将击键存储到文本文件中

Question

我从 https://pynput.readthedocs.io/en/latest/keyboard.html 中提取了一段代码并对其进行了修改，以便将击键存储到文本文件中。但是，我在输出中收到错误消息：

ImportError: cannot import name 'keyboard' from 'pynput'

谷歌搜索显示...

from pynput.keyboard import Key, Listener

...但即使是此导入也与我的代码不兼容。我已经为 python3 下载了 pynput。原代码来自上面link:

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
    # Collect events until released
    with keyboard.Listener(on_press=on_press,on_release=on_release) as listener:
        listener.join()

修改后的代码：

import pynput
from pynput import keyboard

def on_press(key):
    with open("keylogger.txt", "a") as f:
        try:
            f.print('alphanumeric key {0} pressed'.format(key.char))
        except AttributeError:
            f.print('special key {0} pressed'.format(key))
def on_release(key):
    with open("keylogger.txt", "a") as f:
        f.print('{0} released'.format(key))
        if key == keyboard.Key.esc:
            # Stop listener
            return False
# Collect events until released
with keyboard.Listener(on_press=on_press,on_release=on_release) as listener:
    listener.join()

我是否遗漏了一些可以让程序将击键正确存储到文本文件中的东西？

Answer 1

第一个，不要将您的Python文件命名为模块。

ImportError: cannot import name 'keyboard' from 'pynput' (/root/Testing6/Sample6_2/pynput.py)

在这里，Python 正在从您的 pynput 脚本中寻找 keyboard，而不是 actual pynput模块。
见 Module Search Path:

When a module named spam is imported, the interpreter first searches for a built-in module with that name. If not found, it then searches for a file named spam.py in a list of directories given by the variable sys.path. sys.path is initialized from these locations:

The directory containing the input script (or the current directory when no file is specified).

PYTHONPATH (a list of directory names, with the same syntax as the shell variable PATH).

The installation-dependent default.

这里，Python在当前目录下发现了一个pynput模块，你的脚本，显然不是你要的，确实没有keyboard模块.因此，您只需将其重命名为其他名称（例如 mykeylogger.py）。您当前的导入代码应该可以正常工作：

from pynput import keyboard

第2，没有f.print。 FIle 对象没有 print 方法。
将所有 f.print 更改为 f.write.

def on_press(key):
    with open("keylogger.txt", "a") as f:
        try:
            f.write('alphanumeric key {0} pressed'.format(key.char))
        except AttributeError:
            f.write('special key {0} pressed'.format(key))

Last，请注意 pynput 有一些 platform limitations 可能导致它 not 工作.对于 Linux，您只需确保：

An X server must be running.

The environment variable $DISPLAY must be set.

之后您的程序运行良好。

$ python3 mykeylogger.py
aaabbb
^CTraceback (most recent call last):
...
KeyboardInterrupt
$ cat keylogger.txt
alphanumeric key a pressed'a' releasedalphanumeric key a pressed'a' releasedalphanumeric key a pressed'a' releasedalphanumeric key b pressed'b' releasedalphanumeric key b pressed'b' releasedalphanumeric key b pressed'b' releasedspecial key Key.enter pressedKey.enter releasedspecial key Key.ctrl pressedalphanumeric key  pressed

将击键存储到文本文件中

Storing keystrokes into text file

python

python-3.x

pynput