def value_from_datadict(self, data, files, name):
        value = data.get(name, None)
        if value and value in ',':
            return data[name].split(',')
        if value:
            return [value]
        return None
dataset/ETHPy150Open dcramer/django-compositepks/django/contrib/admin/widgets.py/ManyToManyRawIdWidget.value_from_datadict/swapped operands of `in`