Guide to Creating a Registration Form in Python Using PyQT6

A detailed guide on how to create a registration form in Python using PyQT6, including how to add input fields and handle the registration button event.

In this article, you'll learn how to create an account registration form using PyQT6 in Python. We'll build an interface with input fields like username, email, password, and handle the event when the "Register" button is clicked.

Python Code

import sys  # System library for interacting with the Python interpreter
from PyQt6.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QVBoxLayout, QPushButton, QMessageBox  # Import required classes from PyQt6

# Create a RegisterForm class that inherits from QWidget
class RegisterForm(QWidget):
    def __init__(self):
        super().__init__()  # Call the constructor of the parent class QWidget
        self.initUI()  # Call a function to initialize the UI

    def initUI(self):
        self.setWindowTitle('Account Registration Form')  # Set the window title
        self.setGeometry(100, 100, 400, 300)  # Set the window's position and size (x, y, width, height)

        # Create a vertical box layout
        layout = QVBoxLayout()

        # Create and add input fields to the layout
        self.username_label = QLabel('Username:', self)
        layout.addWidget(self.username_label)
        self.username_input = QLineEdit(self)
        layout.addWidget(self.username_input)

        self.email_label = QLabel('Email:', self)
        layout.addWidget(self.email_label)
        self.email_input = QLineEdit(self)
        layout.addWidget(self.email_input)

        self.password_label = QLabel('Password:', self)
        layout.addWidget(self.password_label)
        self.password_input = QLineEdit(self)
        self.password_input.setEchoMode(QLineEdit.EchoMode.Password)  # Set password echo mode
        layout.addWidget(self.password_input)

        # Create and add the register button
        self.register_button = QPushButton('Register', self)
        self.register_button.clicked.connect(self.register)  # Connect the button click event to the register function
        layout.addWidget(self.register_button)

        # Set the main layout for the widget
        self.setLayout(layout)

    # Define the function to handle the register button click
    def register(self):
        username = self.username_input.text()
        email = self.email_input.text()
        password = self.password_input.text()

        if username and email and password:
            QMessageBox.information(self, 'Notification', f'Account {username} has been successfully registered!')
        else:
            QMessageBox.warning(self, 'Error', 'Please fill in all the fields!')

# Main part of the application
if __name__ == '__main__':
    app = QApplication(sys.argv)  # Initialize the QApplication object
    form = RegisterForm()  # Create an instance of the RegisterForm class
    form.show()  # Display the interface
    sys.exit(app.exec())  # Run the application's event loop

Detailed explanation:

1. import sys: Import the system library.
2. from PyQt6.QtWidgets import ...: Import the necessary classes from PyQt6.
3. class RegisterForm(QWidget): Define the RegisterForm class inheriting from QWidget.
4. def __init__(self): The constructor of the RegisterForm class.
5. self.initUI(): Call the initUI function to initialize the user interface.
6. self.setWindowTitle('...'): Set the window title.
7. self.setGeometry(...): Set the window position and size.
8. layout = QVBoxLayout(): Create a vertical box layout.
9. self.username_label = QLabel('...'): Create labels and input fields for username.
10. self.password_input.setEchoMode(...): Set the echo mode for the password input.
11. self.register_button.clicked.connect(...): Connect the button click event to the register function.
12. def register(self): Define the register function to handle the button click.
13. QMessageBox.information(...): Display a success or error message.

System requirements:

• Python 3.9 or above
• PyQT6

Installation instructions:

Use pip to install PyQt6:

pip install PyQt6

Advice:

• You can expand the registration form with more input fields like phone number or address.
• Consider learning how to store the registration data in a database to make a complete application.