Different behaviour library and sqlformat.org

[KoBOLL]

I am trying to parse an SQL query:

do $$
declare
  content_count int = 10;
begin
  /*comment*/
  select 1;
end; $$

sqlformat.org parse and highlight it correctly:

But when I try to do it in Python:

import sqlparse

def parse(s: str):
    res = sqlparse.parse(s)
    print(res[0].tokens)

parse("""
do $$
declare
  content_count int = 10;
begin
  /*comment*/
  select 1;
end; $$""")

I get :

[<Newline ' ' at 0x7AB1C28A8408>, <Keyword 'do' at 0x7AB1C28A8468>, <Whitespace ' ' at 0x7AB1C28A84C8>, <Literal '$$ dec...' at 0x7AB1C28A8528>]

What am I doing wrong?