如何获取 python-chess 模块中所有合法动作的列表？

Question

我正在使用 python 国际象棋模块。在网站上，它显示您可以使用

检查移动是否合法

import chess

board = chess.Board()
move = input("Enter a chess move: ")
if move in board.legal_moves:
    # Some code to do if the move is a legal move

但是，我希望能够从 board.legal_moves 得到一招。当我尝试这个时：

print(board.legal_moves[0])

此returns以下错误：

TypeError: 'LegalMoveGenerator' object is not subscriptable

如何 select 像使用列表一样移动？那么，select离子怎么用呢？

Answer 1

board.legal_moves 对象是一个 generator，或者更具体地说是一个 LegalMoveGenerator。您可以迭代该对象，每次迭代都会产生一些东西。您可以使用 list(board.legal_moves) 将其转换为列表，然后照常对其进行索引。

import chess
board = chess.Board()
legal_moves = list(board.legal_moves)
legal_moves[0]  # Move.from_uci('g1h3')

Answer 2

从生成器生成列表。

legal_moves = list(board.legal_moves)

合法移动现在是一个列表。

print(legal_moves)

[Move.from_uci('g1h3'), Move.from_uci('g1f3'), Move.from_uci('b1c3'),
 Move.from_uci('b1a3'), Move.from_uci('h2h3'), Move.from_uci('g2g3'), 
 Move.from_uci('f2f3'), Move.from_uci('e2e3'), Move.from_uci('d2d3'), 
 Move.from_uci('c2c3'), Move.from_uci('b2b3'), Move.from_uci('a2a3'), 
 Move.from_uci('h2h4'), Move.from_uci('g2g4'), Move.from_uci('f2f4'), 
 Move.from_uci('e2e4'), Move.from_uci('d2d4'), Move.from_uci('c2c4'), 
 Move.from_uci('b2b4'), Move.from_uci('a2a4')]

Answer 3

只需使用编辑和评估功能：

import chess # Import chess

board = chess.Board() # Create chess board

moves_t = str(board.legal_moves)[37:-1] # Get the tuple as string
moves_t = moves_t.replace(", ", "', '") # Converting all the SAN names into strings
moves_t = moves_t.replace("(", "('")
moves_t = moves_t.replace(")", "')")
moves_t = eval(moves_t) # Using eval function to turn into tuple
moves = [] # Creates list to store values
for i in moves_t: # Go through all values
    moves.append(i) # Add them to empty list

如何获取 python-chess 模块中所有合法动作的列表？

How to get a list of all the legal moves in the python-chess module?

python

list

python-3.x

python-chess