Exploring Card Permutations with PyQt and Qt Designer in Engineering Python 17E

In this tutorial, we will be learning how to create a PyQt application using Qt Designer to create a pick a card permutation game. We will be using Python 3.7 and PyQt5 for this tutorial.

Step 1: Installing PyQt5

Before we can start working on our PyQt application, we need to install the PyQt5 package. You can do this by running the following command in your terminal:

pip install pyqt5

Step 2: Installing Qt Designer

Qt Designer is a graphical tool that allows you to create Qt GUI applications easily. You can get Qt Designer by installing the PyQt5-tools package:

pip install pyqt5-tools

Step 3: Creating the UI with Qt Designer

Now that we have Qt Designer installed, we can use it to create the user interface for our pick a card permutation game. Open up Qt Designer and create a new file.

We will need a QLabel to display the card permutations, a QPushButton to pick a card, and a QListWidget to display the selected cards. Arrange these widgets however you like on the form.

Step 4: Converting the UI file to Python code

After you have finished designing the UI in Qt Designer, save the file as pick_a_card.ui. Now, we need to convert this UI file to Python code that can be used in our application. You can do this using the following command:

pyuic5 -o pick_a_card_ui.py pick_a_card.ui

This will generate a Python file named pick_a_card_ui.py that contains the code for the UI layout.

Step 5: Implementing the Game Logic

Now that we have our UI set up, we can start writing the game logic in Python. Create a new Python file named pick_a_card.py and import the necessary modules:

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from pick_a_card_ui import Ui_MainWindow

Next, create a class for the main window that extends QMainWindow and sets up the UI:

class PickACard(QMainWindow):
    def __init__(self):
        super().__init__()

        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

Now, we can add the logic for generating and displaying the card permutations when the "Pick a Card" button is clicked:

        self.ui.pick_button.clicked.connect(self.pick_card)

    def pick_card(self):
        cards = ['Hearts', 'Diamonds', 'Clubs', 'Spades']
        selected_cards = []

        for _ in range(4):
            card = random.choice(cards)
            selected_cards.append(card)

        self.ui.card_list.clear()
        for card in selected_cards:
            self.ui.card_list.addItem(card)

Step 6: Running the Application

To run the application, create an instance of the PickACard class and show the main window:

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

Save the pick_a_card.py file and run it in your terminal:

python pick_a_card.py

You should see the main window of the application with the button to pick a card and the list widget to display the selected cards. Clicking the button should generate a random permutation of the card suits and display them in the list widget.

Congratulations! You have successfully created a pick a card permutation game using PyQt and Qt Designer. Feel free to customize the application further or add more functionality to it.