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python-chess v0.10.0
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@niklasf niklasf released this 28 Aug 13:12
· 2902 commits to master since this release
v0.10.0
f20fb2f

New dependencies:

  • If you are using Python < 3.2 you have to install futures in order to
    use the chess.uci module.

Changes:

  • There are big changes in the UCI module. Most notably in async mode multiple
    commands can be executed at the same time (e.g. go infinite and then
    stop or go ponder and then ponderhit).

    go infinite and go ponder will now wait for a result, i.e. you may have
    to call stop or ponderhit from a different thread or run the commands
    asynchronously.

    stop and ponderhit no longer have a result.

  • The values of the color constants chess.WHITE and chess.BLACK have been
    changed. Previously WHITE was 0, BLACK was 1. Now WHITE is True,
    BLACK is False. The recommended way to invert color is using
    not color.

  • The pseudo piece type chess.NONE has been removed in favor of just using
    None.

  • Changed the Board(fen) constructor. If the optional fen argument is not
    given behavior did not change. However if None is passed explicitly an
    empty board is created. Previously the starting position would have been
    set up.

  • Board.fen() will now only show completely legal en-passant squares.

  • Board.set_piece_at() and Board.remove_piece_at() will now clear the
    move stack, because the old moves may not be valid in the changed position.

  • Board.parse_uci() and Board.push_uci() will now accept null moves.

  • Changed shebangs from #!/usr/bin/python to #!/usr/bin/env python for
    better virtualenv support.

  • Removed unused game data files from repository.

Bugfixes:

  • PGN: Prefer the game result from the game termination marker over * in the
    header. These should be identical in standard compliant PGNs. Thanks to
    Skyler Dawson for reporting this.
  • Polyglot: minimum_weight for find(), find_all() and choice() was
    not respected.
  • Polyglot: Negative indexing of opening books was raising IndexError.
  • Various documentation fixes and improvements.

New features:

  • Experimental probing of Gaviota tablebases via libgtb.

  • New methods to construct boards:

    >>> chess.Board.empty()
Board('8/8/8/8/8/8/8/8 w - - 0 1')

    >>> board, ops = chess.Board.from_epd("4k3/8/8/8/8/8/8/4K3 b - - fmvn 17; hmvc 13")
>>> board
Board('4k3/8/8/8/8/8/8/4K3 b - - 13 17')
>>> ops
{'fmvn': 17, 'hmvc': 13}

  • Added Board.copy() and hooks to let the copy module to the right thing.

  • Added Board.has_castling_rights(color),
    Board.has_kingside_castling_rights(color) and
    Board.has_queenside_castling_rights(color).

  • Added Board.clear_stack().

  • Support common set operations on chess.SquareSet().

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