Python QT designer Updating Label and Other stuff in python code issue and error

scientist1995 · wrote on 17 Feb 2019, 04:04

hello everyone i am a user interface that is designed in QT designer and have converted the.UI File into python file i need help and if anyone can assist me that would be really great. what i am trying to do is when i click the button i want to update the label similarly when i click button i want the slider value to be displayed on LCD i have already written the function inside which i am printing value of slide now i just need to display when i press button i went through lot of post on stack overflow and documentation i know label can be updated by using commands
self.l_username.setText("hello world")

since i am new i don't know i tried all solutions and now looking for someone who can assist me

the code is attached below

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

# Form implementation generated from reading ui file 'TEST.ui'
#
# Created by: PyQt5 UI code generator 5.12
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):

    def setupUi(self, Form):

        Form.setObjectName("Form")
        Form.resize(549, 429)
        self.btn_submit = QtWidgets.QPushButton(Form)
        self.btn_submit.setGeometry(QtCore.QRect(150, 170, 113, 32))
        self.btn_submit.setObjectName("btn_submit")

        self.textEdit = QtWidgets.QTextEdit(Form)
        self.textEdit.setGeometry(QtCore.QRect(20, 10, 481, 31))
        self.textEdit.setObjectName("textEdit")

        self.l_username = QtWidgets.QLabel(Form)
        self.l_username.setGeometry(QtCore.QRect(50, 80, 60, 16))
        self.l_username.setObjectName("l_username")

        self.l_password = QtWidgets.QLabel(Form)
        self.l_password.setGeometry(QtCore.QRect(50, 120, 60, 16))
        self.l_password.setObjectName("l_password")

        self.txt_username = QtWidgets.QLineEdit(Form)
        self.txt_username.setGeometry(QtCore.QRect(150, 80, 251, 21))
        self.txt_username.setObjectName("txt_username")

        self.txt_password = QtWidgets.QLineEdit(Form)
        self.txt_password.setGeometry(QtCore.QRect(150, 120, 251, 21))
        self.txt_password.setObjectName("txt_password")

        self.radioButton = QtWidgets.QRadioButton(Form)
        self.radioButton.setGeometry(QtCore.QRect(270, 170, 151, 20))
        self.radioButton.setObjectName("radioButton")

        self.btn_newuser = QtWidgets.QPushButton(Form)
        self.btn_newuser.setGeometry(QtCore.QRect(150, 200, 113, 32))
        self.btn_newuser.setObjectName("btn_newuser")
        self.time_value = QtWidgets.QTimeEdit(Form)
        self.time_value.setGeometry(QtCore.QRect(30, 260, 118, 24))
        self.time_value.setObjectName("time_value")
        self.date_value = QtWidgets.QDateEdit(Form)
        self.date_value.setGeometry(QtCore.QRect(170, 260, 110, 24))
        self.date_value.setObjectName("date_value")

        self.slider_x = QtWidgets.QSlider(Form)
        self.slider_x.setGeometry(QtCore.QRect(160, 330, 160, 22))
        self.slider_x.setOrientation(QtCore.Qt.Horizontal)
        self.slider_x.setObjectName("slider_x")


        self.lcd_output = QtWidgets.QLCDNumber(Form)
        self.lcd_output.setGeometry(QtCore.QRect(330, 260, 64, 23))
        self.lcd_output.setObjectName("lcd_output")

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

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.btn_submit.setText(_translate("Form", "Submit"))
        self.textEdit.setHtml(_translate("Form", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n"
"<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n"
"p, li { white-space: pre-wrap; }\n"
"</style></head><body style=\" font-family:\'.SF NS Text\'; font-size:13pt; font-weight:400; font-style:normal;\">\n"
"<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">Login Page</p></body></html>"))
        self.l_username.setText(_translate("Form", "username"))
        self.l_password.setText(_translate("Form", "password"))
        self.radioButton.setText(_translate("Form", "Keep me Signed in"))
        self.btn_newuser.setText(_translate("Form", "New User"))
        self.btn_submit.clicked.connect(self.btn_submit_handler)


    def update_label(self):

        print("Inside")
        
        self.Ui_Form.l_username.setText("Hello")


    def update_LCD(self):
        val = self.slider_x.value()
        print("SLIDER VALUE IS ", val)
        self.lcd_output.display(val)


    def btn_submit_handler(self):
        self.update_label()

        print("Button clicked ")
        print(self.time_value.text())
        print(self.date_value.text())
        print(self.slider_x.value())


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Form = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(Form)
    Form.show()
    sys.exit(app.exec_())