You can set DRAWS_OK to True or False by editing the file.
Explanation of PGN files:
lichess4545-all-s01-24.pgn
- A PGN someone sent me: presuably this is all games played in season 1 to 24
modified.pgn
- Same PGN as above, with all lines containing '[Opening' removed --
couldn't be bothered to deal with some encoding problems I was hitting