How do I know which button is clicked in the popup window when using QFileDialog.getSaveFileName

Question

I am using QFileDialog module, and I encounter a problem: how do I know which button is clicked (save or cancel) in the popup window when using QFileDialog.getSaveFileName in PyQt5:

Answer 1

The QFileDialog::getSaveFileName() method returns an empty string if the file was not chosen, that is, when the cancel button is pressed, and instead a non-empty string when the save button is pressed:

filename, _ = QFileDialog.getSaveFileName()
if filename:
    print("The save button is pressed")
else:
    print("The cancel button is pressed")