'Init.'

def __init__(self, url, prefer_leetcode=False):

    self._prefer_leetcode = prefer_leetcode
    url = url.strip().rstrip('/').replace('/zh-cn/', '/en/')
    key_end = url.find('.com/')
    self._site = url[(key_end - 8):key_end]
    self._url = url
    self._raw_p_html = PyQuery(url=url)
    self._p_url_path = url.split('/')[(-1)]
    self._p_urls = {}
