这是必须调用UI类的类：
class mainpanelManager(QtGui.QGuiApplication, Ui_MainWindow):
def __init__(self):
QtGui.QGuiApplication.__init__(self)
Ui_MainWindow.__init__(self)
self.setupUi(self)
if __name__ == "__main__":
app = QtGui.QGuiApplication(sys.argv)
window = mainpanelManager()
window.show()
sys.exit(app.exec_())
这是UI类（从QtCreator和Qt5.7生成）：
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(QtGui.QWindow):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(1155, 704)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.listView = QtWidgets.QListView(self.centralwidget)
self.listView.setMaximumSize(QtCore.QSize(300, 16777215))
self.listView.setObjectName("listView")
self.gridLayout.addWidget(self.listView, 1, 0, 1, 1)
self.tabWidget = QtWidgets.QTabWidget(self.centralwidget)
self.tabWidget.setFocusPolicy(QtCore.Qt.NoFocus)
self.tabWidget.setObjectName("tabWidget")
self.tab = QtWidgets.QWidget()
self.tab.setObjectName("tab")
self.gridLayout_2 = QtWidgets.QGridLayout(self.tab)
self.gridLayout_2.setContentsMargins(0, 0, 0, 0)
self.gridLayout_2.setObjectName("gridLayout_2")
self.listWidget_2 = QtWidgets.QListWidget(self.tab)
self.listWidget_2.setFrameShape(QtWidgets.QFrame.NoFrame)
self.listWidget_2.setFrameShadow(QtWidgets.QFrame.Plain)
self.listWidget_2.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
self.listWidget_2.setIconSize(QtCore.QSize(100, 100))
self.listWidget_2.setViewMode(QtWidgets.QListView.IconMode)
self.listWidget_2.setModelColumn(0)
self.listWidget_2.setObjectName("listWidget_2")
self.gridLayout_2.addWidget(self.listWidget_2, 0, 0, 1, 1)
self.tabWidget.addTab(self.tab, "")
self.tab_2 = QtWidgets.QWidget()
self.tab_2.setObjectName("tab_2")
self.gridLayout_3 = QtWidgets.QGridLayout(self.tab_2)
self.gridLayout_3.setContentsMargins(0, 0, 0, 0)
self.gridLayout_3.setObjectName("gridLayout_3")
self.listWidget = QtWidgets.QListWidget(self.tab_2)
self.listWidget.setViewMode(QtWidgets.QListView.IconMode)
self.listWidget.setObjectName("listWidget")
self.gridLayout_3.addWidget(self.listWidget, 0, 0, 1, 1)
self.tabWidget.addTab(self.tab_2, "")
self.gridLayout.addWidget(self.tabWidget, 1, 1, 1, 1)
self.verticalLayout = QtWidgets.QVBoxLayout()
self.verticalLayout.setObjectName("verticalLayout")
self.label_2 = QtWidgets.QLabel(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.label_2.sizePolicy().hasHeightForWidth())
self.label_2.setSizePolicy(sizePolicy)
self.label_2.setMinimumSize(QtCore.QSize(300, 130))
self.label_2.setMaximumSize(QtCore.QSize(300, 100))
self.label_2.setText("")
self.label_2.setObjectName("label_2")
self.verticalLayout.addWidget(self.label_2)
self.horizontalSlider_2 = QtWidgets.QSlider(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.horizontalSlider_2.sizePolicy().hasHeightForWidth())
self.horizontalSlider_2.setSizePolicy(sizePolicy)
self.horizontalSlider_2.setMinimumSize(QtCore.QSize(300, 40))
self.horizontalSlider_2.setMaximumSize(QtCore.QSize(300, 16777215))
self.horizontalSlider_2.setOrientation(QtCore.Qt.Horizontal)
self.horizontalSlider_2.setObjectName("horizontalSlider_2")
self.verticalLayout.addWidget(self.horizontalSlider_2)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setSizeConstraint(QtWidgets.QLayout.SetMinimumSize)
self.horizontalLayout.setSpacing(0)
self.horizontalLayout.setObjectName("horizontalLayout")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.pushButton.sizePolicy().hasHeightForWidth())
self.pushButton.setSizePolicy(sizePolicy)
self.pushButton.setMinimumSize(QtCore.QSize(50, 30))
self.pushButton.setMaximumSize(QtCore.QSize(50, 30))
self.pushButton.setBaseSize(QtCore.QSize(50, 30))
self.pushButton.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton.setText("")
self.pushButton.setIconSize(QtCore.QSize(30, 30))
self.pushButton.setObjectName("pushButton")
self.horizontalLayout.addWidget(self.pushButton)
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.pushButton_2.sizePolicy().hasHeightForWidth())
self.pushButton_2.setSizePolicy(sizePolicy)
self.pushButton_2.setMinimumSize(QtCore.QSize(50, 30))
self.pushButton_2.setMaximumSize(QtCore.QSize(50, 30))
self.pushButton_2.setBaseSize(QtCore.QSize(50, 30))
self.pushButton_2.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_2.setText("")
self.pushButton_2.setIconSize(QtCore.QSize(30, 30))
self.pushButton_2.setObjectName("pushButton_2")
self.horizontalLayout.addWidget(self.pushButton_2)
self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.pushButton_3.sizePolicy().hasHeightForWidth())
self.pushButton_3.setSizePolicy(sizePolicy)
self.pushButton_3.setMinimumSize(QtCore.QSize(50, 30))
self.pushButton_3.setMaximumSize(QtCore.QSize(50, 30))
self.pushButton_3.setBaseSize(QtCore.QSize(50, 30))
self.pushButton_3.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_3.setText("")
self.pushButton_3.setIconSize(QtCore.QSize(30, 30))
self.pushButton_3.setObjectName("pushButton_3")
self.horizontalLayout.addWidget(self.pushButton_3)
self.pushButton_4 = QtWidgets.QPushButton(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.pushButton_4.sizePolicy().hasHeightForWidth())
self.pushButton_4.setSizePolicy(sizePolicy)
self.pushButton_4.setMinimumSize(QtCore.QSize(50, 30))
self.pushButton_4.setMaximumSize(QtCore.QSize(50, 30))
self.pushButton_4.setBaseSize(QtCore.QSize(50, 30))
self.pushButton_4.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_4.setText("")
self.pushButton_4.setIconSize(QtCore.QSize(30, 30))
self.pushButton_4.setObjectName("pushButton_4")
self.horizontalLayout.addWidget(self.pushButton_4)
self.pushButton_5 = QtWidgets.QPushButton(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.pushButton_5.sizePolicy().hasHeightForWidth())
self.pushButton_5.setSizePolicy(sizePolicy)
self.pushButton_5.setMinimumSize(QtCore.QSize(50, 30))
self.pushButton_5.setMaximumSize(QtCore.QSize(50, 30))
self.pushButton_5.setBaseSize(QtCore.QSize(50, 30))
self.pushButton_5.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_5.setText("")
self.pushButton_5.setIconSize(QtCore.QSize(30, 30))
self.pushButton_5.setObjectName("pushButton_5")
self.horizontalLayout.addWidget(self.pushButton_5)
self.verticalLayout.addLayout(self.horizontalLayout)
self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 1)
self.verticalLayout_2 = QtWidgets.QVBoxLayout()
self.verticalLayout_2.setObjectName("verticalLayout_2")
self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
self.horizontalLayout_3.setObjectName("horizontalLayout_3")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setText("")
self.label.setObjectName("label")
self.horizontalLayout_3.addWidget(self.label)
self.label_3 = QtWidgets.QLabel(self.centralwidget)
sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.label_3.sizePolicy().hasHeightForWidth())
self.label_3.setSizePolicy(sizePolicy)
self.label_3.setMinimumSize(QtCore.QSize(180, 180))
self.label_3.setMaximumSize(QtCore.QSize(180, 180))
self.label_3.setText("")
self.label_3.setObjectName("label_3")
self.horizontalLayout_3.addWidget(self.label_3)
self.verticalLayout_2.addLayout(self.horizontalLayout_3)
self.horizontalSlider = QtWidgets.QSlider(self.centralwidget)
self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
self.horizontalSlider.setObjectName("horizontalSlider")
self.verticalLayout_2.addWidget(self.horizontalSlider)
self.gridLayout.addLayout(self.verticalLayout_2, 0, 1, 1, 1)
self.horizontalSlider_3 = QtWidgets.QSlider(self.centralwidget)
self.horizontalSlider_3.setOrientation(QtCore.Qt.Horizontal)
self.horizontalSlider_3.setObjectName("horizontalSlider_3")
self.gridLayout.addWidget(self.horizontalSlider_3, 2, 1, 1, 1)
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.pushButton_6 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_6.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_6.setText("")
self.pushButton_6.setObjectName("pushButton_6")
self.horizontalLayout_2.addWidget(self.pushButton_6)
self.pushButton_7 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_7.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_7.setText("")
self.pushButton_7.setObjectName("pushButton_7")
self.horizontalLayout_2.addWidget(self.pushButton_7)
self.pushButton_8 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_8.setFocusPolicy(QtCore.Qt.NoFocus)
self.pushButton_8.setText("")
self.pushButton_8.setObjectName("pushButton_8")
self.horizontalLayout_2.addWidget(self.pushButton_8)
self.gridLayout.addLayout(self.horizontalLayout_2, 2, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 1155, 19))
self.menubar.setObjectName("menubar")
self.menuFile = QtWidgets.QMenu(self.menubar)
self.menuFile.setObjectName("menuFile")
self.menuSettings = QtWidgets.QMenu(self.menubar)
self.menuSettings.setObjectName("menuSettings")
self.menuLibrary = QtWidgets.QMenu(self.menuSettings)
self.menuLibrary.setObjectName("menuLibrary")
self.menuAbout = QtWidgets.QMenu(self.menubar)
self.menuAbout.setObjectName("menuAbout")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.actionOpen = QtWidgets.QAction(MainWindow)
self.actionOpen.setObjectName("actionOpen")
self.actionOpen_Dir = QtWidgets.QAction(MainWindow)
self.actionOpen_Dir.setObjectName("actionOpen_Dir")
self.actionMinimize = QtWidgets.QAction(MainWindow)
self.actionMinimize.setObjectName("actionMinimize")
self.actionClose = QtWidgets.QAction(MainWindow)
self.actionClose.setObjectName("actionClose")
self.actionGeneral = QtWidgets.QAction(MainWindow)
self.actionGeneral.setObjectName("actionGeneral")
self.actionRefresh = QtWidgets.QAction(MainWindow)
self.actionRefresh.setObjectName("actionRefresh")
self.actionRebuild = QtWidgets.QAction(MainWindow)
self.actionRebuild.setObjectName("actionRebuild")
self.actionClear = QtWidgets.QAction(MainWindow)
self.actionClear.setObjectName("actionClear")
self.actionSettings = QtWidgets.QAction(MainWindow)
self.actionSettings.setObjectName("actionSettings")
self.actionAbout_Siren = QtWidgets.QAction(MainWindow)
self.actionAbout_Siren.setObjectName("actionAbout_Siren")
self.actionCheck_for_updates = QtWidgets.QAction(MainWindow)
self.actionCheck_for_updates.setObjectName("actionCheck_for_updates")
self.menuFile.addAction(self.actionOpen)
self.menuFile.addAction(self.actionOpen_Dir)
self.menuFile.addAction(self.actionMinimize)
self.menuFile.addAction(self.actionClose)
self.menuLibrary.addAction(self.actionRefresh)
self.menuLibrary.addAction(self.actionRebuild)
self.menuLibrary.addAction(self.actionClear)
self.menuLibrary.addAction(self.actionSettings)
self.menuSettings.addAction(self.menuLibrary.menuAction())
self.menuSettings.addAction(self.actionGeneral)
self.menuAbout.addAction(self.actionAbout_Siren)
self.menuAbout.addAction(self.actionCheck_for_updates)
self.menubar.addAction(self.menuFile.menuAction())
self.menubar.addAction(self.menuSettings.menuAction())
self.menubar.addAction(self.menuAbout.menuAction())
self.retranslateUi(MainWindow)
self.tabWidget.setCurrentIndex(0)
self.horizontalSlider_2.valueChanged['int'].connect(self.label_2.setNum)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.listWidget_2.setSortingEnabled(True)
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), _translate("MainWindow", "Artist"))
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), _translate("MainWindow", "Album"))
self.menuFile.setTitle(_translate("MainWindow", "File"))
self.menuSettings.setTitle(_translate("MainWindow", "Settings"))
self.menuLibrary.setTitle(_translate("MainWindow", "Library"))
self.menuAbout.setTitle(_translate("MainWindow", "About"))
self.actionOpen.setText(_translate("MainWindow", "Open"))
self.actionOpen_Dir.setText(_translate("MainWindow", "Open Dir..."))
self.actionMinimize.setText(_translate("MainWindow", "Minimize"))
self.actionClose.setText(_translate("MainWindow", "Close"))
self.actionGeneral.setText(_translate("MainWindow", "General"))
self.actionRefresh.setText(_translate("MainWindow", "Refresh"))
self.actionRebuild.setText(_translate("MainWindow", "Rebuild"))
self.actionClear.setText(_translate("MainWindow", "Clear"))
self.actionSettings.setText(_translate("MainWindow", "Settings"))
self.actionAbout_Siren.setText(_translate("MainWindow", "About Siren"))
self.actionCheck_for_updates.setText(_translate("MainWindow", "Check for updates"))
当我运行
class mainpanelManager时，出现此错误：QtGui.QGuiApplication.__init__(self)
TypeError: QGuiApplication(List[str]): not enough arguments
请给我一些建议，如何从另一个类运行UI类。
我究竟做错了什么？？我发现的样本使用的是
import PyQt4 import QtCore, QtGui, QtWidgets，但在我的情况下（使用Qt5），没有像QApplication那样的Qt4选项。似乎Qt5使用QtGui.QGuiApplication。我听不懂任何帮助都将受到欢迎。请详细说明。我对Python还是很陌生。 最佳答案
您需要一个子类，该子类与Qt Designer中的顶级对象匹配-在这种情况下，它看起来是QMainWindow：
class mainpanelManager(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
您应该使用
QApplication：if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
window = mainpanelManager()
window.show()
sys.exit(app.exec_())
PS：
PyQt4与PyQt5不兼容。请参阅：Differences Between PyQt4 and PyQt5。
PPS：
您似乎还试图编辑pyuic生成的模块。永远不要那样做。我建议您重新运行pyuic，以便获得干净的模块。