Cookie.load method problem

[Praki Prakash]

This is on a NT 4 Python 1.52 version. I am using Cookie.py to store
cookies received from websites. The set-cookie header looks like:
"Set-Cookie: B=a95d7i92qlv3a; expires=Thu, 15 Apr 2010 0:00:00 GMT;
path=/ ; domain=.yahoo.com;" and when I invoke load on this string, it
tells me I am trying to set a reserved attribute. Am I using this
incorrectly? (This is my first attempt at writing Python programs.)

TIA Praki