Python PySide6 QTableWidget

Python PySide6

About Lesson

In this lesson we want to learn about Python PySide6 QTableWidget, QTableWidget is subclass of the QAbstractItemView class and is used to display and edit tabular data. It is particularly useful when you want to display data in a table format, where each row represents an item or record, and each column represents a data field or attribute.

Creating a QTableWidget

For creating QTableWidget in PySide6, you can use the following code:

from PySide6.QtWidgets import QApplication, QTableWidget, QTableWidgetItem

# Create the application
app = QApplication([])

# Create a QTableWidget instance
table = QTableWidget()

# Set the number of rows and columns in the table
table.setRowCount(4)
table.setColumnCount(2)

# Set the headers for the table
table.setHorizontalHeaderLabels(['Name', 'Age'])

# Populate the table with data
table.setItem(0, 0, QTableWidgetItem('Bob'))
table.setItem(0, 1, QTableWidgetItem('25'))
table.setItem(1, 0, QTableWidgetItem('John'))
table.setItem(1, 1, QTableWidgetItem('30'))
table.setItem(2, 0, QTableWidgetItem('Charlie'))
table.setItem(2, 1, QTableWidgetItem('35'))
table.setItem(3, 0, QTableWidgetItem('David'))
table.setItem(3, 1, QTableWidgetItem('40'))

# Show the table
table.show()

# Run the application
app.exec()

from PySide6.QtWidgets import QApplication, QTableWidget, QTableWidgetItem

# Create the application

app = QApplication([])

# Create a QTableWidget instance

table = QTableWidget()

# Set the number of rows and columns in the table

table.setRowCount(4)

table.setColumnCount(2)

# Set the headers for the table

table.setHorizontalHeaderLabels(['Name', 'Age'])

# Populate the table with data

table.setItem(0, 0, QTableWidgetItem('Bob'))

table.setItem(0, 1, QTableWidgetItem('25'))

table.setItem(1, 0, QTableWidgetItem('John'))

table.setItem(1, 1, QTableWidgetItem('30'))

table.setItem(2, 0, QTableWidgetItem('Charlie'))

table.setItem(2, 1, QTableWidgetItem('35'))

table.setItem(3, 0, QTableWidgetItem('David'))

table.setItem(3, 1, QTableWidgetItem('40'))

# Show the table

table.show()

# Run the application

app.exec()

In this code we have created QTableWidget instance, set the number of rows and columns in the table, set the headers for the table, and populate the table with data using the setItem method. finally we have showed the table and run the application using the show and exec methods.

Run the code and this will be the result.

Styling a QTableWidget

By default QTableWidget has plain and unstyled appearance. however you can customize its appearance using style sheets. for example to change the background color of QTableWidget, you can use the following code:

# Create the QTableWidget
table = QTableWidget()

# Set the style sheet for the QTableWidget
table.setStyleSheet('background-color: #F5F5F5;')

# Create the QTableWidget

table = QTableWidget()

# Set the style sheet for the QTableWidget

table.setStyleSheet('background-color: #F5F5F5;')

In this code, we set the background color of the QTableWidget to a light gray color using a style sheet.

You can also set font and font size of the headers and cells using style sheets. for example to set the font of the headers to bold and increase the font size of the cells you can use the following code:

# Set the style sheet for the QTableWidget
table.setStyleSheet('QHeaderView::section { font-weight: bold; }'
                    'QTableWidget { font-size: 16px; }')

# Set the style sheet for the QTableWidget

table.setStyleSheet('QHeaderView::section { font-weight: bold; }'

'QTableWidget { font-size: 16px; }')

In this code we set the font of the headers to bold using the QHeaderView::section selector and increase the font size of the cells using the QTableWidget selector.

This is OOP code for QTableWidget

from PySide6.QtWidgets import QApplication, QTableWidget, QTableWidgetItem, QVBoxLayout, QWidget

class TableWidget(QWidget):
    def __init__(self, data):
        super().__init__()
        self.data = data
        self.initUI()

    def initUI(self):
        # Create a QTableWidget instance
        self.table = QTableWidget()

        # Set the number of rows and columns in the table
        self.table.setRowCount(len(self.data))
        self.table.setColumnCount(len(self.data[0]))

        # Set the headers for the table
        headers = [str(i) for i in range(len(self.data[0]))]
        self.table.setHorizontalHeaderLabels(headers)

        # Populate the table with data
        for i, row in enumerate(self.data):
            for j, item in enumerate(row):
                self.table.setItem(i, j, QTableWidgetItem(str(item)))

        # Set the layout
        layout = QVBoxLayout()
        layout.addWidget(self.table)
        self.setLayout(layout)

if __name__ == '__main__':
    # Create the application
    app = QApplication([])

    # Create the table data
    data = [['Alice', 25], ['Bob', 30], ['Charlie', 35], ['David', 40]]

    # Create the TableWidget instance
    table_widget = TableWidget(data)

    # Show the TableWidget
    table_widget.show()

    # Run the application
    app.exec()

from PySide6.QtWidgets import QApplication, QTableWidget, QTableWidgetItem, QVBoxLayout, QWidget

class TableWidget(QWidget):

def __init__(self, data):

super().__init__()

self.data = data

self.initUI()

def initUI(self):

# Create a QTableWidget instance

self.table = QTableWidget()

# Set the number of rows and columns in the table

self.table.setRowCount(len(self.data))

self.table.setColumnCount(len(self.data[0]))

# Set the headers for the table

headers = [str(i) for i in range(len(self.data[0]))]

self.table.setHorizontalHeaderLabels(headers)

# Populate the table with data

for i, row in enumerate(self.data):

for j, item in enumerate(row):

self.table.setItem(i, j, QTableWidgetItem(str(item)))

# Set the layout

layout = QVBoxLayout()

layout.addWidget(self.table)

self.setLayout(layout)

if __name__ == '__main__':

# Create the application

app = QApplication([])

# Create the table data

data = [['Alice', 25], ['Bob', 30], ['Charlie', 35], ['David', 40]]

# Create the TableWidget instance

table_widget = TableWidget(data)

# Show the TableWidget

table_widget.show()

# Run the application

app.exec()

In this code we have created TableWidget class that inherits from QWidget. TableWidget class takes the table data as an argument in its constructor and initializes the UI in the initUI method. initUI method creates QTableWidget instance, sets the number of rows and columns, sets the headers, populates the table with data and sets the layout.

For using TableWidget class we have created an instance of it with the table data and show it. The app.exec() method starts the event loop which allows application to run.