Python method to call the FACTOR procedure

        Documentation link:
        https://go.documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=statug&docsetTarget=statug_factor_syntax.htm&locale=en

        :param data: SASdata object or string. This parameter is required.
        :parm by: The by variable can only be a string type.
        :parm cls: The cls variable can be a string or list type. It refers to the categorical, or nominal variables.
        :parm freq: The freq variable can only be a string type.
        :parm paired: The paired variable can only be a string type.
        :parm var: The var variable can only be a string type.
        :parm weight: The weight variable can only be a string type.
        :parm procopts: The procopts variable is a generic option available for advanced use. It can only be a string type.
        :parm stmtpassthrough: The stmtpassthrough variable is a generic option available for advanced use. It can only be a string type.
        :return: SAS Result Object

def factor(self, data: ['SASdata', str] = None,
               by: str = None,
               cls: [str, list] = None,
               freq: str = None,
               paired: str = None,
               var: str = None,
               weight: str = None,
               procopts: str = None,
               stmtpassthrough: str = None,
               **kwargs: dict) -> 'SASresults':
        """
        Python method to call the FACTOR procedure

        Documentation link:
        https://go.documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.4&docsetId=statug&docsetTarget=statug_factor_syntax.htm&locale=en

        :param data: SASdata object or string. This parameter is required.
        :parm by: The by variable can only be a string type.
        :parm cls: The cls variable can be a string or list type. It refers to the categorical, or nominal variables.
        :parm freq: The freq variable can only be a string type.
        :parm paired: The paired variable can only be a string type.
        :parm var: The var variable can only be a string type.
        :parm weight: The weight variable can only be a string type.
        :parm procopts: The procopts variable is a generic option available for advanced use. It can only be a string type.
        :parm stmtpassthrough: The stmtpassthrough variable is a generic option available for advanced use. It can only be a string type.
        :return: SAS Result Object
        """