设计一个2048小游戏软件，采用键盘操作，w对应上移，a对应左移，s对应下移，d对应右移。（不要使用pygame） 基本功能：初始在随机位置显示1个数字“2”，状态栏显示当前操作次数；能实现游戏逻辑。 发挥功能：界面的美化、历史记录等不限。请写出python代码

好的，以下是一个简单的Python代码实现，实现了2048小游戏的基本功能：

import random
import copy
import os

# 初始化游戏界面
board = [[0 for i in range(4)] for j in range(4)]
score = 0
step = 0

# 在随机位置生成数字2
def generate_num():
    empty_pos = []
    for i in range(4):
        for j in range(4):
            if board[i][j] == 0:
                empty_pos.append((i, j))
    if empty_pos:
        pos = random.choice(empty_pos)
        board[pos[0]][pos[1]] = 2

# 判断游戏是否结束
def is_game_over():
    for i in range(4):
        for j in range(4):
            if board[i][j] == 0:
                return False
            if j < 3 and board[i][j] == board[i][j+1]:
                return False
            if i < 3 and board[i][j] == board[i+1][j]:
                return False
    return True

# 合并相邻的相同数字
def merge():
    global board, score
    new_board = copy.deepcopy(board)
    for i in range(4):
        j = 0
        while j < 3:
            if new_board[i][j] == new_board[i][j+1]:
                new_board[i][j] *= 2
                score += new_board[i][j]
                new_board[i][j+1] = 0
            j += 1
    board = new_board

# 移动数字
def move(direction):
    global board, step
    if direction == 'w':
        board = [[board[j][i] for j in range(4)] for i in range(4)]
        merge()
        board = [[board[j][i] for j in range(4)] for i in range(4)]
        step += 1
    elif direction == 'a':
        merge()
        step += 1
    elif direction == 's':
        board = [[board[j][i] for j in range(4)] for i in range(4)]
        board.reverse()
        merge()
        board.reverse()
        board = [[board[j][i] for j in range(4)] for i in range(4)]
        step += 1
    elif direction == 'd':
        board.reverse()
        merge()
        board.reverse()
        step += 1

# 显示游戏界面
def show_board():
    os.system('cls')
    print('Score:', score, 'Step:', step)
    for i in range(4):
        for j in range(4):
            print(board[i][j], end='\t')
        print()

# 游戏主循环
while True:
    generate_num()
    show_board()
    if is_game_over():
        print('Game over!')
        break
    direction = input('Please input direction(w/a/s/d):')
    move(direction)

以上代码实现了基本功能，可以在终端中运行。界面比较简陋，可以使用tkinter库等来实现美化。同时，可以使用文件读写来实现历史记录等功能。