http.cookies | RFC2109 is obsolete.

[SmartManoj]

cpython/Lib/http/cookies.py

Lines 262 to 285 in 37c6db6

	# RFC 2109 lists these attributes as reserved:
	# path comment domain
	# max-age secure version
	#
	# For historical reasons, these attributes are also reserved:
	# expires
	#
	# This is an extension from Microsoft:
	# httponly
	#
	# This dictionary provides a mapping from the lowercase
	# variant on the left to the appropriate traditional
	# formatting on the right.
	_reserved = {
	"expires" : "expires",
	"path" : "Path",
	"comment" : "Comment",
	"domain" : "Domain",
	"max-age" : "Max-Age",
	"secure" : "Secure",
	"httponly" : "HttpOnly",
	"version" : "Version",
	"samesite" : "SameSite",
	}

RFC2109 is obsolete.
RFC6265 has only the following headers
Expires
Max-Age
Domain
Path
Secure
HttpOnly

from http.cookies import SimpleCookie
rawdata = 'version=4'
cookie = SimpleCookie()
import http.cookies
cookie.load(rawdata)
print(cookie) # empty ;  expected {'version': '4'}