Python pyqt5冻结问题

示例.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'example.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


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.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.player_list_table = QtWidgets.QTableWidget(self.centralwidget)
        self.player_list_table.setObjectName("player_list_table")
        self.player_list_table.setColumnCount(5)
        self.player_list_table.setRowCount(0)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(0, item)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(1, item)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(2, item)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(3, item)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(4, item)
        self.gridLayout.addWidget(self.player_list_table, 2, 0, 1, 1)
        self.timeline = QtWidgets.QSlider(self.centralwidget)
        self.timeline.setMaximum(100)
        self.timeline.setPageStep(1)
        self.timeline.setOrientation(QtCore.Qt.Horizontal)
        self.timeline.setObjectName("timeline")
        self.gridLayout.addWidget(self.timeline, 0, 0, 1, 1)
        self.refresh_table = QtWidgets.QPushButton(self.centralwidget)
        self.refresh_table.setObjectName("refresh_table")
        self.gridLayout.addWidget(self.refresh_table, 1, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        item = self.player_list_table.horizontalHeaderItem(0)
        item.setText(_translate("MainWindow", "1"))
        item = self.player_list_table.horizontalHeaderItem(1)
        item.setText(_translate("MainWindow", "2"))
        item = self.player_list_table.horizontalHeaderItem(2)
        item.setText(_translate("MainWindow", "3"))
        item = self.player_list_table.horizontalHeaderItem(3)
        item.setText(_translate("MainWindow", "4"))
        item = self.player_list_table.horizontalHeaderItem(4)
        item.setText(_translate("MainWindow", "5"))
        self.refresh_table.setText(_translate("MainWindow", "Refresh table"))


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_())

示例_code.py

from PyQt5 import QtCore, QtGui, QtWidgets
from example import *
from PyQt5.QtCore import QTimer
from PyQt5.QtGui import QPixmap,QBrush
from PyQt5.QtGui import QPalette
from PyQt5.QtCore import Qt
import sys

class Example_Code:
    def __init__(self):
        self.app = QtWidgets.QApplication(sys.argv)     
        self.app.addLibraryPath(r"C:/Python/Lib/site-packages/qt5_applications/Qt/plugins/imageformats")
        self.app.setStyle("Fusion")
        self.mainWindow = QtWidgets.QMainWindow()
        self.main_ui = Ui_MainWindow()
        self.main_ui.setupUi(self.mainWindow)
        self.mainWindow.showMaximized()
        
        #A QTimer which set value to QSlider
        self.slider_position = 0
        self.timer=QTimer()
        self.timer.timeout.connect(self.move_slider)
        self.timer.start(125)
        
        #display table contents
        self.display_table()
        
        #on button press refresh table
        self.main_ui.refresh_table.clicked.connect(self.display_table)
        
        
        sys.exit(self.app.exec_())
        
    def move_slider(self):
        self.slider_position +=1
        self.main_ui.timeline.setValue(self.slider_position)
        if(self.slider_position>100):
            self.slider_position = 0
            
    def display_table(self):
        palette = self.main_ui.player_list_table.palette()
        palette.setBrush(QPalette.Highlight,QBrush(Qt.white))
        palette.setBrush(QPalette.HighlightedText,QBrush(Qt.black))
        
        row = 0
        
        self.main_ui.player_list_table.setWordWrap(True)
        self.main_ui.player_list_table.verticalHeader().setSectionResizeMode(QtWidgets.QHeaderView.ResizeToContents)
        
        self.player_list_data_length = 100
        self.main_ui.player_list_table.setRowCount(0)
        for player_list_row in range(0,100):
            self.main_ui.player_list_table.insertRow(player_list_row)
            for j in range(0,5):
                self.frame = QtWidgets.QFrame()
                self.frame.setGeometry(QtCore.QRect(50, 60, 355, 231))
                self.frame.setStyleSheet("QFrame{\nborder:none;\n}")
                self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
                self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
                self.gridLayout_2 = QtWidgets.QGridLayout(self.frame)
                self.gridLayout_2.setObjectName("gridLayout_2")
                self.image_title = QtWidgets.QLabel(self.frame)
                sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
                sizePolicy.setHorizontalStretch(0)
                sizePolicy.setVerticalStretch(0)
                sizePolicy.setHeightForWidth(self.image_title.sizePolicy().hasHeightForWidth())
                self.image_title.setSizePolicy(sizePolicy)
                self.image_title.setAlignment(QtCore.Qt.AlignCenter)
                self.image_title.setWordWrap(True)
                self.image_title.setStyleSheet("QLabel{\nborder:none;\n}")
                self.gridLayout_2.addWidget(self.image_title, 1, 0, 1, 3)
                self.image = QtWidgets.QLabel(self.frame)
                sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
                sizePolicy.setHorizontalStretch(0)
                sizePolicy.setVerticalStretch(0)
                sizePolicy.setHeightForWidth(self.image.sizePolicy().hasHeightForWidth())
                self.image.setSizePolicy(sizePolicy)
                self.image.setMinimumSize(QtCore.QSize(150, 150))
                self.image.setMaximumSize(QtCore.QSize(150, 150))
                self.image.setText("")
                self.image.setScaledContents(True)
                self.image.setObjectName("image")
                self.gridLayout_2.addWidget(self.image, 0, 1, 1, 1)
                spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
                self.gridLayout_2.addItem(spacerItem, 0, 2, 1, 1)
                spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
                self.gridLayout_2.addItem(spacerItem1, 0, 0, 1, 1)
                
                pixmap = QPixmap("test.png").scaledToHeight(150)
                self.image.setPixmap(pixmap)
                self.image.setScaledContents(True)
                self.image.resize(150, 150)
                
                self.image_title.setText("\n\n test.png")
                self.frame.update()
                self.main_ui.player_list_table.setCellWidget(player_list_row,j,self.frame)
                
        header = self.main_ui.player_list_table.horizontalHeader()
        header.setDefaultAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.Alignment(QtCore.Qt.TextWordWrap))
        for i in range(0,5):
            header.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)      
        
        self.main_ui.player_list_table.setStyleSheet("QTableWidget::item {border: 0px;padding: 10px 10px 10px 10px; }")
    
        self.main_ui.player_list_table.setPalette(palette)
        self.main_ui.player_list_table.setFocusPolicy(Qt.NoFocus)
    
        self.main_ui.player_list_table.setSizeAdjustPolicy(QtWidgets.QAbstractScrollArea.AdjustToContents)
        self.main_ui.player_list_table.resizeColumnsToContents()
        
        print("Table updated")
            
            
program = Example_Code()

将文件名为test.png的png图像放入项目目录

更改行：

self.app.addLibraryPath（r“C:/Python/Lib/site packages/qt5_applications/Qt/plugins/imageformats”）

为正确（这用于打开任何图像格式）

使用“python example\u code.py”运行应用程序

from PyQt5 import QtCore, QtGui, QtWidgets
from example import *
from PyQt5.QtCore import QTimer
from PyQt5.QtGui import QPixmap,QBrush
from PyQt5.QtGui import QPalette
from PyQt5.QtCore import Qt
import sys

class Example_Code:
    def __init__(self):
        self.app = QtWidgets.QApplication(sys.argv)     
        self.app.addLibraryPath(r"C:/Python/Lib/site-packages/qt5_applications/Qt/plugins/imageformats")
        self.app.setStyle("Fusion")
        self.mainWindow = QtWidgets.QMainWindow()
        self.main_ui = Ui_MainWindow()
        self.main_ui.setupUi(self.mainWindow)
        self.mainWindow.showMaximized()
        
        #A QTimer which set value to QSlider
        self.slider_position = 0
        self.timer=QTimer()
        self.timer.timeout.connect(self.move_slider)
        self.timer.start(125)
        
        #display table contents
        self.display_table()
        
        #on button press refresh table
        self.main_ui.refresh_table.clicked.connect(self.display_table)
        
        
        sys.exit(self.app.exec_())
        
    def move_slider(self):
        self.slider_position +=1
        self.main_ui.timeline.setValue(self.slider_position)
        if(self.slider_position>100):
            self.slider_position = 0
            
    def display_table(self):
        palette = self.main_ui.player_list_table.palette()
        palette.setBrush(QPalette.Highlight,QBrush(Qt.white))
        palette.setBrush(QPalette.HighlightedText,QBrush(Qt.black))
        
        row = 0
        
        self.main_ui.player_list_table.setWordWrap(True)
        self.main_ui.player_list_table.verticalHeader().setSectionResizeMode(QtWidgets.QHeaderView.ResizeToContents)
        
        self.player_list_data_length = 100
        self.main_ui.player_list_table.setRowCount(0)
        for player_list_row in range(0,100):
            self.main_ui.player_list_table.insertRow(player_list_row)
            for j in range(0,5):
                self.frame = QtWidgets.QFrame()
                self.frame.setGeometry(QtCore.QRect(50, 60, 355, 231))
                self.frame.setStyleSheet("QFrame{\nborder:none;\n}")
                self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
                self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
                self.gridLayout_2 = QtWidgets.QGridLayout(self.frame)
                self.gridLayout_2.setObjectName("gridLayout_2")
                self.image_title = QtWidgets.QLabel(self.frame)
                sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
                sizePolicy.setHorizontalStretch(0)
                sizePolicy.setVerticalStretch(0)
                sizePolicy.setHeightForWidth(self.image_title.sizePolicy().hasHeightForWidth())
                self.image_title.setSizePolicy(sizePolicy)
                self.image_title.setAlignment(QtCore.Qt.AlignCenter)
                self.image_title.setWordWrap(True)
                self.image_title.setStyleSheet("QLabel{\nborder:none;\n}")
                self.gridLayout_2.addWidget(self.image_title, 1, 0, 1, 3)
                self.image = QtWidgets.QLabel(self.frame)
                sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
                sizePolicy.setHorizontalStretch(0)
                sizePolicy.setVerticalStretch(0)
                sizePolicy.setHeightForWidth(self.image.sizePolicy().hasHeightForWidth())
                self.image.setSizePolicy(sizePolicy)
                self.image.setMinimumSize(QtCore.QSize(150, 150))
                self.image.setMaximumSize(QtCore.QSize(150, 150))
                self.image.setText("")
                self.image.setScaledContents(True)
                self.image.setObjectName("image")
                self.gridLayout_2.addWidget(self.image, 0, 1, 1, 1)
                spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
                self.gridLayout_2.addItem(spacerItem, 0, 2, 1, 1)
                spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
                self.gridLayout_2.addItem(spacerItem1, 0, 0, 1, 1)
                
                pixmap = QPixmap("test.png").scaledToHeight(150)
                self.image.setPixmap(pixmap)
                self.image.setScaledContents(True)
                self.image.resize(150, 150)
                
                self.image_title.setText("\n\n test.png")
                self.frame.update()
                self.main_ui.player_list_table.setCellWidget(player_list_row,j,self.frame)
                
        header = self.main_ui.player_list_table.horizontalHeader()
        header.setDefaultAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.Alignment(QtCore.Qt.TextWordWrap))
        for i in range(0,5):
            header.setSectionResizeMode(i, QtWidgets.QHeaderView.ResizeToContents)      
        
        self.main_ui.player_list_table.setStyleSheet("QTableWidget::item {border: 0px;padding: 10px 10px 10px 10px; }")
    
        self.main_ui.player_list_table.setPalette(palette)
        self.main_ui.player_list_table.setFocusPolicy(Qt.NoFocus)
    
        self.main_ui.player_list_table.setSizeAdjustPolicy(QtWidgets.QAbstractScrollArea.AdjustToContents)
        self.main_ui.player_list_table.resizeColumnsToContents()
        
        print("Table updated")
            
            
program = Example_Code()

按下刷新表格按钮

按下此按钮时，QSlider动画将冻结几秒钟

编辑：

我尝试使用QThread，但不起作用（打开100*5=500个新窗口，因为

QObject::setParent: Cannot set parent, new parent is in a different thread
QObject::installEventFilter(): Cannot filter events for objects in a different t
hread.

)

文件：example_code.py（已更新但不起作用）

从PyQt5导入QtCore、QtGui、QtWidgets 从示例导入* 从PyQt5.QtCore导入QTimer 从PyQt5.QtGui导入QPixmap、QBrush 从PyQt5.QtGui导入qpalete 从PyQt5.QtCore导入Qt 从PyQt5.QtCore导入QObject、QThread、pyqtSignal 导入系统 导入时间 #步骤1：创建工人类 班级工作人员（QObject）： 设置行计数=pyqtSignal（int） 插入行=pyqtSignal（int） cell_ready=pyqtSignal（int，int，qtwidts.QFrame） 表_ready=pyqtSignal（） def运行（自）： 行=0 self.set\u row\u count.emit（0） 对于范围（0100）中的玩家列表行： self.insert\u row.emit（播放器列表\u row） 对于范围（0,5）内的j： self.frame=qtwidts.QFrame（） self.frame.setGeometry（QtCore.QRect（50,60355231）） self.frame.setStyleSheet（“QFrame{\n顺序：无；\n}”） self.frame.setFrameShape（qtwidts.QFrame.StyledPanel） self.frame.setFrameShadow（qtwidts.QFrame.Raised） self.gridLayout_2=qtwidts.QGridLayout（self.frame） self.gridLayout_2.setObjectName（“gridLayout_2”） self.image_title=qtwidts.QLabel（self.frame） sizePolicy=qtwidts.QSizePolicy（qtwidts.QSizePolicy.expansing，qtwidts.QSizePolicy.expansing） sizePolicy.setHorizontalStretch（0） sizePolicy.setVerticalStretch（0） sizePolicy.setHeightForWidth（self.image\u title.sizePolicy（）.hasHeightForWidth（）） self.image_title.setSizePolicy（sizePolicy） self.image\u title.setAlignment（QtCore.Qt.AlignCenter） self.image\u title.setWordWrap（True） self.image\u title.setStyleSheet（“QLabel{\n顺序：无；\n}”） self.gridLayout_2.addWidget（self.image_title，1,0,1,3） self.image=qtwidts.QLabel（self.frame） sizePolicy=qtwidts.QSizePolicy（qtwidts.QSizePolicy.expansing，qtwidts.QSizePolicy.expansing） sizePolicy.setHorizontalStretch（0） sizePolicy.setVerticalStretch（0） sizePolicy.setHeightForWidth（self.image.sizePolicy（）.hasHeightForWidth（）） self.image.setSizePolicy（sizePolicy） self.image.setMinimumSize（QtCore.QSize（150150）） self.image.setMaximumSize（QtCore.QSize（150150）） self.image.setText（“”） self.image.setScaledContents（True） self.image.setObjectName（“图像”） self.gridLayout_2.addWidget（self.image，0,1,1） SpaceItem=qtwidts.QSpacerItem（40,20，qtwidts.QSizePolicy.expansing，qtwidts.QSizePolicy.Minimum） self.gridLayout_2.addItem（间隔项，0,2,1,1） SpaceItem1=qtwidts.QSpacerItem（40,20，qtwidts.QSizePolicy.expansing，qtwidts.QSizePolicy.Minimum） self.gridLayout_2.addItem（间隔项1,0,0,1,1） pixmap=QPixmap（“test.png”）。缩放到最大高度（150） self.image.setPixmap（pixmap） self.image.setScaledContents（True） self.image.resize（150150） self.image\u title.setText（“\n\n test.png”） self.frame.update（） self.cell\u ready.emit（player\u list\u row，j，self.frame） 时间。睡眠（1） #如果删除上行，则存在分段错误 self.table_ready.emit（） 类示例\u代码： 定义初始化（自）： self.app=qtwidts.QApplication（sys.argv） self.app.addLibraryPath（r“C:/Python/Lib/site packages/qt5_applications/Qt/plugins/imageformats”） self.app.setStyle（“Fusion”） self.mainWindow=qtwidts.QMainWindow（） self.main\u ui=ui\u主窗口（） self.main\u ui.setupUi（self.main窗口） self.mainWindow.showMaximized（） #将值设置为QSlider的QTimer self.slider\u位置=0 self.timer=QTimer（） self.timer.timeout.connect（self.move\u滑块） 自动定时器启动（125） #显示表格内容 self.display_table（） #按按钮刷新表格 self.main\u ui.refresh\u table.clicked.connect（self.refresh\u table\u方法） sys.exit（self.app.exec) def刷新_表_方法（自）： self.thread=QThread（） self.worker=worker（） self.worker.moveToThread（self.thread） self.thread.started.connect（self.worker.run） self.worker.table_ready.connect（self.thread.quit） self.worker.table_ready.connect（self.worker.deleteLater） self.thread.finished.connect（self.thread.deleteLater） self.thread.start（） self.worker.set\u row\u count.connect（self.set\u row\u count\u方法） self.worker.insert\u row.connect（self.insert\u new\u row） self.worker.cell\u ready.connect（self.display\u cell） self.worker.table\u就绪。连接（self.refresh\u完成） def set_row_count_方法（自身，行）： self.main\u ui.player\u list\u table.setRowCount（行） def插入新行（自身，行）： self.main\u ui.player\u list\u选项卡