python qt 日期范围demo

开始选日期，结束选日期

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton, QCalendarWidget, QLabel, QDialog
from PyQt5.QtCore import Qt, QDate

class DateRangeWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        layout = QVBoxLayout()

        self.start_date_label = QLabel("Start Date: ")
        self.end_date_label = QLabel("End Date: ")

        self.start_date_button = QPushButton("Select Start Date")
        self.end_date_button = QPushButton("Select End Date")

        layout.addWidget(self.start_date_label)
        layout.addWidget(self.start_date_button)
        layout.addWidget(self.end_date_label)
        layout.addWidget(self.end_date_button)

        self.start_date_button.clicked.connect(lambda: self.showCalendar(self.updateStartDate))
        self.end_date_button.clicked.connect(lambda: self.showCalendar(self.updateEndDate))

        self.setLayout(layout)
        self.setWindowTitle("Date Range Selector")

    def showCalendar(self, update_function):
        dialog = QDialog()
        calendar = QCalendarWidget()
        calendar.setGridVisible(True)
        calendar.setVerticalHeaderFormat(QCalendarWidget.NoVerticalHeader)
        calendar.clicked.connect(lambda: self.updateAndClose(update_function, calendar.selectedDate(), dialog))
        dialog.layout = QVBoxLayout()
        dialog.layout.addWidget(calendar)
        dialog.setLayout(dialog.layout)
        dialog.exec_()

    def updateAndClose(self, update_function, date, dialog):
        update_function(date)
        dialog.close()

    def updateStartDate(self, date):
        self.start_date_label.setText(f"Start Date: {date.toString(Qt.ISODate)}")

    def updateEndDate(self, date):
        self.end_date_label.setText(f"End Date: {date.toString(Qt.ISODate)}")

if __name__ == '__main__':
    app = QApplication(sys.argv)
    date_range_widget = DateRangeWidget()
    date_range_widget.show()
    sys.exit(app.exec_())