from PyQt5 import QtWidgets
from w import W
import sys
 
class D(QtWidgets.QDialog):
    def __init__(self):
        super(D, self).__init__()
 
        self.btn = QtWidgets.QPushButton('Click me')
 
        layout = QtWidgets.QHBoxLayout()
        layout.addWidget(self.btn)
 
        self.setLayout(layout)
 
        self.btn.clicked.connect(self.runWin)
 
    def runWin(self):
        win = W('Test')
        win.show()
        self.close()
 
if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    login = D()
    login.show()
    app.exec()
 

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