每当用户按下退格键时，如何从txt文件中删除密钥？

Question

每当我按下退格键时，我想从txt文件中删除最后一个键，我尝试使用find（'backspace'）删除但似乎不起作用

import pynput
from pynput.keyboard import Key, Listener

count = 0
keys = []

def on_pressed(key):
    global count, keys
    keys.append(key)
    count += 1
    if count > 0:
        count = 0
        writing_to_file(keys)
        keys = []

def writing_to_file(keys):
    with open('C:\\zzzLoggingEverything\\Logger.txt', 'a') as f:
        for key in keys:
            newkey = str(key).replace("'", "")

            if newkey.find('backspace') > 0:
                newkey[:-1]
            elif newkey.find('space') > 0:
                f.write(' ')
            elif newkey.find('enter') > 0:
                f.write('\n')
            elif newkey.find('Key') == -1:
                f.write(newkey)

def on_released(key):
    if key == Key.esc:
        return False

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

Answer 1

您是否尝试过，仅对字符串进行操作，完成后将所有字符串添加到文件中？例如，在退格时，每次都删除字符串的最终字符。