Python-сообщество

 import data as mod
if __name__ == '__main__':
    
    object = mod.Facility()
    
    mod.mouse.visible = True
    
    mod.window.borderless = False
 
    object.run()

 from PyQt5 import QtCore, QtGui, QtWidgets
import main #1)
class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(1013, 854)
        self.label = QtWidgets.QLabel(Dialog)
        self.label.setGeometry(QtCore.QRect(10, 250, 171, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.label_2 = QtWidgets.QLabel(Dialog)
        self.label_2.setGeometry(QtCore.QRect(10, 340, 571, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_2.setFont(font)
        self.label_2.setObjectName("label_2")
        self.textEdit_2 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_2.setGeometry(QtCore.QRect(10, 380, 181, 31))
        self.textEdit_2.setObjectName("textEdit_2")
        self.label_3 = QtWidgets.QLabel(Dialog)
        self.label_3.setGeometry(QtCore.QRect(10, 440, 391, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_3.setFont(font)
        self.label_3.setObjectName("label_3")
        self.textEdit_3 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_3.setGeometry(QtCore.QRect(10, 480, 181, 31))
        self.textEdit_3.setObjectName("textEdit_3")
        self.label_4 = QtWidgets.QLabel(Dialog)
        self.label_4.setGeometry(QtCore.QRect(10, 530, 371, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_4.setFont(font)
        self.label_4.setObjectName("label_4")
        self.textEdit_4 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_4.setGeometry(QtCore.QRect(10, 560, 181, 31))
        self.textEdit_4.setObjectName("textEdit_4")
        self.label_5 = QtWidgets.QLabel(Dialog)
        self.label_5.setGeometry(QtCore.QRect(0, 610, 501, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_5.setFont(font)
        self.label_5.setObjectName("label_5")
        self.textEdit_5 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_5.setGeometry(QtCore.QRect(10, 660, 181, 31))
        self.textEdit_5.setObjectName("textEdit_5")
        self.label_6 = QtWidgets.QLabel(Dialog)
        self.label_6.setGeometry(QtCore.QRect(10, 710, 471, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_6.setFont(font)
        self.label_6.setObjectName("label_6")
        self.textEdit_6 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_6.setGeometry(QtCore.QRect(10, 750, 181, 31))
        self.textEdit_6.setObjectName("textEdit_6")
        self.label_7 = QtWidgets.QLabel(Dialog)
        self.label_7.setGeometry(QtCore.QRect(10, 170, 251, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_7.setFont(font)
        self.label_7.setObjectName("label_7")
        self.textEdit_7 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_7.setGeometry(QtCore.QRect(10, 210, 181, 31))
        self.textEdit_7.setObjectName("textEdit_7")
        self.label_8 = QtWidgets.QLabel(Dialog)
        self.label_8.setGeometry(QtCore.QRect(10, 20, 231, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_8.setFont(font)
        self.label_8.setObjectName("label_8")
        self.textEdit_8 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_8.setGeometry(QtCore.QRect(10, 60, 181, 31))
        self.textEdit_8.setObjectName("textEdit_8")
        self.label_9 = QtWidgets.QLabel(Dialog)
        self.label_9.setGeometry(QtCore.QRect(10, 100, 241, 31))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.label_9.setFont(font)
        self.label_9.setObjectName("label_9")
        self.textEdit_9 = QtWidgets.QTextEdit(Dialog)
        self.textEdit_9.setGeometry(QtCore.QRect(10, 140, 181, 31))
        self.textEdit_9.setObjectName("textEdit_9")
        self.comboBox = QtWidgets.QComboBox(Dialog)
        self.comboBox.setGeometry(QtCore.QRect(10, 290, 251, 41))
        font = QtGui.QFont()
        font.setPointSize(14)
        self.comboBox.setFont(font)
        self.comboBox.setObjectName("comboBox")
        self.comboBox.addItem("")
        self.comboBox.addItem("")
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(610, 20, 371, 111))
        font = QtGui.QFont()
        font.setPointSize(20)
        self.pushButton.setFont(font)
        self.pushButton.setObjectName("pushButton")
        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)
    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.label.setText(_translate("Dialog", "Выбор нагрузки"))
        self.label_2.setText(_translate("Dialog", "Линейная скорость распространения пожара(м/мин)"))
        self.label_3.setText(_translate("Dialog", "Расчет времени обнаружения(мин)"))
        self.label_4.setText(_translate("Dialog", "Расчет времени следования(мин)"))
        self.label_5.setText(_translate("Dialog", "Расчет времени боевого развертывания(мин)"))
        self.label_6.setText(_translate("Dialog", "Скорость передвижения персонала(м/мин)"))
        self.label_7.setText(_translate("Dialog", "Высота помещения(м)"))
        self.label_8.setText(_translate("Dialog", "Длина помещения(м)"))
        self.label_9.setText(_translate("Dialog", "Ширина помещения(м)"))
        self.comboBox.setItemText(0, _translate("Dialog", "Склад льноволокна"))
        self.comboBox.setItemText(1, _translate("Dialog", "Верхняя одежда;ворс, ткани (шерсть+нейлон)"))
        self.pushButton.setText(_translate("Dialog", "Открыть 3d проект"))
class MyInst(QtWidgets.QWidget): #2-Весь блок(Ошибка в том,что нельзя обращаться к файлу main напрямую,только к классу)
    def __init__(self, parent=None):
        super(main, self).__init__(parent)
        self.setupUi(self)
        
class Main(QtWidgets.QWidget,Ui_Dialog):                           
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)
        self.setupUi(self)
        self.pushButton.clicked.connect(self.onClicked)
        
    def onClicked(self):
        self.inst = MyInst()
        self.inst.show() #До этого момента включительно
if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    
    #Dialog = QtWidgets.QDialog() 3)Эти 4 строчки убираем
   # ui = Ui_Dialog()
   # ui.setupUi(Dialog)
    #Dialog.show()
    w=Main() #4) А эти 2 добавляем
    w.show()
    sys.exit(app.exec_())