热键的输出与预期不同

Posted 2023-03-17

【中文标题】热键的输出与预期不同

【英文标题】：output for hotkeys is different than expected

【发布时间】：2019-12-12 13:32:07

【问题描述】：

我是制作 python 热键的新手。我正在尝试使用 python pypi 键盘模块，并试图让 lambda 函数识别键盘条目。我还包含了一个打印语句，看看它是否有效。 print 语句有效，但之后键盘输入返回一个 none 值。如何让 lambda 函数识别这部分代码？ 谢谢你的帮助。

我尝试过 print、keyboard.write，我尝试过通过 keyboard.press 和 keyboard.press_and_release 执行此操作。

import keyboard


combination_to_function = 
    (keyboard.add_hotkey('ctrl+shift+z', lambda: print("hotkey complete", keyboard.press('m')))), 
    (keyboard.add_hotkey('ctrl+shift+x', lambda: print("hotkey complete", keyboard.press('f')))),
    (keyboard.add_hotkey('ctrl+shift+v', lambda: print("hotkey complete", keyboard.press('o')))),
    (keyboard.add_hotkey('ctrl+shift+d', lambda: print("hotkey complete", keyboard.press('k'))))


# Currently pressed keys
current_keys = set()

def on_press(key):
    # When a key is pressed, add it to the set we are keeping track of and check if this set is in the dictionary
    current_keys.add(key)
    if frozenset(current_keys) in combination_to_function:
        # If the current set of keys are in the mapping, execute the function
        combination_to_function[frozenset(current_keys)]()

def on_release(key):
    # When a key is released, remove it from the set of keys we are keeping track of
    current_keys.remove(key)

keyboard.wait()

结果是“热键完成”无。我希望得到完整的热键和按下的字母

【问题讨论】：

print("hotkey complete m")

press() 将密钥发送到活动窗口，但这并不意味着它将值返回给print()

【参考方案1】：

我不确定我是否理解问题，但你可以创建函数

def my_press(key):
    keyboard.press(key)
    print("hotkey complete", key)

然后使用它

keyboard.add_hotkey('ctrl+shift+z', lambda: my_press('m'))