Python Simple Cookie Morsel Object转换为列表

Question

import pickle
import Cookie

C = Cookie.SimpleCookie()

class Test:
 cnt = 0
arr = []
for x in range(10):
 test = Test()
 test.cnt = x
 arr.append(test)
 C['test'] =  pickle.dumps(arr)
 arr =  pickle.loads(C['test']) # throws an error TypeError: expected read buffer, Morsel found

如何修复此代码？我想将一个列表存储在处理程序内的cookie中。有人可以回答吗？