如何让cookie.py模块用冒号做key

#!/usr/bin/python
# -*- coding: utf-8 -*-

import Cookie
import string

_Morsel = Cookie.Morsel

class MorselHook(_Morsel):
    """
    >>> import inspect
    >>> (inspect.getargspec(MorselHook.set)[3])[0]
    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$%&'*+-.^_`|~:"
    >>> cookie = Cookie.SimpleCookie()
    >>> cookie.load("ys-tab:entrance:e=abc; webpy_session_id=75eb60dcc83e2d902146af0bb7f47afe61fbd2b2")
    >>> print cookie
    Set-Cookie: webpy_session_id=75eb60dcc83e2d902146af0bb7f47afe61fbd2b2;
    Set-Cookie: ys-tab:entrance:e=abc;
    """
    def set(self, key, val, coded_val, LegalChars=Cookie._LegalChars+':', idmap=string._idmap, translate=string.translate):
        return super(MorselHook, self).set(key, val, coded_val, LegalChars, idmap, translate)

#www.iplaypy.com    
Cookie.Morsel = MorselHook

# 在你需要使用到Cookie的地方先让上面的代码执行一遍

if __name__ == '__main__':
    import doctest
    doctest.testmod()