How to make QTextTable to cover whole document width

I am trying to make the QTextTable inside QTextDocument to have 100% or full width of the document. But there is no method in QTextTableFormat class to format the QTextTable to have 100% width. We can resize row and column but not overall table.

Is there any way I can achieve that, if you know how, please share. Thanks

Since QTextTableFormat inherits from QTextFrameFormat it also has the setWidth() method that allows you to set the width using QTextLength as a basis that can set the width as a percentage of the document width:

import sys

from PyQt5 import QtCore, QtGui, QtWidgets

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    w = QtWidgets.QTextEdit()
    table = w.textCursor().insertTable(4, 5)

    fmt = table.format()
    fmt.setWidth(QtGui.QTextLength(QtGui.QTextLength.PercentageLength, 100))
    table.setFormat(fmt)

    w.show()
    sys.exit(app.exec_())