code: def createFromFile(self, sid, filename):
          
  
          urls = []
          with open(filename) as f:
              for line in f:
                  for url in line.split():
                      urls.append(url)
  
          return self.create(sid, tuple(urls))
docs: Create a new named (sid) Seed from a file containing URLs
          It's assumed URLs are whitespace seperated.
  
          :param sid: the name to assign to the new seed list
          :param filename: the name of the file that contains URLs
          :return: the created Seed object