uifile.py

from PyQt5.QtWidgets import (QApplication, QComboBox, QDialog,
        QDialogButtonBox, QFormLayout, QGridLayout, QGroupBox, QHBoxLayout,
        QLabel, QLineEdit, QMenu, QMenuBar, QPushButton, QSpinBox, QTextEdit,
        QVBoxLayout)
 
import sys
 
class Dialog(QDialog):
    NumGridRows = 10
    NumButtons = 5
 
    def __init__(self):
        super(Dialog, self).__init__()
        self.createFormGroupBox()
 
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        buttonBox.accepted.connect(self.accept)
        buttonBox.rejected.connect(self.reject)
 
        mainLayout = QVBoxLayout()
        mainLayout.addWidget(self.formGroupBox)
        mainLayout.addWidget(buttonBox)
		mainLayout.addWidget(buttonBox)
        self.setLayout(mainLayout)
 
        self.setWindowTitle("Form Layout - pythonspot.com")
 
    def createFormGroupBox(self):
        self.formGroupBox = QGroupBox("Form layout")
        layout = QFormLayout()
        layout.addRow(QLabel("Name:"), QLineEdit())
        layout.addRow(QLabel("Email:"), QLineEdit())
        layout.addRow(QLabel("Country:"), QComboBox())
        layout.addRow(QLabel("Age:"), QSpinBox())
        self.formGroupBox.setLayout(layout)
 
        def openFileNameDialog(self):    
        options = QFileDialog.Options()
        options |= QFileDialog.DontUseNativeDialog
        fileName, _ = QFileDialog.getOpenFileName(self,"QFileDialog.getOpenFileName()", "","All Files (*);;Python Files (*.py)", options=options)
        if fileName:
            print(fileName)
			
if __name__ == '__main__':
    app = QApplication(sys.argv)
    dialog = Dialog()
sys.exit(dialog.exec_())