code: def test_comment_quoting(self):
      c = cookies.SimpleCookie()
      c["foo"] = "\N{COPYRIGHT SIGN}"
      self.assertEqual(str(c["foo"]), 'Set-Cookie: foo="\\251"')
      c["foo"]["comment"] = "comment \N{COPYRIGHT SIGN}"
      self.assertEqual(
          str(c["foo"]),
          'Set-Cookie: foo="\\251"; Comment="comment \\251"',
      )
  
imports: import copy
  import unittest
  import doctest
  from http import cookies
  import pickle
label_desc: Use image node_id 15 for calling the CookieTests obj's underlying member method code with example usage: obj.test_comment_quoting() without return types