import sys, os
from PyQt5.QtWidgets import QFileDialog
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(407, 156)
        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(20, 20, 371, 31))
        font = QtGui.QFont()
        font.setPointSize(12)
        self.label.setFont(font)
        self.label.setLayoutDirection(QtCore.Qt.LeftToRight)
        self.label.setAlignment(QtCore.Qt.AlignCenter)
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(20, 82, 171, 51))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(Form)
        self.pushButton_2.setGeometry(QtCore.QRect(210, 82, 171, 51))
        self.pushButton_2.setObjectName("pushButton_2")
        self.label_2 = QtWidgets.QLabel(Form)
        self.label_2.setGeometry(QtCore.QRect(20, 45, 371, 21))
        font = QtGui.QFont()
        font.setPointSize(10)
        self.label_2.setFont(font)
        self.label_2.setAlignment(QtCore.Qt.AlignCenter)
        self.label_2.setObjectName("label_2")

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

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Convertor Ui - Py"))
        self.label.setText(_translate("Form", "Select File and press \"Convert\""))
        self.pushButton.setText(_translate("Form", "Select file"))
        self.pushButton_2.setText(_translate("Form", "Convert"))
        self.label_2.setText(_translate("Form", ""))

app = QtWidgets.QApplication(sys.argv)
Form = QtWidgets.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()

fileName = []

def file_dialog():
    global fileName
    dialog_name = "Select file"
    folder_init_name = 'C:/'
    fileName = QFileDialog.getOpenFileName(None, dialog_name, folder_init_name, "*.ui")


def buttonone():
    global fileName
    if fileName != []:
        result = str(fileName[0])
        result = result.replace(".ui", ".py")
        command = 'pyuic5 ' + fileName[0] + ' -x -o ' + result
        if os.system(command) == 0:
            ui.label.setGeometry(QtCore.QRect(20, 10, 371, 31))
            ui.label.setText(QtWidgets.QApplication.translate("Form", "Converting sucsesseful!", None, -1))
            ui.label_2.setText(QtWidgets.QApplication.translate("Form", "(Select another File or close the application)", None, -1))
            fileName = []
        else:
            ui.label.setText(QtWidgets.QApplication.translate("Form", "Converting failure!", None, -1))
    else:
        ui.label.setGeometry(QtCore.QRect(20, 20, 371, 31))
        ui.label_2.setText(QtWidgets.QApplication.translate("Form", None, None, -1))
        ui.label.setText(QtWidgets.QApplication.translate("Form", "Select File first!!", None, -1))


ui.pushButton.clicked.connect(file_dialog)
ui.pushButton_2.clicked.connect(buttonone)

sys.exit(app.exec_())