def clean(self):
        cleaned_data = self.cleaned_data
        title1 = cleaned_data.get("title1")
        title2 = cleaned_data.get("title2")
        if title1 == title2:
            raise forms.ValidationError("The two titles must be the same")
        return cleaned_data
dataset/ETHPy150Open django/django/tests/admin_inlines/admin.py/TitleForm.clean/operator `!=` -> `==`