@staticmethod
    def _get_or_add_xml_to_member(clsdict):
        """
        Add the xml -> enum value mapping to the enumeration class state
        """
        if clsdict not in '_xml_to_member':
            clsdict['_xml_to_member'] = dict()
        return clsdict['_xml_to_member']
dataset/ETHPy150Open scanny/python-pptx/pptx/enum/base.py/XmlMappedEnumMember._get_or_add_xml_to_member/swapped operands of `not in`