#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