Минипланировщик

from PyQt5 import QtCore, QtGui, QtWidgets
 
 
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(717, 399)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.calendarWidget = QtWidgets.QCalendarWidget(self.centralwidget)
        self.calendarWidget.setGeometry(QtCore.QRect(0, 20, 312, 291))
        self.calendarWidget.setObjectName("calendarWidget")
        self.timeEdit = QtWidgets.QTimeEdit(self.centralwidget)
        self.timeEdit.setGeometry(QtCore.QRect(0, 0, 311, 22))
        self.timeEdit.setObjectName("timeEdit")
        self.listWidget = QtWidgets.QListWidget(self.centralwidget)
        self.listWidget.setGeometry(QtCore.QRect(310, 0, 391, 361))
        self.listWidget.setObjectName("listWidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(0, 340, 311, 23))
        self.pushButton.setObjectName("pushButton")
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.lineEdit.setGeometry(QtCore.QRect(0, 310, 311, 31))
        self.lineEdit.setObjectName("lineEdit")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 717, 21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
 
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))
 
 
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

import sys
from ui import Ui_MainWindow
from PyQt5.QtWidgets  import QApplication, QMainWindow
 
 
class Plan(QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.pushButton.clicked.connect(self.run)
 
    def run(self):
        date = self.calendarWidget.selectedDate().toString("dd-MM-yyyy")
        plan = self.lineEdit.text()
        dt = self.timeEdit.time().toString()
        self.listWidget.addItem(f'{date} {dt} - {plan}')
 
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    plan= Plan()
    plan.show()
    sys.exit(app.exec_())