Tags: mihawk2016/python-chess
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python-chess v0.24.0 This release **drops support for Python 2**. The *0.23.x* branch will be maintained for one more month. Changes: * **Require Python 3.4.** Thanks @hugovk. * No longer using extra pip features: `pip install python-chess[engine,gaviota]` is now `pip install python-chess`. * Various keyword arguments can now be used as **keyword arguments only**. * `chess.pgn.GameNode.accept()` now **also visits the move leading to that node**. * `chess.pgn.GameModelCreator` now requires that `begin_game()` be called. * `chess.pgn.scan_headers()` and `chess.pgn.scan_offsets()` have been removed. Instead the new functions `chess.pgn.read_headers()` and `chess.pgn.skip_game()` can be used for a similar purpose. * `chess.syzygy`: Invalid magic headers now raise `IOError`. Previously they were only checked in an assertion. `type(board).{tbw_magic,tbz_magic,pawnless_tbw_magic,pawnless_tbz_magic}` are now byte literals. * `board.status()` constants (`STATUS_`) are now typed using `enum.IntFlag`. Values remain unchanged. * `chess.svg.Arrow` is no longer a `namedtuple`. * `chess.PIECE_SYMBOLS[0]` and `chess.PIECE_NAMES[0]` are now `None` instead of empty strings. * Performance optimizations: * `chess.pgn.Game.from_board()`, * `chess.square_name()` * Replace `collections.deque` with lists almost everywhere. * Renamed symbols (aliases will be removed in the next release): * `chess.BB_VOID` -> `BB_EMPTY` * `chess.bswap()` -> `flip_vertical()` * `chess.pgn.GameNode.main_line()` -> `mainline_moves()` * `chess.pgn.GameNode.is_main_line()` -> `is_mainline()` * `chess.variant.BB_HILL` -> `chess.BB_CENTER` * `chess.syzygy.open_tablebases()` -> `open_tablebase()` * `chess.syzygy.Tablebases` -> `Tablebase` * `chess.syzygy.Tablebase.open_directory()` -> `add_directory()` * `chess.gaviota.open_tablebases()` -> `open_tablebase()` * `chess.gaviota.open_tablebases_native()` -> `open_tablebase_native()` * `chess.gaviota.NativeTablebases` -> `NativeTablebase` * `chess.gaviota.PythonTablebases` -> `PythonTablebase` * `chess.gaviota.NativeTablebase.open_directory()` -> `add_directory()` * `chess.gaviota.PythonTablebase.open_directory()` -> `add_directory()` Bugfixes: * The PGN parser now gives the visitor a chance to handle unknown chess variants and continue parsing. * `chess.pgn.GameNode.uci()` was always raising an exception. New features: * `chess.SquareSet` now extends `collections.abc.MutableSet` and can be initialized from iterables. * `board.apply_transform(f)` and `board.transform(f)` can apply bitboard transformations to a position. Examples: `chess.flip_{vertical,horizontal,diagonal,anti_diagonal}`. * `chess.pgn.GameNode.mainline()` iterates over nodes of the mainline. Can also be used with `reversed()`. Reversal is now also supported for `chess.pgn.GameNode.mainline_moves()`. * `chess.svg.Arrow(tail, head, color="niklasf#888")` gained an optional *color* argument. * `chess.pgn.BaseVisitor.parse_san(board, san)` is used by parsers and can be overwritten to deal with non-standard input formats. * `chess.pgn`: Visitors can advise the parser to skip games or variations by returning the special value `chess.pgn.SKIP` from `begin_game()`, `end_headers()` or `begin_variation()`. This is only a hint. The corresponding `end_game()` or `end_variation()` will still be called. * Added `chess.svg.MARGIN`.
python-chess v0.23.9 Changes: * Updated `Board.is_fivefold_repetition()`. FIDE rules have changed and the repetition no longer needs to occur on consecutive alternating moves. Thanks @LegionMammal978.
python-chess v0.23.7 Bugfixes: * Fixed `ThreeCheckBoard.mirror()` and `CrazyhouseBoard.mirror()`, which were previously resetting remaining checks and pockets respectively. Thanks @QueensGambit. Changes: * `Board.move_stack` is now guaranteed to be UCI compatible with respect to the representation of castling moves and `board.chess960`. * Drop support for Python 3.3, which is long past end of life. * `chess.uci`: The `position` command now manages `UCI_Chess960` and `UCI_Variant` automatically. * `chess.uci`: The `position` command will now always send the entire history of moves from the root position. * Various coding style fixes and improvements. Thanks @hugovk. New features: * Added `Board.root()`.
python-chess v0.23.6 Bugfixes: * Gaviota: Fix Python based Gaviota tablebase probing when there are multiple en passant captures. Thanks @bjoernholzhauer. * Syzygy: Fix DTZ for some mate in 1 positions. Similarly to the fix from v0.23.1 this is mostly cosmetic. * Syzygy: Fix DTZ off-by-one in some 6 piece antichess positions with moves that threaten to force a capture. This is mostly cosmetic. Changes: * Let `uci.Engine.position()` send history of at least 8 moves if available. Previously it sent only moves that were relevant for repetition detection. This is mostly useful for Lc0. Once performance issues are solved, a future version will always send the entire history. Thanks @SashaMN and @Mk-Chan. * Various documentation fixes and improvements. New features: * Added `polyglot.MemoryMappedReader.get(board, default=None)`.
python-chess v0.23.5 Bugfixes: * Atomic chess: KNvKN is not insufficient material. * Crazyhouse: Detect insufficient material. This can not happen unless the game was started with insufficient material. Changes: * Better error messages when parsing info from UCI engine fails. * Better error message for `b.set_board_fen(b.fen())`.
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