Короткий код для Bishop+Knight, который ведет себя не так, как ожидалось [закрыто] ⇐ Python

[Anonymous]

Может кто-нибудь объяснить мне, почему этот код
import chess

# Definujte nový typ figurky Amazon
AMAZON = 7

# Rozšiřte existující typy figur o Amazon
PIECE_TYPES = [chess.PAWN, chess.KNIGHT, chess.BISHOP, chess.ROOK, chess.QUEEN, chess.KING, AMAZON]
PIECE_SYMBOLS = [None, "p", "n", "b", "r", "q", "k", "a"]

class CustomPiece(chess.Piece):
def __init__(self, piece_type, color):
super().__init__(piece_type, color)

class Amazon(CustomPiece):
def __init__(self, color):
super().__init__(AMAZON, color)

def symbol(self):
return 'A' if self.color == chess.WHITE else 'a'

class CustomBoard(chess.Board):
def __init__(self, fen=None):
self.amazons = chess.BB_EMPTY
self.custom_pieces = {
'A': Amazon(chess.WHITE), 'a': Amazon(chess.BLACK)
}
super().__init__(fen)

def set_piece_at(self, square, piece, promoted=False):
super().set_piece_at(square, piece, promoted)
if piece.piece_type == AMAZON:
self.amazons |= chess.BB_SQUARES[square]

def remove_piece_at(self, square):
piece = self.piece_at(square)
if piece and piece.piece_type == AMAZON:
self.amazons &= ~chess.BB_SQUARES[square]
super().remove_piece_at(square)

def set_fen(self, fen):
parts = fen.split(' ')
while len(parts) < 6:
parts.append("0")
board_part = parts[0]
turn_part = parts[1]
castling_part = parts[2]
en_passant_part = parts[3]
halfmove_clock = parts[4]
fullmove_number = parts[5]

self.set_board_fen(board_part)
self.turn = chess.WHITE if turn_part == 'w' else chess.BLACK
self.castling_rights = chess.BB_EMPTY if castling_part == '-' else chess.SquareSet.from_square(chess.parse_square(castling_part))
self.ep_square = None if en_passant_part == '-' else chess.parse_square(en_passant_part)
self.halfmove_clock = int(halfmove_clock)
self.fullmove_number = int(fullmove_number)

def set_board_fen(self, fen):
self.clear()
self.amazons = chess.BB_EMPTY # Clear amazons bitboard
rows = fen.split('/')
for rank, row in enumerate(rows):
file = 0
for char in row:
if char.isdigit():
file += int(char)
else:
square = chess.square(file, 7 - rank)
if char in self.custom_pieces:
self.set_piece_at(square, self.custom_pieces[char])
else:
self.set_piece_at(square, chess.Piece.from_symbol(char))
file += 1

def __str__(self):
builder = []
for rank in range(7, -1, -1):
empty = 0
for file in range(8):
piece = self.piece_at(chess.square(file, rank))
if piece:
if empty > 0:
builder.append(str(empty))
empty = 0
builder.append(piece.symbol())
else:
empty += 1
if empty > 0:
builder.append(str(empty))
if rank > 0:
builder.append("/")
return "".join(builder)

def print_custom_board(fen):
board = CustomBoard()
board.set_fen(fen)
for rank in range(7, -1, -1):
line = ""
for file in range(8):
piece = board.piece_at(chess.square(file, rank))
if piece:
line += piece.symbol() + " "
else:
line += ". "
print(line)

# Testovací pozice
start_fen = "8/6A1/8/8/8/k1K5/8/8 w - - 0 1"
print_custom_board(start_fen)

не печатает символ A, указанный в строке определения содержимого доски "8/6A1/8/8/8/k1K5/8/8 w - - 0 1 " для размещения во второй строке поля 6 на шахматной доске?
Ожидаемый результат:
. . . . . . . .
. . . . . . A .
. . . . . . . .
. . . . . . . .
. . . . . . . .
k . K . . . . .
. . . . . . . .
. . . . . . . .

Текущий результат:
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
k . K . . . . .
. . . . . . . .
. . . . . . . .


Подробнее здесь: https://stackoverflow.com/questions/786 ... s-expected