Module game 

Enums

WinStatus

Functions

check_winner

Determine winner. The last player to move (the one with more pieces on the board) is credited with the win.

current_player

Whose turn is it? Player 0 moves first; after that they alternate. Returns None if the piece counts are inconsistent.

has_winning_line

Check whether any win line contains all 4 distinct shapes (regardless of color).

is_game_over