class TestDataIntegrity:
    main_nodes = []

    def test_da_identify_retrieve_missing_columns(self):
        for node in self.main_nodes:
            print(node)

    def test_da_sampling_determines_data_presence(self):
        for node in self.main_nodes:
            print(node)

        # Disperse data
        # Get data from range
        # Compare