fix: override materialization python models (#8538)

.changes/unreleased/Fixes-20241002-142638.yaml

@@ -0,0 +1,6 @@
+kind: Fixes
+body: ' override materialization python models'
+time: 2024-10-02T14:26:38.332191458-03:00
+custom:
+    Author: devmessias
+    Issue: "8520"

core/dbt/parser/base.py

@@ -222,7 +222,6 @@ def _create_parsetime_node(
             name = block.name
         if block.path.relative_path.endswith(".py"):
             language = ModelLanguage.python
-            config.add_config_call({"materialized": "table"})
         else:
             # this is not ideal but we have a lot of tests to adjust if don't do it
             language = ModelLanguage.sql
@@ -322,6 +321,15 @@ def update_parsed_node_config(
         # build_config_dict takes the config_call_dict in the ContextConfig object
         # and calls calculate_node_config to combine dbt_project configs and
         # config calls from SQL files, plus patch configs (from schema files)
+        # This normalize the config for a model node due #8520; should be improved latter
+        if not patch_config_dict:
+            patch_config_dict = {}
+        if (
+            parsed_node.resource_type == NodeType.Model
+            and parsed_node.language == ModelLanguage.python
+        ):
+            if "materialized" not in patch_config_dict:
+                patch_config_dict["materialized"] = "table"
         config_dict = config.build_config_dict(patch_config_dict=patch_config_dict)
 
         # Set tags on node provided in config blocks. Tags are additive, so even if

tests/unit/parser/test_parser.py

@@ -1005,7 +1005,7 @@ def model(dbt, session):
 import pandas as pd
 
 def model(dbt, session):
-    dbt.config(materialized="view")
+    dbt.config(materialized="incremental")
     return pd.dataframe([1, 2])
 """
 
@@ -1200,7 +1200,7 @@ def test_python_model_custom_materialization(self):
         self.parser.manifest.files[block.file.file_id] = block.file
         self.parser.parse_file(block)
         node = list(self.parser.manifest.nodes.values())[0]
-        self.assertEqual(node.get_materialization(), "view")
+        self.assertEqual(node.get_materialization(), "incremental")
 
 
 class StaticModelParserTest(BaseParserTest):