pyqt4 QtGui.QFileDialog.getSaveFileName clicke cancel Button

Question

I'm using PyQt4.

 filename = QtGui.QFileDialog.getSaveFileName(self, "Save file", "", "CSV files (*.csv)|*.csv")

Now when I click cancel button,the next code is executing. But, I don't want this instead I want it to do nothing. How can I achieve this?

If filename is None:

stop excute code.

Answer 1

If the user presses Cancel, getSaveFileName returns a null string.

You can use the fact that empty sequences are false. So, you should use:

if filename:

or

if not filename: