from PySide6.QtTest import QTest
from PySide6.QtWidgets import QApplication, QMainWindow, QTableWidget, QTableWidgetItem

def fun(run):
    print(f"Run {run}")

    table = QTableWidget(1, 1)
    item = QTableWidgetItem()
    table.setItem(0, 0, item)
    table.clearSelection()

    if run == 0:
        # This works fine
        table.selectRow(0)
    if run == 1:
        # *After QTest.keySequence*, selectRow does not seem to do anything:
        table.selectRow(0)
    elif run == 2:
        # Same with selectColumn
        table.selectColumn(0)
    elif run == 3:
        # By contrast, selectAll does work:
        table.selectAll()

    if table.selectedItems() == [item]:
        print("Pass")
    else:
        print("Fail")
    print()

if __name__ == "__main__":
    application = QApplication()
    window = QMainWindow()

    fun(0)
    QTest.keySequence(window, "Shift+A")

    fun(1)
    fun(2)
    fun(3)