append list elements "random-without repeat" to multiple html files

I'm trying to replace href url with a result value using regex, I also tried Beautifulsoup module but no success.keep getting one and the same one url in all html files

class RandomChoiceNoImmediateRepeat(object):
    def __init__(self, lst):
        self.lst = lst
        self.last = None
    def choice(self):
        if self.last is None:
            self.last = random.choice(self.lst)
            return self.last
        else:
            nxt = random.choice(self.lst)
            # make a new choice as long as it's equal to the last.
            while nxt == self.last:   
                nxt = random.choice(self.lst)
            # Replace the last and return the choice
            self.last = nxt
            return nxt

for filename in glob.glob('/docs/*.txt'):
    file_metadata = { 'name': 'file.txt', 'mimeType': '*/*' }
    media = MediaFileUpload(filename, mimetype='*/*', resumable=True)
    file = drive_service.files().create(body=file_metadata, media_body=media, fields='id').execute()
    link = 'https://drive.google.com/uc?export=download&id=' + file.get('id')
    linkd = []
    linkd.append(link)
    for filename in glob.glob('/docs/htmlz/*.html'):
        with open(filename, "r") as html_file:
            soup = BeautifulSoup(html_file,'html.parser')
            for anchor in soup.findAll("a", attrs={ "class" : "downloadme" }):
                gen = RandomChoiceNoImmediateRepeat(linkd)
                i = gen.choice()
                anchor['href'] = str(i)
                with open(filename, "w") as html_file:
                    html_file.write(str(soup))
                    html_file.close()