python - 使用模块键盘输出重复

Question

我正在开发一个键盘记录器，它使用 python 模块“键盘”捕获按键。但我的输出有问题。当我输入“Hello World”时，输出是flase。像这样:“shift-H-shift-e-e-l-l-o-space-W-o-r-l-d-d-enter
代码:

print("starting")
import keyboard                 # imports the keyboard-module
file = open("log.txt", "w")     # creates a file
nZ = 0
keyboard.unhook_all()           # clears all keys that were typed in

def on_key(key):
    file.write(str(key.name) + "\n")    # writes the output to a file
    file.flush()                        # saves the written stuff

while True:
    keyboard.hook(on_key)       # waits for a key typed in
    keyboard.unhook_all()       # again clears all keys that were typed in
    nZ += 1

file.close()

所以它们有时是重复的，有时不是。这是为什么？我的电脑速度慢吗？是模块本身的问题还是我使用了错误的功能或类似的功能？

编辑 - 正确的代码(工作得更好，但使用起来不太好，因为其中仍然有一些重复项):

print("starting")
import keyboard                 # imports the keyboard-module
file = open("log.txt", "w")     # creates a file
keyboard.unhook_all()           # clears all keys that were typed in

def on_key(key):
    file.write(str(key.name) + "\n")    # writes the output to a file
    file.flush()                        # saves the written stuff

while True:
    keyboard.on_release(on_key)       # waits for a key typed in
    keyboard.unhook_all()              # again clears all keys that were typed in

file.close() 

** 编辑 2 - 使用模块键盘最有效的方法是以下代码:

import keyboard
rk = keyboard.record(until="Esc")
keyboard.play(rk)
 

Answer 1

问题在于，钩子(Hook)会触发，松开，反弹，并在仍按下键时立即再次触发。

您可以通过使用keyboard.on_release(on_key)而不是keyboard.hook(on_key)来防止这种情况。这会导致钩子(Hook)仅在释放按键时触发。这样钩子(Hook)回弹时按键就不再被按下。