What do cookies of this type mean?

Question

HTTP Cookies

What do cookies of this type mean?

(dp1
S'python'
p2
S'pickles'
p3
sS'subtle'
p4
S'flag'
p5
sS'user'
p6
Ns.

It is obvious that the site is written in python, apparently 5 lines +
the sixth are transmitted. Maybe someone knows what sS,S,Ns mean. ?? Is this form of cookie notation standard for python?

Answer 1

It looks like a serialized object.
python-3.ru/page/module-pickle-python