如何在不使用pygame的情况下检测按键事件和按键按下事件 [英] How to detect key press event and key hold down event without using pygame

问题描述

我目前正在寻找一个能够检测/监视键盘的库. 我的目的是检测何时按住某个键以及何时发生该键.

I am currently looking for a library that is able to detect/monitor the keyboard. My intention is to detect when a key is being held down and while it occurs something should happen.

大多数SO帖子都建议使用pygame，但我发现它太多了，无法包含诸如库这样的简单任务.我也尝试过使用pynput，它只能检测到一台印刷机，而不是一堆印刷机.

Most SO posts suggest to use pygame, but i find it a bit too much, to involve a library such as that for this simple task. i've also tried with pynput, which resulted only detecting one press rather than a stream of presses.

关于如何在循环检测按键的同时执行此操作的任何建议...

any suggestions on how i can make this while loop detect a key is being pressed / held down...

我尝试使用while循环:

My attempt with while loop:

from pynput import keyboard

def on_press(key):
    while key == keyboard.Key.cmd_l:
        try:
            print('- Started recording -'.format(key))
        except IOError:
            print "Error"
    else:
        print('incorrect character {0}, press cmd_l'.format(key))


def on_release(key):
    print('{0} released'.format(key))
    if key == keyboard.Key.cmd_l:
        print('{0} stop'.format(key))
        keyboard.Listener.stop
        return False



with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
    listener.join()

while解决方案使它陷入了while循环中，从而无法摆脱它.

The while solution make it stuck in the while loop, making it impossible to get out of it.

推荐答案

我发现的最简单的方法之一就是使用pynput模块.在这里也可以找到很好的例子

One of the simplest way I found is to use pynput module.can be found here with nice examples as well

from pynput import keyboard

def on_press(key):
    try:
        print('alphanumeric key {0} pressed'.format(
            key.char))
    except AttributeError:
        print('special key {0} pressed'.format(
            key))

def on_release(key):
    print('{0} released'.format(
        key))
    if key == keyboard.Key.esc:
        # Stop listener
        return False

收集事件直到发布

with keyboard.Listener(
        on_press=on_press,
        on_release=on_release) as listener:
    listener.join()

上面是为我解决的示例，请安装并继续

sudo pip install pynput (pip3 if python3.*)

这篇关于如何在不使用pygame的情况下检测按键事件和按键按下事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！