给我一个用pyqt5 制作待办事项提醒app的例子

好的，下面是一个简单的待办事项提醒的例子，使用了 PyQT5 和 QML。

1. 创建一个名为 main.py 的文件，输入以下代码：

import sys
from PyQt5.QtCore import QUrl, Qt
from PyQt5.QtGui import QGuiApplication
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtCore import QObject, pyqtSignal

class Task(QObject):
    titleChanged = pyqtSignal()
    timeChanged = pyqtSignal()

    def __init__(self, title='', time='', parent=None):
        super().__init__(parent)
        self._title = title
        self._time = time

    def getTitle(self):
        return self._title

    def setTitle(self, title):
        self._title = title
        self.titleChanged.emit()

    def getTime(self):
        return self._time

    def setTime(self, time):
        self._time = time
        self.timeChanged.emit()

if __name__ == '__main__':
    app = QGuiApplication(sys.argv)
    engine = QQmlApplicationEngine()
    task_model = Task('Task Title', 'Task Time')
    engine.rootContext().setContextProperty('task_model', task_model)
    engine.load(QUrl.fromLocalFile('main.qml'))
    if not engine.rootObjects():
        sys.exit(-1)
    sys.exit(app.exec_())

2. 创建一个名为 main.qml 的文件，输入以下代码：

import QtQuick 2.15
import QtQuick.Controls 2.15

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: "Task Reminder"

    Task {
        id: task
        title: "Task Title"
        time: "Task Time"
        onTitleChanged: task_title.text = title
        onTimeChanged: task_time.text = time
    }

    Column {
        spacing: 10

        Text {
            id: task_title
            text: task.title
            font.pixelSize: 24
        }

        Text {
            id: task_time
            text: task.time
            font.pixelSize: 16
        }

        TextField {
            id: title_input
            placeholderText: "Enter task title"
            onTextChanged: task.setTitle(text)
        }

        TextField {
            id: time_input
            placeholderText: "Enter task time"
            onTextChanged: task.setTime(text)
        }
    }
}

3. 运行 main.py 文件，将会看到一个窗口，可以输入待办事项的标题和时间，并在下方实时更新。

这是一个非常简单的例子，你可以根据自己的需求进行修改和扩展。