Python基础之PyQt5关闭界面

想让执行完程序后自动关闭窗口，而不用点击右上角叉叉的方法是self.close()，具体应用还是以treewidget为例。

前面我们写了一个treewidget的界面，并且实现了界面代码分离，具体实现不多讲了，直接上代码：

treeview4.py

# -*- coding: utf-8 -*-
 
# Form implementation generated from reading ui file 'treeview4.ui'
#
# Created by: PyQt5 UI code generator 5.13.0
#
# WARNING! All changes made in this file will be lost!
 
from PyQt5 import QtCore, QtGui, QtWidgets
 
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.treeWidget = QtWidgets.QTreeWidget(self.centralwidget)
        self.treeWidget.setGeometry(QtCore.QRect(150, 80, 411, 341))
        self.treeWidget.setObjectName("treeWidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 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.treeWidget.headerItem().setText(0, _translate("MainWindow", "Key"))
        self.treeWidget.headerItem().setText(1, _translate("MainWindow", "Value"))

treeview4_run.py

from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog
from PyQt5 import QtCore, QtGui, QtWidgets
import treeview4
import treeview_data
import sys
import threading
import time
 
class MainCode(QMainWindow, treeview4.Ui_MainWindow):
    list_result_update = QtCore.pyqtSignal([int, int, str])
 
    def __init__(self):
        QMainWindow.__init__(self)
        treeview4.Ui_MainWindow.__init__(self)
        self.setupUi(self)
        # 设置列宽
        self.treeWidget.setColumnWidth(0, 200)
 
        _translate = QtCore.QCoreApplication.translate
        self.initial_tree_view(_translate)
        self.treeWidget.expandAll()
        # 用列表触发槽函数
        self.list_result_update.connect(self.modified_treewidget)
        # 线程函数
        self.run()
 
    def run(self):
        th = threading.Thread(target=self.go_update)
        th.setDaemon(True)
        th.start()
 
    def initial_tree_view(self, _translate):
        list_objects = []
        test1 = treeview_data.DataCollection()
        test1.set_module({"Test1": "waiting"})
        test1.add_item({"a1": "waiting"})
        test1.add_item({"b1": "waiting"})
        test1.add_item({"c1": "waiting"})
        list_objects.append(test1)
 
        test2 = treeview_data.DataCollection()
        test2.set_module({"Test2": "waiting"})
        test2.add_item({"a2": "waiting"})
        test2.add_item({"b2": "waiting"})
        test2.add_item({"c2": "waiting"})
        test2.add_item({"d2": "waiting"})
        list_objects.append(test2)
 
        test3 = treeview_data.DataCollection()
        test3.set_module({"Test3": "waiting"})
        test3.add_item({"a2": "waiting"})
        test3.add_item({"b2": "waiting"})
        test3.add_item({"c2": "waiting"})
        test3.add_item({"d2": "waiting"})
        list_objects.append(test3)
 
        for object_num, object_module in enumerate(list_objects):
            item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
            brush = QtGui.QBrush(QtGui.QColor(176, 165, 172))
            brush.setStyle(QtCore.Qt.SolidPattern)
            item_0.setBackground(0, brush)
            for module_name, module_result in object_module.module.items():
                brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
                brush.setStyle(QtCore.Qt.SolidPattern)
                item_0.setBackground(1, brush)
                self.treeWidget.topLevelItem(object_num).setText(0, _translate("MainWindow", module_name))
                self.treeWidget.topLevelItem(object_num).setText(1, _translate("MainWindow", module_result))
            for item_num, item_dic in enumerate(object_module.items):
                for item_name, item_result in item_dic.items():
                    item_1 = QtWidgets.QTreeWidgetItem(item_0)
                    self.treeWidget.topLevelItem(object_num).child(item_num).setText(0, _translate("MainWindow",
                                                                                                   item_name))
                    self.treeWidget.topLevelItem(object_num).child(item_num).setText(1, _translate("MainWindow",
                                                                                                   item_result))
 
    def modified_treewidget(self, num_one, num_two, str_one):
        _translate = QtCore.QCoreApplication.translate
        brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
        brush.setStyle(QtCore.Qt.SolidPattern)
        self.treeWidget.topLevelItem(num_one).child(num_two).setBackground(1, brush)
        self.treeWidget.topLevelItem(num_one).child(num_two).setText(1, _translate(
            "MainWindow",
            str_one))
 
    def go_update(self):
        time.sleep(1)
        # 更新treeview
        self.list_result_update.emit(1, 1, "aaaaaaa")
        time.sleep(1)
        # 关闭窗口
        self.close()
 
if __name__ == "__main__":
    app = QApplication(sys.argv)
    md = MainCode()
    md.show()
    app.exec_()
    # sys.exit(app.exec_())

具体实现效果就是先初始化树结构，等待一秒后改变其中一个的值， 在等待一秒退出窗口。

效果图：