в чем проблема?
как решить малой кровью?
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys
app = QApplication(sys.argv)
tbl = QTableWidget( 5, 5)
tbl.setItem(0, 0, QTableWidgetItem(u""))
tbl.setItem(1, 0, QTableWidgetItem(u""))
tbl.setCellWidget(0, 0, QLabel(u"1<B>11</B>1"))
tbl.setCellWidget(1, 0, QLabel(u"123"))
def tblclicked(index):
print "!", index.row()
tbl.clicked.connect(tblclicked)
tbl.show()
app.exec_()