code: def as_lwp_str(self, ignore_discard=True, ignore_expires=True):
          
          now = time.time()
          r = []
          for cookie in self:
              if not ignore_discard and cookie.discard:
                  continue
              if not ignore_expires and cookie.is_expired(now):
                  continue
              r.append("Set-Cookie3: %s" % lwp_cookie_str(cookie))
          return "\n".join(r+[""])
docs: Return cookies as a string of "\\n"-separated "Set-Cookie3" headers.
  
          ignore_discard and ignore_expires: see docstring for FileCookieJar.save