Creating a Log In Screen with PyQt5

PyQt5 is a set of Python bindings for the Qt application framework. It allows you to create desktop applications with a native look and feel. In this tutorial, we will learn how to create a simple log in screen using PyQt5.

Step 1: Install PyQt5

If you haven’t already installed PyQt5, you can do so using pip:

    pip install PyQt5
    

Step 2: Create a Log In Form

First, let’s create a new Python file and import the necessary modules:

    import sys
    from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QVBoxLayout
    

Next, let’s create a new class for our log in screen:

    class LoginScreen(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle('Log In')
            layout = QVBoxLayout()
            self.setLayout(layout)
            username_label = QLabel('Username:')
            layout.addWidget(username_label)
            self.username_input = QLineEdit()
            layout.addWidget(self.username_input)
            password_label = QLabel('Password:')
            layout.addWidget(password_label)
            self.password_input = QLineEdit()
            self.password_input.setEchoMode(QLineEdit.Password)
            layout.addWidget(self.password_input)
            login_button = QPushButton('Log In')
            login_button.clicked.connect(self.log_in)
            layout.addWidget(login_button)
        def log_in(self):
            username = self.username_input.text()
            password = self.password_input.text()
            # Add your log in logic here
    

Finally, let’s create the main application and show the log in screen:

    if __name__ == '__main__':
        app = QApplication(sys.argv)
        login_screen = LoginScreen()
        login_screen.show()
        sys.exit(app.exec_())
    

Step 3: Add Log In Logic

In the log_in method of the LoginScreen class, you can add your log in logic. This could be a simple username and password check, or you could connect to a database or an API to verify the credentials.

Conclusion

By following this tutorial, you should now have a simple log in screen created with PyQt5. You can further customize the UI, add error handling, and implement secure log in logic to fit your application’s requirements.