如何用python实现数独游戏【附源码】

一、第一次用python实现数独游戏的代码：

def print_board(board):
    for row in board:
        print(" ".join(map(str, row)))

def is_valid_move(board, row, col, num):
    # Check if the number is already in the row
    if num in board[row]:
        return False
    
    # Check if the number is already in the column
    if num in [board[i][col] for i in range(9)]:
        return False
    
    # Check if the number is already in the 3x3 subgrid
    start_row, start_col = 3 * (row // 3), 3 * (col // 3)
    for i in range(start_row, start_row + 3):
        for j in range(start_col, start_col + 3):
            if board[i][j] == num:
                return False
    
    return True

def solve(board):
    for row in range(9):
        for col in range(9):
            if board[row][col] == 0:
                for num in range(1, 10):
                    if is_valid_move(board, row, col, num):
                        board[row][col] = num
                        if solve(board):
                            return True
                        board[row][col] = 0
                return False
    return True

def generate_board():
    board = [[0] * 9 for _ in range(9)]
    solve(board)
    
    # Remove some numbers to create the puzzle
    empty_cells = 45  # adjust difficulty by changing the number of empty cells
    while empty_cells > 0:
        row = random.randint(0, 8)
        col = random.randint(0, 8)
        if board[row][col] != 0:
            board[row][col]