python - How to restrict user input in QLineEdit in pyqt -

i have qlineedit , want restrict qlineedit accept integers. should work inputmask. dont want use inputmask, because if user clicks on qlineedit cursor @ position mouse clicked. , user need navigate 0 position , type eve wants.

is there alternate this.

you can use exception handling validating this:

number = self.ui.number_lineedit.text() try:     number = int(number) except exception:     qtgui.qmessagebox.about(self, 'error','input can number')     pass 

you can use validators validate input strings.