PySimpleGUI导致pynput全局热键异常 如何将二者正常结合使用

你遇到的异常本质是PySimpleGUI弹窗运行时，其内部事件循环会抢占键盘事件回调，导致pynput的GlobalHotKeys监听器没有接收到<alt>、<ctrl>修饰键的释放信号，监听器内部会一直判定这两个修饰键处于按下状态，后续只要按下t键就会匹配到热键规则，错误触发弹窗。

有两种常用的修复方式，都可以稳定解决该问题：

方案1：重置监听器状态 #

修改逻辑为触发弹窗时先停止监听器清空状态，弹窗关闭后再重启监听器，改造成本极低：

import PySimpleGUI as sg
from pynput import keyboard

hotkey_listener = None

def f_test():
    # 停止监听器清空内部按键缓存
    hotkey_listener.stop()
    layout = [[sg.Text("Hello from PySimpleGUI")], [sg.Button("OK")]]
    window = sg.Window("Demo", layout)
    while True:
        event, values = window.read()
        if event == "OK" or event == sg.WIN_CLOSED:
            break
    window.close()
    # 重启监听器恢复热键功能
    global hotkey_listener
    hotkey_listener = keyboard.GlobalHotKeys({
        '<alt>+<ctrl>+t': f_test})
    hotkey_listener.start()

if __name__ == "__main__":
    hotkey_listener = keyboard.GlobalHotKeys({
        '<alt>+<ctrl>+t': f_test})
    hotkey_listener.start()
    hotkey_listener.join()

方案2：自定义热键判定逻辑 #

不使用pynput封装好的GlobalHotKeys，自己手动维护按键状态实时判定热键，避免内置缓存的问题，自定义程度更高：

import PySimpleGUI as sg
from pynput import keyboard

# 实时维护已按下的按键集合
pressed_keys = set()

def on_press(key):
    try:
        pressed_keys.add(key)
        # 实时校验热键组合
        if (keyboard.Key.alt in pressed_keys 
            and keyboard.Key.ctrl in pressed_keys 
            and hasattr(key, 'char') and key.char == 't'):
            f_test()
    except AttributeError:
        pass

def on_release(key):
    # 释放时移除按键状态
    if key in pressed_keys:
        pressed_keys.remove(key)
    # 可选：按esc退出监听
    if key == keyboard.Key.esc:
        return False

def f_test():
    layout = [[sg.Text("Hello from PySimpleGUI")], [sg.Button("OK")]]
    window = sg.Window("Demo", layout)
    while True:
        event, values = window.read()
        if event == "OK" or event == sg.WIN_CLOSED:
            break
    window.close()

if __name__ == "__main__":
    with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
        listener.join()

内容的提问来源于stack exchange，提问作者Sjakbajsen