Resolve "Digg engine not working"

"""

# pylint: disable=missing-function-docstring

from json import loads

from urllib.parse import urlencode

from datetime import datetime

from lxml import html

from searx.utils import eval_xpath, extract_text

# about

about = {

categories = ['news', 'social media']

paging = True

base_url = 'https://digg.com'

results_per_page = 10

# search-url

search_url = base_url + (

    '/api/search/'

    '/search'

    '?{query}'

    '&from={position}'

    '&size=20'

    '&format=html'

    '&size={size}'

    '&offset={offset}'

)

def request(query, params):

    offset = (params['pageno'] - 1) * 20

    offset = (params['pageno'] - 1) * results_per_page + 1

    params['url'] = search_url.format(

        query = urlencode({'q': query}),

        position = offset,

        size = results_per_page,

        offset = offset,

    )

    return params

def response(resp):

    results = []

    # parse results

    for result in loads(resp.text)['mapped']:

    dom = html.fromstring(resp.text)

        # strip html tags and superfluous quotation marks from content

        content = html.document_fromstring(

            result['excerpt']

        ).text_content()

    results_list = eval_xpath(dom, '//section[contains(@class, "search-results")]')

        # 'created': {'ISO': '2020-10-16T14:09:55Z', ...}

        published = datetime.strptime(

            result['created']['ISO'], '%Y-%m-%dT%H:%M:%SZ'

        )

    for result in results_list:

        titles = eval_xpath(result, '//article//header//h2')

        contents = eval_xpath(result, '//article//p')

        urls = eval_xpath(result, '//header/a/@href')

        published_dates = eval_xpath(result, '//article/div/div/time/@datetime')

        for (title, content, url, published_date) in zip(titles, contents, urls, published_dates):

            results.append({

            'url': result['url'],

            'title': result['title'],

            'content' : content,

            'template': 'videos.html',

            'publishedDate': published,

            'thumbnail': result['images']['thumbImage'],

                'url': url,

                'publishedDate': datetime.strptime(published_date, '%Y-%m-%dT%H:%M:%SZ'),

                'title': extract_text(title),

                'content' : extract_text(content),

            })

    return results