Resolved linting errors

Author: ashish-m134

Dockerfile

@@ -1,4 +1,4 @@
-FROM databricksruntime/python:15.4-LTS 
+FROM databricksruntime/python:15.4-LTS
 
 ARG PROJECT_DIR=/project
 
@@ -7,4 +7,4 @@ RUN pip install uv==0.4.20
 WORKDIR ${PROJECT_DIR}
 COPY dist/wine_quality-0.0.1-py3-none-any.whl ${PROJECT_DIR}/
 
-RUN uv pip install --python /databricks/python3 ${PROJECT_DIR}/wine_quality-0.0.1-py3-none-any.whl
+RUN uv pip install --python /databricks/python3 ${PROJECT_DIR}/wine_quality-0.0.1-py3-none-any.whl

notebooks/week3/01. feature_serving.py

@@ -32,6 +32,7 @@
     OnlineTableSpecTriggeredSchedulingPolicy,
 )
 from databricks.sdk.service.serving import EndpointCoreConfigInput, ServedEntityInput
+from pyspark.dbutils import DBUtils
 from pyspark.sql import SparkSession
 
 from wine_quality.config import ProjectConfig
@@ -40,11 +41,12 @@
 
 # MAGIC %md
 # MAGIC ## Deploy and query a feature serving endpoint
-https://docs.databricks.com/en/machine-learning/feature-store/feature-serving-tutorial.html
+# MAGIC https://docs.databricks.com/en/machine-learning/feature-store/feature-serving-tutorial.html
 
 # COMMAND ----------
 
 spark = SparkSession.builder.getOrCreate()
+dbutils = DBUtils(spark)
 
 # Initialize Databricks clients
 workspace = WorkspaceClient()
@@ -122,14 +124,14 @@
     perform_full_copy=False,
 )
 
-#Create the online table in Databricks
+# Create the online table in Databricks
 try:
     online_table_pipeline = workspace.online_tables.create(name=online_table_name, spec=spec)
 except Exception as e:
- if "already exists" in str(e):
-   pass
- else:
-   raise e
+    if "already exists" in str(e):
+        pass
+    else:
+        raise e
 
 online_table_pipeline = workspace.online_tables.get(name=online_table_name)
 
@@ -139,7 +141,9 @@
 # Define features to look up from the feature table
 features = [
     FeatureLookup(
-        table_name=feature_table_name, lookup_key="id", feature_names=[ "volatile_acidity", "alcohol", "sulphates", "quality"]
+        table_name=feature_table_name,
+        lookup_key="id",
+        feature_names=["volatile_acidity", "alcohol", "sulphates", "quality"],
     )
 ]
 
@@ -175,7 +179,7 @@
             served_entities=[
                 ServedEntityInput(
                     entity_name=feature_spec_name,  # feature spec name defined in the previous step
-                    scale_to_zero_enabled=True, # Cost saving mechanism where the endpoint scales down to zero when not in use
+                    scale_to_zero_enabled=True,  # Cost saving mechanism where the endpoint scales down to zero when not in use
                     workload_size="Small",  # Define the workload size (Small, Medium, Large)
                 )
             ]
@@ -248,6 +252,7 @@
 headers = {"Authorization": f"Bearer {token}"}
 num_requests = 10
 
+
 # COMMAND ----------
 # Function to make a request and record latency
 def send_request():
@@ -261,6 +266,8 @@ def send_request():
     end_time = time.time()
     latency = end_time - start_time  # Calculate latency for this request
     return response.status_code, latency
+
+
 # COMMAND ----------
 
 # Measure total execution time
@@ -282,4 +289,4 @@ def send_request():
 average_latency = sum(latencies) / len(latencies)
 
 print("\nTotal execution time:", total_execution_time, "seconds")
-print("Average latency per request:", average_latency, "seconds") 
+print("Average latency per request:", average_latency, "seconds")

notebooks/week3/02.model_serving.py

@@ -6,25 +6,24 @@
 
 # COMMAND ----------
 
+import random
 import time
-
-import requests
-import random 
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
+import requests
 from databricks.sdk import WorkspaceClient
 from databricks.sdk.service.serving import (
     EndpointCoreConfigInput,
     ServedEntityInput,
-    TrafficConfig,
-    Route,
 )
+from pyspark.dbutils import DBUtils
+from pyspark.sql import SparkSession
 
 from wine_quality.config import ProjectConfig
-from pyspark.sql import SparkSession
 
 workspace = WorkspaceClient()
 spark = SparkSession.builder.getOrCreate()
+dbutils = DBUtils(spark)
 
 config = ProjectConfig.from_yaml(config_path="../../project_config.yml")
 
@@ -45,13 +44,13 @@
                     entity_version=3,
                 )
             ],
-        # # Optional if only 1 entity is served
-        # traffic_config=TrafficConfig(
-        #     routes=[
-        #         Route(served_model_name="wine_quality_model-3",
-        #               traffic_percentage=100)
-        #     ]
-        #     ),
+            # # Optional if only 1 entity is served
+            # traffic_config=TrafficConfig(
+            #     routes=[
+            #         Route(served_model_name="wine_quality_model-3",
+            #               traffic_percentage=100)
+            #     ]
+            #     ),
         ),
     )
 except Exception as e:
@@ -88,7 +87,7 @@
     "density",
     "pH",
     "sulphates",
-    "alcohol"
+    "alcohol",
 ]
 
 sampled_records = train_set[required_columns].sample(n=1000, replace=True).to_dict(orient="records")
@@ -118,9 +117,7 @@
 # COMMAND ----------
 start_time = time.time()
 
-model_serving_endpoint = (
-    f"https://{host}/serving-endpoints/wine-quality-model-serving/invocations"
-)
+model_serving_endpoint = f"https://{host}/serving-endpoints/wine-quality-model-serving/invocations"
 response = requests.post(
     f"{model_serving_endpoint}",
     headers={"Authorization": f"Bearer {token}"},
@@ -142,9 +139,7 @@
 # COMMAND ----------
 
 # Initialize variables
-model_serving_endpoint = (
-    f"https://{host}/serving-endpoints/wine-quality-model-serving/invocations"
-)
+model_serving_endpoint = f"https://{host}/serving-endpoints/wine-quality-model-serving/invocations"
 
 headers = {"Authorization": f"Bearer {token}"}
 num_requests = 1000
@@ -182,4 +177,4 @@ def send_request():
 average_latency = sum(latencies) / len(latencies)
 
 print("\nTotal execution time:", total_execution_time, "seconds")
-print("Average latency per request:", average_latency, "seconds")
+print("Average latency per request:", average_latency, "seconds")

notebooks/week3/03.model_serving_feature_lookup.py

@@ -21,11 +21,13 @@
     OnlineTableSpecTriggeredSchedulingPolicy,
 )
 from databricks.sdk.service.serving import EndpointCoreConfigInput, ServedEntityInput
+from pyspark.dbutils import DBUtils
 from pyspark.sql import SparkSession
 
 from wine_quality.config import ProjectConfig
 
 spark = SparkSession.builder.getOrCreate()
+dbutils = DBUtils(spark)
 
 # Initialize Databricks clients
 workspace = WorkspaceClient()
@@ -47,14 +49,14 @@
     perform_full_copy=False,
 )
 
-#Create the online table in Databricks
+# Create the online table in Databricks
 try:
     online_table_pipeline = workspace.online_tables.create(name=online_table_name, spec=spec)
 except Exception as e:
- if "already exists" in str(e):
-   pass
- else:
-   raise e
+    if "already exists" in str(e):
+        pass
+    else:
+        raise e
 
 # COMMAND ----------
 
@@ -127,7 +129,7 @@
 
 # COMMAND ----------
 
-train_set.dtypes
+train_set_dtypes = train_set.dtypes
 
 # COMMAND ----------
 
@@ -157,4 +159,4 @@
 
 # COMMAND ----------
 
-wine_features.dtypes
+wine_features_dtypes = wine_features.dtypes

notebooks/week3/04.AB_test_model_serving.py

@@ -5,24 +5,24 @@
 # MAGIC %restart_python
 
 # COMMAND ----------
+import hashlib
 import time
 
 import mlflow
 import pandas as pd
+import requests
 from databricks.sdk import WorkspaceClient
 from databricks.sdk.service.serving import EndpointCoreConfigInput, ServedEntityInput
 from lightgbm import LGBMRegressor
 from mlflow import MlflowClient
 from mlflow.models import infer_signature
+from pyspark.dbutils import DBUtils
 from pyspark.sql import SparkSession
 from sklearn.compose import ColumnTransformer
 from sklearn.impute import SimpleImputer
 from sklearn.metrics import mean_absolute_error, mean_squared_error, r2_score
 from sklearn.pipeline import Pipeline
-from sklearn.preprocessing import OneHotEncoder
 from sklearn.preprocessing import StandardScaler
-import hashlib
-import requests
 
 from wine_quality.config import ProjectConfig
 
@@ -58,6 +58,10 @@
     "max_depth": ab_test_params["max_depth_b"],
 }
 
+# COMMAND ----------
+spark = SparkSession.builder.getOrCreate()
+dbutils = DBUtils(spark)
+
 # COMMAND ----------
 
 # MAGIC %md
@@ -108,7 +112,7 @@
 
     # Train the model
     pipeline.fit(X_train, y_train)
-    y_pred = pipeline.predict(X_test) 
+    y_pred = pipeline.predict(X_test)
 
     # Calculate performance metrics
     mse = mean_squared_error(y_test, y_pred)
@@ -124,9 +128,7 @@
     signature = infer_signature(model_input=X_train, model_output=y_pred)
 
     # Log the input dataset for tracking reproducibility
-    dataset = mlflow.data.from_spark(train_set_spark,
-                                     table_name=f"{catalog_name}.{schema_name}.train_set",
-                                     version="0")
+    dataset = mlflow.data.from_spark(train_set_spark, table_name=f"{catalog_name}.{schema_name}.train_set", version="0")
     mlflow.log_input(dataset, context="training")
 
     # Log the pipeline model in MLflow with a unique artifact path
@@ -178,8 +180,7 @@
     mlflow.log_metric("r2_score", r2)
     signature = infer_signature(model_input=X_train, model_output=y_pred)
 
-    dataset = mlflow.data.from_spark(train_set_spark,
-                                     table_name=f"{catalog_name}.{schema_name}.train_set", version="0")
+    dataset = mlflow.data.from_spark(train_set_spark, table_name=f"{catalog_name}.{schema_name}.train_set", version="0")
     mlflow.log_input(dataset, context="training")
     mlflow.sklearn.log_model(sk_model=pipeline, artifact_path="lightgbm-pipeline-model", signature=signature)
 
@@ -233,16 +234,14 @@ def predict(self, context, model_input):
 
 # COMMAND ----------
 X_train = train_set[num_features + ["id"]]
-X_test = test_set[num_features  + ["id"]]
+X_test = test_set[num_features + ["id"]]
 
 
 # COMMAND ----------
 models = [model_A, model_B]
 wrapped_model = WineQualityModelWrapper(models)  # we pass the loaded models to the wrapper
 example_input = X_test.iloc[0:1]  # Select the first row for prediction as example
-example_prediction = wrapped_model.predict(
-    context=None,
-    model_input=example_input)
+example_prediction = wrapped_model.predict(context=None, model_input=example_input)
 print("Example Prediction:", example_prediction)
 
 # COMMAND ----------
@@ -251,22 +250,16 @@ def predict(self, context, model_input):
 
 with mlflow.start_run() as run:
     run_id = run.info.run_id
-    signature = infer_signature(model_input=X_train,
-                                model_output={"Prediction": 1234.5,
-                                              "model": "Model B"})
-    dataset = mlflow.data.from_spark(train_set_spark,
-                                     table_name=f"{catalog_name}.{schema_name}.train_set",
-                                     version="0")
+    signature = infer_signature(model_input=X_train, model_output={"Prediction": 1234.5, "model": "Model B"})
+    dataset = mlflow.data.from_spark(train_set_spark, table_name=f"{catalog_name}.{schema_name}.train_set", version="0")
     mlflow.log_input(dataset, context="training")
     mlflow.pyfunc.log_model(
-        python_model=wrapped_model,# passing wrapped model here instead sklearn model
+        python_model=wrapped_model,  # passing wrapped model here instead sklearn model
         artifact_path="pyfunc-wine-quality-model-ab",
-        signature=signature
+        signature=signature,
     )
 model_version = mlflow.register_model(
-    model_uri=f"runs:/{run_id}/pyfunc-wine-quality-model-ab",
-    name=model_name,
-    tags={"git_sha": f"{git_sha}"}
+    model_uri=f"runs:/{run_id}/pyfunc-wine-quality-model-ab", name=model_name, tags={"git_sha": f"{git_sha}"}
 )
 
 # COMMAND ----------
@@ -276,7 +269,7 @@ def predict(self, context, model_input):
 predictions = model.predict(X_test.iloc[0:1])
 
 # Display predictions
-predictions
+# predictions
 
 # COMMAND ----------
 
@@ -313,7 +306,6 @@ def predict(self, context, model_input):
 # MAGIC ### Call the endpoint
 
 # COMMAND ----------
-
 token = dbutils.notebook.entry_point.getDbutils().notebook().getContext().apiToken().get()
 host = spark.conf.get("spark.databricks.workspaceUrl")
 
@@ -342,9 +334,7 @@ def predict(self, context, model_input):
 
 start_time = time.time()
 
-model_serving_endpoint = (
-    f"https://{host}/serving-endpoints/wine-quality-model-serving-ab-test/invocations"
-)
+model_serving_endpoint = f"https://{host}/serving-endpoints/wine-quality-model-serving-ab-test/invocations"
 
 response = requests.post(
     f"{model_serving_endpoint}",