from PyQt4.QtGui import *
import sys

app = QApplication(sys.argv)
tbl = QTableWidget( 5, 5)

tbl.dragEnabled()
tbl.setDragDropMode(QAbstractItemView.DragDrop)
tbl.setDropIndicatorShown(True)

def myDropEvent(event):
    event.acceptProposedAction()
    print tbl, event.pos(), tbl.itemAt(event.pos())
tbl.dropEvent=myDropEvent

tbl.show()
app.exec_()

from PyQt4.QtGui import *
import sys

app = QApplication(sys.argv)
tbl = QTableWidget( 5, 5)

tbl.dragEnabled()
tbl.setDragDropMode(QAbstractItemView.DragDrop)
tbl.setDropIndicatorShown(True)
   
def dropMimeData(row, column, data, action):
	print row, column, data, action
	return True

tbl.dropMimeData = dropMimeData
tbl.show()
app.exec_()

from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys

app = QApplication(sys.argv)
tbl = QTableWidget( 5, 5)

tbl.dragEnabled()
tbl.setDragDropMode(QAbstractItemView.DragDrop)
tbl.setDropIndicatorShown(True)

def mimeData(ar):
    if tbl.currentItem()<>None:
        md=QMimeData()
        md.setData("myMime", "%s" % tbl.currentItem().text())
        return md
tbl.mimeData=mimeData

def dropMimeData(row, column, data, action):
    print "dropMime",  data.data('myMime'), tbl.dropSource, tbl.dropMode
    return True
tbl.dropMimeData = dropMimeData

def dragEnterEvent(event):
    tbl.dropSource=event.source()
    if event.format()=="myMime":
        event.acceptProposedAction()
        if not event.keyboardModifiers()==Qt.ControlModifier:
            event.setDropAction(Qt.MoveAction)
        else:
            event.setDropAction(Qt.CopyAction)
tbl.dragEnterEvent=dragEnterEvent

def dragMoveEvent(event):
    dragEnterEvent(event)
tbl.dragMoveEvent=dragMoveEvent

def dropEvent(event):
    print "drop"
    if event.dropAction()==Qt.MoveAction:
        event.setDropAction(Qt.CopyAction)
        tbl.dropMode="move"
        QTableWidget.dropEvent(tbl, event)
    else:
        tbl.dropMode="copy"
        QTableWidget.dropEvent(tbl, event)
    event.accept()

tbl.dropEvent=dropEvent

tbl.setItem(0, 0, QTableWidgetItem(u"ggg"))
tbl.show()
app.exec_()

tbl.dropSource=event.source()