linux怎么获取键盘上下左右

在 Linux 中获取键盘上下左右的方式主要有以下几种:

1. 使用 `keyboard` 模块:

```python

import keyboard

# 键盘事件

keyboard.on_press_key("up", lambda _: print("Up arrow pressed"))

keyboard.on_press_key("down", lambda _: print("Down arrow pressed"))

keyboard.on_press_key("left", lambda _: print("Left arrow pressed"))

keyboard.on_press_key("right", lambda _: print("Right arrow pressed"))

# 持续键盘事件

keyboard.wait()

```

2. 使用 `curses` 模块:

```python

import curses

# 初始化屏幕

screen = curses.initscr()

# 获取键盘输入

key = screen.getch()

if key == curses.KEY_UP:

print("Up arrow pressed")

elif key == curses.KEY_DOWN:

print("Down arrow pressed")

elif key == curses.KEY_LEFT:

print("Left arrow pressed")

elif key == curses.KEY_RIGHT:

print("Right arrow pressed")

# 释放资源

curses.endwin()

```

3. 使用 `pynput` 模块:

```python

from pynput import keyboard

# 定义回调函数

def on_press(key):

if key == keyboard.Key.up:

print("Up arrow pressed")

elif key == keyboard.Key.down:

print("Down arrow pressed")

elif key == keyboard.Key.left:

print("Left arrow pressed")

elif key == keyboard.Key.right:

print("Right arrow pressed")

# 键盘事件

listener = keyboard.Listener(on_press=on_press)

listener.start()

listener.join()

```

以上三种方式都可以实现在 Linux 下获取键盘上下左右的功能。具体选择哪种方式根据项目需求和个人偏好而定。`keyboard` 模块和 `pynput` 模块可以更好地控制键盘事件,而 `curses` 模块则提供了更丰富的终端控制功能。