diff --git a/.gitignore b/.gitignore
index b6e4761..58d8b5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -127,3 +127,7 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+*.csv
+*.jar
+*.wget-hsts
diff --git a/pyspark/ml_air.py b/pyspark/ml_air.py
index 437018a..5bbfa29 100644
--- a/pyspark/ml_air.py
+++ b/pyspark/ml_air.py
@@ -9,7 +9,12 @@
 
 
 # create spark session
-spark = SparkSession.builder.master('local[4]').appName('AirQuality').getOrCreate()
+spark = (
+    SparkSession.builder
+    .master('local[4]')
+    .appName('AirQuality')
+    .getOrCreate()
+)
 spark # open Spark Web UI to monitor jobs/stages/storage/env/executors/SQL
 
 # configure and start spark history server (app log)