def get_diff(self, original, current, dry_run=False):
        data = []
        dmp = diff_match_patch()
        for field in self.get_fields():
            v1 = self.export_field(field, original) if original else ""
            v2 = self.export_field(field, current) if current else ""
            diff = dmp.diff_main(force_text(v1), force_text(v2))
            dmp.diff_cleanupSemantic(diff)
            html = dmp.diff_prettyHtml(diff)
            html = mark_safe(html)
            data.append(html)
        return data
Get diff between original and current object when ``import_data``
dataset/ETHPy150Open django-import-export/django-import-export/import_export/resources.py/Resource.get_diff