it might help to run QT in debug mode the whole MVC stuff has a lot of asserts, so you might be informed earlier on on what goes wrong
On Wed, Mar 30, 2011 at 8:45 PM, Keith Gunderson <[email protected]> wrote: > > Hello, > > New PySide user here with an issue that my app/script crashes sometimes > when QTableWidget.clear() is called. It is reproducible but I can't > understand why it crashes when it does. > > The script fills the table with data from an array that meet some > criteria. I select a cell/ row and press a button that causes all the data > from the selected row to be written to a file. Then the table is cleared > and re-filled with a new set of data. If I select a certain cell from > certain sets, the crash occurs. But selecting the same cell in other sets > doesn't cause the crash. Selecting a different cell in the same row/ same > set as 'crasher selection' can prevent the crash. Crashes occur perhaps > about 2% of the time. I can't understand why it occurs, but then again I > know very little about Qt and its MVC classes. > > Here is some code: > > The window: > > from PySide import QtCore, QtGui > > class Ui_MainWindow(object): > def setupUi(self, MainWindow): > MainWindow.setObjectName("MainWindow") > MainWindow.resize(800, 600) > self.centralwidget = QtGui.QWidget(MainWindow) > self.centralwidget.setObjectName("centralwidget") > self.verticalLayoutWidget = QtGui.QWidget(self.centralwidget) > self.verticalLayoutWidget.setGeometry(QtCore.QRect(170, 20, 160, > 80)) > self.verticalLayoutWidget.setObjectName("verticalLayoutWidget") > self.verticalLayout = QtGui.QVBoxLayout(self.verticalLayoutWidget) > self.verticalLayout.setMargin(0) > self.verticalLayout.setObjectName("verticalLayout") > self.tableWidget = QtGui.QTableWidget(self.centralwidget) > self.tableWidget.setGeometry(QtCore.QRect(10, 110, 781, 451)) > self.tableWidget.setObjectName("tableWidget") > self.tableWidget.setColumnCount(0) > self.tableWidget.setRowCount(0) > > > The app: > > def main(): > > array1 = numpy.loadtxt(open("aa_count.csv"), delimiter=',', > dtype={'names' :('dh', 'ds', 'count' ), 'formats': ('f4', 'f4', 'i4' ) } ) > array2 = numpy.loadtxt(open("aa_full.csv"), delimiter=',', > dtype={'names' :('id', 'dh', 'ds', 'name1', 'name2', 'name3', 'name4' ), > 'formats': ('i4', 'f4', 'f4', 'S2', 'S2', 'S2', 'S2' ) } ) > > writer1 = csv.writer(open("aa_prime.csv", "wb"), dialect = 'excel' ) > > app = QApplication(sys.argv) > frame = MainWindow(dataArray = array2, dataCounts = array1, > outWriter=writer1) > frame.show() > > > app.exec_() > > > > The Window Class > > > class MainWindow( QMainWindow, Ui_MainWindow): > def __init__(self, parent= None, dataArray=None, dataCounts = None, > outWriter = None): > super( MainWindow,self).__init__(parent) > self.setupUi(self) > self.outWriter = outWriter > self.dataArray = dataArray > self.dataCounts = dataCounts > self.dataCountRow = 0 > self.tableWidget.setColumnCount( 7 ) > > #filling the table > > def showGroup(self): > self.tableWidget.clear() > self.tableWidget.setHorizontalHeaderLabels( > self.dataArray.dtype.names ) > dhval = self.dataCounts[self.dataCountRow ] ['dh'] > dsval = self.dataCounts[self.dataCountRow ] ['ds'] > activeRows = self.dataArray[ (self.dhs == dhval) * (self.dss == > dsval) ] > self.rowNumber.setText( str( self.dataCountRow + 1 ) ) > irow = 0 > for rowX in activeRows: > if not self.filterRow( rowX): > irow += 1 > self.tableWidget.setRowCount( irow ) > irow = 0 > for rowX in activeRows: > if not self.filterRow( rowX): > self.tableWidget.setItem( irow, 0, QTableWidgetItem( > self.tr(str( rowX[0] ))) ) > self.tableWidget.setItem( irow, 1, QTableWidgetItem( > self.tr(str( rowX[1] ))) ) > self.tableWidget.setItem( irow, 2, QTableWidgetItem( > self.tr(str( rowX[2] ))) ) > self.tableWidget.setItem( irow, 3, QTableWidgetItem( > self.tr(str( rowX[3] ))) ) > self.tableWidget.setItem( irow, 4, QTableWidgetItem( > self.tr(str( rowX[4] ))) ) > self.tableWidget.setItem( irow, 5, QTableWidgetItem( > self.tr(str( rowX[5] ))) ) > self.tableWidget.setItem( irow, 6, QTableWidgetItem( > self.tr(str( rowX[6] ))) ) > irow += 1 > self.tableWidget.setFocus() > > > #getting the data out of the table > def acceptSelectedRow(self): > import pdb > # pdb.set_trace() > item = self.tableWidget.currentItem() > if item and item.row() >= 0: > rowNum = item.row() > rows = [] > for col in xrange(self.tableWidget.columnCount() ): > it = self.tableWidget.item( rowNum, col) > rows.append( it.text() ) > if self.outWriter: > self.outWriter.writerow ( rows ) > item = None > self.nextGroup() > > > _______________________________________________ > PySide mailing list > [email protected] > http://lists.pyside.org/listinfo/pyside > >
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