问我如何使用python来操作这个国际象棋符号呢？

EN

import chess
import chess.pgn

pgn = open("your_pgn_file.pgn")
game = chess.pgn.read_game(pgn)
board = game.board()

for move in game.mainline_moves():
    board.push(move)
print(board.fen())

import chess

board = chess.Board()
san_mainline = "d4 Nc6 e4 e5 f4 f6 dxe5 fxe5"

for move in san_mainline.split():
    board.push_san(move)
print(board.fen())

import chess
san = 'd4 Nc6 e4 e5 f4 f6 dxe5 fxe5'
board = chess.Board()
for move_san in san.split(' '):
    board.push_san(move_san)