old_contents: import urllib2
  
  
  class HtmlReader(object):
      URL_BASE = "https://en.wikipedia.org/"
  
      def __init__(self, url):
          self.url = self.URL_BASE + url
  
      def read(self):
          request = urllib2.Request(self.url)
          return urllib2.urlopen(request).read()
new_contents: import urllib2
  
  
  class HtmlReader(object):
      URL_BASE = "https://en.wikipedia.org"
  
      def __init__(self, url):
          self.url = self.URL_BASE + url
  
      def read(self):
          request = urllib2.Request(self.url)
          return urllib2.urlopen(request).read()
subject: Fix base url