How to communicate or switch between two windows in PyQt?

Question

I am developing an application using python and Qt.

I have designed 2 Main windows ie..QMainWindow (Not QWidget or QDialog) using Qt.

Let it be.

1.

Answer 1

Although this is not directly relevant to your question, you should always set QLineEdit.EchoMode for the password field as follows (see here):

self.password.setEchoMode(QtGui.QLineEdit.Password)