How to use the pyreadstat.read_xport function in pyreadstat

def test_xport_metaonly(self):

        df, meta = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"))
        df2, meta2 = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"), metadataonly=True)
        self.assertTrue(df2.empty)
        self.assertTrue(meta.number_columns == meta2.number_columns)
        self.assertTrue(meta2.number_rows is None)
        self.assertTrue(meta.column_names == meta2.column_names)
        self.assertTrue(meta.column_labels == meta2.column_labels)

def test_xport_metaonly(self):

        df, meta = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"))
        df2, meta2 = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"), metadataonly=True)
        self.assertTrue(df2.empty)
        self.assertTrue(meta.number_columns == meta2.number_columns)
        self.assertTrue(meta2.number_rows is None)
        self.assertTrue(meta.column_names == meta2.column_names)
        self.assertTrue(meta.column_labels == meta2.column_labels)

def test_xport_nodates(self):
        df, meta = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"), disable_datetime_conversion=True)
        df.columns = [x.lower() for x in df.columns]
        self.assertTrue(df.equals(self.df_nodates_sastata))

def test_xport_write_dates(self):

        #if sys.version_info[0] < 3:
        #    return

        path = os.path.join(self.write_folder, "dates_write.xpt")
        pyreadstat.write_xport(self.df_sas_dates, path)
        df, meta = pyreadstat.read_xport(path)
        self.assertTrue(df.equals(self.df_sas_dates))

def test_xport_write_basic(self):

        file_label = "basic write"
        table_name = "TEST"
        col_labels = ["mychar label","mynum label", "mydate label", "dtime label", None, "myord label", "mytime label"]
        path = os.path.join(self.write_folder, "write.xpt")
        pyreadstat.write_xport(self.df_pandas, path, file_label=file_label, column_labels=col_labels, table_name=table_name)
        df, meta = pyreadstat.read_xport(path)
        df.columns = [x.lower() for x in df.columns]

        self.assertTrue(df.equals(self.df_pandas))
        self.assertEqual(meta.file_label, file_label)
        self.assertListEqual(meta.column_labels, col_labels)
        self.assertEqual(table_name, meta.table_name)

def test_xport(self):

        df, meta = pyreadstat.read_xport(os.path.join(self.basic_data_folder, "sample.xpt"))
        df.columns = [x.lower() for x in df.columns]
        self.assertTrue(df.equals(self.df_pandas))
        self.assertTrue(meta.number_columns == len(self.df_pandas.columns))
        self.assertTrue(meta.number_rows == len(self.df_pandas))