Python借助keyboard监听键盘事件

ゝ一世哀愁。 2022-11-25 00:40 246阅读 0赞

### 文章目录 ###

*  1. 按
 *  2. 安装
 *  3. 按键字符
 *  4. 常用方法
 *   *  4.1. \[wait()\](https://github.com/boppreh/keyboard\#keyboard.wait)
     *  4.2. \[add\_hotkey()\](https://github.com/boppreh/keyboard\#keyboard.add\_hotkey)
     *  4.3. \[record()\](https://github.com/boppreh/keyboard\#keyboard.record)
     *  4.4. \[hook()\](https://github.com/boppreh/keyboard\#keyboard.hook)
     *  4.5. \[on\_press()\](https://github.com/boppreh/keyboard\#keyboard.on\_press)
     *  4.6. \[KeyboardEvent()\](https://github.com/boppreh/keyboard\#keyboard.KeyboardEvent)
     *  4.7. \[全部API\](https://github.com/boppreh/keyboard\#api)

# 1. 按 #

监听鼠标事件可以参考：[Python借助pynput监听鼠标事件][Python_pynput]

# 2. 安装 #

[PyPI主页][PyPI]  
[Github][]

pip install keyboard

如果使用国外的源下载速度慢，我们可以使用国内的源进行提速：

*  豆瓣源
    
        pip3 install keyboard -i https://pypi.douban.com/simple
 *  清华大学源
    
        pip3 install keyboard -i https://pypi.tuna.tsinghua.edu.cn/simple

# 3. 按键字符 #

#字符
    '1'
    'a'
    ...
    #控制
    'ctrl'
    'alt'
    'shift'
    'enter'
    'esc'
    'f1'
    ...
    #方向键
    'up'
    'down'
    'left'
    'right'
    #组合按键
    'ctrl'+'alt'+'a'
    ...

# 4. 常用方法 #

## 4.1. [wait()][wait] ##

监听按键，如果没设置按键，将会一直监听这句之前的按键；如果设置了按键，那么在按下该按键后就会停止监听，并执行后面的语句，举例：

import keyboard
    
    print(0)
    keyboard.wait('a')
    #在按下a之前后面的语句都不会执行，下面同理
    print(1)
    keyboard.wait('b')
    print(2)
    keyboard.wait('c')
    print(3)
    keyboard.wait()
    
    # 结果：
    # 0
    # 1
    # 2
    # 3
    
    #继续监听
    #只有按顺序按下abc（中间过程随便按不干扰）才能输出0123，但因为最后一个没设置按键，所以会一直监听下去

## 4.2. [add\_hotkey()][add_hotkey] ##

设置热键，一般和wait()组合使用，在wait监听下，当按下热键时会执行对应函数，举例：

import keyboard  #监听键盘
    
    def test_a():
        print('aaa')
    
    def test(x):
        print(x)
    
    if __name__ == '__main__':
        keyboard.add_hotkey('f1', test_a)
        #按f1输出aaa
        keyboard.add_hotkey('ctrl+alt', test, args=('b',))
        #按ctrl+alt输出b
        keyboard.wait()
        #wait里也可以设置按键，说明当按到该键时结束

## 4.3. [record()][record] ##

记录键盘事件，如果加上until参数，可以设置当按下某按键时结束监听，和wait方法有点像，举例：

import keyboard
    
    keyboard.add_hotkey('ctrl', print, args=('aaa',))
    keyboard.add_hotkey('alt', print, args=('bbb',))
    
    recorded = keyboard.record(until='esc')
    #当按下esc时结束按键监听，并输出所有按键事件
    print(recorded)
    
    # 结果为：
    # aaa
    # aaa
    # bbb
    # [KeyboardEvent(ctrl down), KeyboardEvent(ctrl up), KeyboardEvent(ctrl down), 
    # KeyboardEvent(ctrl up), KeyboardEvent(alt down), KeyboardEvent(alt up),
    # KeyboardEvent(esc down)]

## 4.4. [hook()][hook] ##

绑定所有按键事件，当只要有按键按下/松开时就会触发的回调函数，举例：

import keyboard
    
    
    def callback(x):
        print(x)
        print()
    
    
    keyboard.hook(callback)
    # 按下任何按键时，都会调用callback，其中一定会传一个值，就是键盘事件
    keyboard.wait()

## 4.5. [on\_press()][on_press] ##

按下及长按任何按键时均会触发回调函数

import keyboard
    
    
    def callback(x):
        print(x)
        print()
    
    
    keyboard.on_press(callback)
    # 按下任何按键时（包括长按），都会调用callback，其中一定会传一个值，就是键盘事件
    keyboard.wait()

## 4.6. [KeyboardEvent()][KeyboardEvent] ##

一个按键事件，里面有3个常用参数：event\_type、scan\_code、name，分别代表按键类型（down/up）、按键号（每个键都有对应的）和按键名，举例：

import keyboard
    
    def abc(x):
        a = keyboard.KeyboardEvent('down', 28, 'enter')
        #按键事件a为按下enter键，第二个参数如果不知道每个按键的值就随便写，
        #如果想知道按键的值可以用hook绑定所有事件后，输出x.scan_code即可
        if x.event_type == 'down' and x.name == a.name:
            print("你按下了enter键")
        #当监听的事件为enter键，且是按下的时候
    
    keyboard.hook(abc)
    # keyboard.hook_key('enter', bcd)
    # recorded = keyboard.record(until='esc')
    keyboard.wait()
    
    # 结果：
    # 你按下了enter键
    # 你按下了enter键

## 4.7. [全部API][API] ##

[Python_pynput]: https://coco56.blog.csdn.net/article/details/106969252
[PyPI]: https://pypi.org/project/keyboard/
[Github]: https://github.com/boppreh/keyboard
[wait]: https://github.com/boppreh/keyboard#keyboard.wait
[add_hotkey]: https://github.com/boppreh/keyboard#keyboard.add_hotkey
[record]: https://github.com/boppreh/keyboard#keyboard.record
[hook]: https://github.com/boppreh/keyboard#keyboard.hook
[on_press]: https://github.com/boppreh/keyboard#keyboard.on_press
[KeyboardEvent]: https://github.com/boppreh/keyboard#keyboard.KeyboardEvent
[API]: https://github.com/boppreh/keyboard#api