import sys
from PySide import QtGui


def print_something():
    print "print_something called"


class Row(object):
    def __init__(self, table, row_idx):
        self.table = table
        self.row = row_idx

    def print_str(self):
        print "Row.print_str called"

    def add_to_table(self):
        sbox = QtGui.QSpinBox(self.table)
        sbox.valueChanged.connect(self.print_str)
        self.table.setCellWidget(self.row, 0, sbox)


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)

    w = QtGui.QMainWindow()

    t = QtGui.QTableWidget(w)
    t.setFixedWidth(800)
    t.setFixedHeight(600)
    t.setColumnCount(1)
    t.setRowCount(10)
    t.setColumnCount(10)

    # these are saved in a list
    # and so seem to work
    rows = []
    for x in range(0, 5):
        row = Row(t, x)
        row.add_to_table()
        rows.append(row)

    # these rows don't work
    # presumably due to a garbage
    # collection/reference counting bug
    for x in range(5, 10):
        row = Row(t, x)
        row.add_to_table()

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