuser.php\?uid=\d+"))

## Only needed with password protected stories, which you have
        ## to have logged into in the website using this account.
        self.performLogin(self.url)

        ##---------------------------------------------------------------------------------------------------
        ## Get the story's title page. Check if it exists.

        try:
            # don't use cache if manual is_adult--should only happen
            # if it's an adult story and they don't have is_adult in ini.
            data = self.do_fix_blockquotes(self._fetchUrl(self.url,
                                                          usecache=(not self.is_adult)))
            soup = self.make_soup(data)
        except HTTPError as e:
            if e.code == 404:
                raise exceptions.StoryDoesNotExist(self.url)
            else:
                raise e

        if "Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource" in data:
            raise exceptions.StoryDoesNotExist(self.url)

        if "This story has been marked as having adult content. Please click below to confirm you are of legal age to view adult material in your country." in data:
            raise exceptions.AdultCheckRequired(self.url)

        ##----------------------------------------------------------------------------------------------------
        ## Extract metadata

        storyContentBox = soup.find('div', {'class':'story_content_box'})

        # Title
        title = storyContentBox.find('a', {'class':re.compile(r'.*\bstory_name\b.*')})

if m != None:
            if self.is_adult or self.getConfig("is_adult"):
                # We tried the default and still got a warning, so
                # let's pull the warning number from the 'continue'
                # link and reload data.
                addurl = m.group(1)
                # correct stupid & error in url.
                addurl = addurl.replace("&","&")
                url = self.url+'&index=1'+addurl
                logger.debug("URL 2nd try: "+url)

                try:
                    data = self._fetchUrl(url)
                except urllib2.HTTPError, e:
                    if e.code == 404:
                        raise exceptions.StoryDoesNotExist(self.url)
                    else:
                        raise e
            else:
                raise exceptions.AdultCheckRequired(self.url)

        if "Access denied. This story has not been validated by the adminstrators of this site." in data:
            raise exceptions.AccessDenied(self.getSiteDomain() +" says: Access denied. This story has not been validated by the adminstrators of this site.")

        # use BeautifulSoup HTML parser to make everything easier to find.
        soup = self.make_soup(data)
        # print data

        # Now go hunting for all the meta data and the chapter list.

        ## Title
        a = soup.find('a', href=re.compile(r'viewstory.php\?sid='+self.story.getMetadata('storyId')+"$"))