Python Windows`msvcrt.getch()`仅检测到每3次按键? [英] Python Windows `msvcrt.getch()` only detects every 3rd keypress?

问题描述

我的代码如下:

import msvcrt
while True:
    if msvcrt.getch() == 'q':    
       print "Q was pressed"
    elif msvcrt.getch() == 'x':    
       sys.exit()
    else:
       print "Key Pressed:" + str(msvcrt.getch()

此代码基于此问题；我用它来熟悉getch.

This code is based on this question; I was using it to acquaint myself with getch.

我已经注意到，按3次3键需要一次输出文本.为什么是这样?我正在尝试将其用作事件循环，这太滞后了...

I've noticed that it takes 3 pressing the key 3 times to output the text once. Why is this? I'm trying to use it as an event loop, and that's too much of a lag...

即使我输入3个不同键，它也只会输出第3个按键.

Even if I type 3 different keys, it only outputs the 3rd keypress.

如何迫使它运行得更快?有没有更好的方法来实现我要实现的目标?

How can I force it to go faster? Is there a better way to achieve what I'm trying to achieve?

谢谢！

逃避

推荐答案

，您在循环中调用了3次该函数.尝试仅这样调用一次:

you call the function 3 times in your loop. try calling it only once like this:

import msvcrt
while True:
    pressedKey = msvcrt.getch()
    if pressedKey == 'q':    
       print "Q was pressed"
    elif pressedKey == 'x':    
       sys.exit()
    else:
       print "Key Pressed:" + str(pressedKey)

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