#8826: the "expires" attribute value is a date string with spaces, but apparently not all user-agents put it in quotes. Handle that as a special case.
diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py
index c36c494..9e51b67 100644
--- a/Lib/http/cookies.py
+++ b/Lib/http/cookies.py
@@ -434,6 +434,8 @@
(?P<val> # Start of group 'val'
"(?:[^\\"]|\\.)*" # Any doublequoted string
| # or
+ \w{3},\s[\w\d-]{9,11}\s[\d:]{8}\sGMT # Special case for "expires" attr
+ | # or
""" + _LegalCharsPatt + r"""* # Any word or empty string
) # End of group 'val'
\s*;? # Probably ending in a semi-colon