import sys
from PyQt5.QtWidgets import QMainWindow, QApplication, QLabel, QWidget, QPushButton, QAction, QLineEdit, QMessageBox
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import pyqtSlot
if __name__ == "__main__":
app = QApplication(sys.argv)
w = QWidget()
w.resize(300, 300)
w.setWindowTitle('Calculator')
label = QLabel(w)
label.setText("Enter the number: ")
label.show()
w.Textbox = QLineEdit(w)
w.Textbox.move(0, 20)
w.show()
sys.exit(app.exec_())
